Donald Lowe
Max Steineke Professor in Earth Sciences, Emeritus
Earth & Planetary Sciences
Bio
Don Lowe was born and raised in Sacramento, California, and attended Stanford University for his undergraduate study. In his sophomore year, he chanced to take a class in physical geology from Ben Page, which set the course of his future professional career. He decided to go back "east" for his graduate study and enrolled in geology at the University of Illinois, where he received a PhD degree in 1967. He subsequently was awarded a post-doctoral associate position at the US Geological Survey (1968-70) and started his first academic position as an Assistant Professor at Louisiana State University in 1970. He returned to Stanford in 1988 as a Professor and has continued his education, teaching, and research there since then. His research falls into two broad areas: deep-water sedimentation and Archean sedimentary systems. In the former, he examines the processes of sediment transport and deposition in the deep-sea, resulting lithofacies and lithofacies associations, stacking and facies pattern as reflecting environments of deposition, and overall basin history. The Archean research focuses on rocks older than 3.0 billion-years-old and aims to use sedimentary principles to investigate early surface environments, the nature and role of early organisms, the role of giant meteorite impacts in early crustal development, and Archean basinal settings and tectonics.
Administrative Appointments
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Professor of Geological & Environmental Sciences, Stanford University (1993 - Present)
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Professor of Geology, Stanford University (1988 - 1993)
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Consulting Professor, Department of Earth and Space Sciences, University of California at Los Angeles (1988 - 1988)
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Acting Chairman, Department of Geology, Louisiana State University, Baton Rouge, Louisiana (1982 - 1983)
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Visiting Lecturer, Department of Geology, Carleton University, Ottawa, Ontario, Canada (1981 - 1981)
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Visiting Professor, Department of Geology, University of Ottawa, Ottawa, Ontario, Canada (1980 - 1981)
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Professor, Department of Geology, Louisiana State University, Baton Rouge, Louisiana (1978 - 1988)
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Associate Professor, Department of Geology, Louisiana State University, Baton Rouge, Louisiana (1973 - 1978)
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Assistant Professor, Department of Geology, Louisiana State University, Baton Rouge, Louisiana (1970 - 1973)
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Post-doctoral Research Associate, U.S. Geological Survey, Menlo Park, California (1968 - 1970)
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Instructor in Geology, University of Illinois (1967 - 1968)
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Visiting Graduate Fellow, Sedimentary Research Laboratory University of Reading, Reading, England (1966 - 1967)
Honors & Awards
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Twenhofel Medal, Society of Sedimentary Geology (SEPM) (2018)
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2016 Alumni Achievement Award, University of Illinois, Department of Geology (2016)
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Fellow, Geological Society of America (2016)
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Grover E. Murray Memorial Distinguished Educator Award, American Association of Petroleum Geologists (2014)
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Honorary Membership, Pacific Section, Society for Sedimentary Geology, SEPM (2012)
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Max Steineke Professor, Stanford University (2012)
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Research Fellowship, Japan Society for the Promotion of Science (1994)
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Post-Doctoral Fellowship, U.S. Geological Survey (1968-1970)
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Graduate Fellowship, National Science Foundation (1964-1967)
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Phi Beta Kappa, Sigma Xi (1964)
Boards, Advisory Committees, Professional Organizations
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Member, Editorial Board, Precambrian Research (1990 - Present)
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Co-Director, Stanford Project on Deep-Water Depositional Systems (SPODDS) (1993 - Present)
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Member, Interschool Faculty Committee for the Goldman Environmental Honors Program, Stanford University (1993 - 1998)
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Member, GSA Committee on the Penrose Medal Award (1995 - 1997)
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Member, Grant Proposal Review Panel, NASA Exobiology Program (1995 - 1998)
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Invited Scientist, Kyushu University, Collaborative Studies of Japanese Siliceous Sinter (1997 - 1997)
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Invited Lecturer, BP Petroleum (Houston) and Texaco (UK) (1997 - 1997)
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Invited Participant, SEPM Debate at Annual AAPG-SEPM Meeting: Processes of Deep-water Clastic Sedimentation and Their Reservoir Implications: What Can We PredictNULL (1997 - 1997)
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Qualline Lecturer (a series of 3 lectures), Department of Geological Sciences, University of Texas at Austin (1997 - 1997)
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Member, Soil Scientist Search Committee, Stanford University (1997 - 1998)
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Member, Penn State Astrobiology Research Consortium (1998 - 2009)
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Member, GSA Committee on Honorary Fellows (1998 - 2000)
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Field Trip Leader, Unocal, Deep-water Systems in Western California (1998 - 1998)
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Invited Lecturer, San Joaquin Geological Society, Bakersfield, CA (1998 - 1998)
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Invited Participant and Speaker, Statoil Research Summit, Processes, Stratigraphy, and Lithology Distribution in Deep-water Clastic Systems-An Update, Trondheim and Stavanger, Norway (1998 - 1998)
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Invited Lecturer, University of Chicago, Chicago, Ill. (1998 - 1998)
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Leader, Science Definition Team, NASA Astrobiology Research Laboratory (1999 - 2000)
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Member, NASA Ames Space Science Review Panel (1999 - 1999)
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Member, advisory panel,, Calif. Acad. Sci., major new directions for CAS programs over the next 10-15 years (1999 - 1999)
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Member, advisory group, NASA/Ames Astrobiology Program, objectives and goals of new Astrobiology laboratory at NASA/Ames Research Center (1999 - 1999)
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Invited Lecturer, Conference on North Sea Petroleum province (1999 - 1999)
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Member, NRC/NSF/GSA panel to consider future research directions and initiatives in sedimentary geology (1999 - 1999)
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Earth Sciences representative on Walk Through Time committee, Stanford University (1999 - 1999)
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Stanford Office of Technology and Licensing Grants Committee, Stanford University (1999 - 2000)
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Member, Editorial Board, Astrobiology (2000 - 2005)
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Member, UCLA Center for Astrobiology (2000 - 2009)
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Invited Speaker, Barberton Geological Society, South Africa (2000 - 2000)
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Invited Speaker, Triton Energy, Dallas, Texas (2000 - 2000)
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Invited Speaker, Louisiana State University (2000 - 2000)
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Invited Speaker, UCLA (2000 - 2000)
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Invited Speaker, Petrobras Conference on Deep-water Sedimentation, Rio de Janeiro, Brazil (2000 - 2000)
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Member, SETI Advisory Committee on long-range planning for new program on Life in the Universe (2000 - 2002)
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Organizer and Leader, AAPG Hedberg Field Research Conference, Deep-water Sandstones, Submarine Canyon to Basin Plain, Western California, April 9-14 (2000 - 2000)
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Chair, GES Long Range Planning Committee, Stanford University (2000 - 2004)
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Member, GES Admissions Committee, Stanford University (2000 - 2001)
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Invited Speaker, SEPM Diamond Jubilee Symposium, Denver, CO; Peninsula Geological Society; University of California, Davis, CA; US Geological Survey, Menlo Park, CA (2001 - 2001)
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Chair, GES Undergraduate Program Committee, Stanford University (2001 - 2002)
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Member, Impacts Focus Group, NASA Astrobiology Institute (2002 - 2006)
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Invited Speaker, UCLA Rubey Symposium, Impacts and the origin, Evolution, and Extinction of Life (2002 - 2002)
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Invited Speaker, Barberton Geological Society, South Africa; Rohol Aussuchungs Gesellschaft, Vienna, Austria; Osterreichische Geologische Gesellschaft (Austrian Geological Society), Vienna; UCLA Department of Earth and Planetary Sciences (2002 - 2002)
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GES Course designer (4 planetary science courses), NASA/Ames Research Center and USGS (2002 - 2004)
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Organizer and leader of 10-day field conference, Archean Surface Processes, in the Barberton Greenstone Belt, South Africa ( 29 international participants) (2003 - 2003)
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Member, GES Faculty Search Committee (Surface Processes), Stanford University (2003 - 2004)
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Member, School of Earth Sciences Subcommittee on Core disciplines, Stanford University (2003 - 2004)
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Chair, Promotion and Tenure Committee, Stanford University (2003 - 2003)
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Sabbatical leave, Stanford University (2004 - 2005)
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Invited Speaker, Barberton Geological Society; Goldschmidt Conference, Copenhagen, Denmark (2004 - 2004)
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Invited Lecturer, G. Derwood Baker Distinguished Lecture Series, Avenidas, Palo Alto, CA (2004 - 2004)
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Member, NASA 2009 MSL mission team (2004 - 2005)
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Member, Editorial Board, Astrobiology (2005 - Present)
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Invited Speaker, Barberton Geological Society, South Africa; UCLA Department of Earth & Planetary Sciences, Institute of Geophysics and Planetary Physics; Shirley A. Kliegal Lecture in Geology, California Institute of Technology (2005 - 2005)
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Co-Chair, Symposium on Deep-Water Sedimentation, Annual Meeting of GSA Cordilleran Section, San Jose, CA (2005 - 2005)
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Member, Subcommission on Subdivision and Calibration of the Precambrian Time Scale , International Commission on Stratigraphy (2005 - 2008)
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Co-Chair, GES Faculty Search Committee (Paleobiology), Stanford University (2005 - 2005)
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Co-Leader (w/Graham), AAPG Field Seminar: Deep-Water Siliciclastic Reservoirs (2006 - 2006)
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Invited Speaker, University of Southern California, Los Angeles, CA (2006 - 2006)
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Chair, Undergraduate Curriculum Committee in Geological Sciences, Stanford University (2006 - 2007)
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Invited Keynote Speaker, Biosignatures in Ancient Rocks Workshop, Sudbury, Ontario (2007 - 2007)
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Invited Speaker/Participant, Core Workshop: Deep-Water Reservoirs of California: AAPG (2007 - 2007)
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Chair, GES Long Range Planning Committee 2, Stanford University (2007 - 2009)
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Associate Chair, GES, Stanford University (2007 - Present)
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Member, GES Graduate Admissions Committee, Stanford University (2007 - 2008)
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Invited Speaker, Deepwater Sediments, RAG (petroleum company, Vienna, Austria) and Reliance Industries (India) (2008 - 2008)
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Co-Leader, Pacific Section of AAPG Field Trip, Deepwater Sediments in Central California (2008 - 2008)
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Invited Speaker, Committee on the Origins and Evolution of Life (COEL) of the National Academies of Sciences, Washington, DC. (2008 - 2008)
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Invited Speaker, Geological Society of Vienna (2008 - 2008)
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Invited Speaker, CSU-Channel Islands, Symposium, "Early Life on the Ancient Earth and Mars" (2008 - 2008)
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Chair, GES Graduate Admissions Committee, Stanford University (2008 - 2012)
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Member, GES Space Committee, Stanford University (2008 - 2009)
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Member, University Committee on Health and Safety, Stanford University (2009 - 2011)
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Invited Speaker, Hess Forum on Thin-Bedded Sediments (2009 - 2009)
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Member, Promotion and Tenure Committee, Stanford University (2011 - 2011)
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Chair, Promotion and Tenure Committee, Stanford University (2011 - 2011)
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Leader and Organizer, Stanford-KFUPM Field Trip to Death Valley (2012 - 2012)
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Keynote Speaker, International Geological Congress, Brisbane, Symposium on Large Asteroid Impacts and Crustal Evolution (2012 - 2012)
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Leader and Organizer, Stanford-KFUPM Field Course to El Paso area and Guadalupe Mtns. (2014 - 2014)
Professional Education
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Ph.D., University of Illinois, Geology (1967)
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B.S., Stanford University, Geology (1964)
Current Research and Scholarly Interests
Research
I enjoy the historical aspects of geology, looking back in time to explore past events and ancient life. My research and that of my students is focused in two main areas. We use the techniques of sedimentary geology and geochemistry to explore the Earth's earliest surface environments, life, and crustal development, generally before 2.5 billion years ago. Much of this research is focused in South Africa and Western Australia. The other half of my research deals with deep-water sedimentation, especially using outcrops and cores to study the processes by which coarse sediment is transported and deposited in the deep sea.
Teaching
My teaching is focused on topics in sedimentary geology and techniques for interpreting the sedimentary record. This includes an undergraduate/graduate course (co-taught with Professor Steve Graham) in sedimentary geology and depositional systems, and graduate courses in sedimentation mechanics, sedimentary petrography, and sedimentary environments.
Professional Activities
I engage in a variety of activities in support of sedimentary geology, especially deep-water sedimentation and Archean sedimentology. I am currently Chair of the SEPM Committeee for the Arnold Bouma Conferences on Deep-Water Geoscience and a member of the Subcommission on Precambrian Stratigraphy of the International Commission on Stratigraphy. I have recently stepped down after 27 years as co-director of the Stanford Project On Deep-water Depositional Systems (SPODDS) and have served on numerous school and departmental committees, especially those aimed at setting goals and directions for long-range planning and graduate admissions, and on the editorial boards of a number of professional journals and on numerous program, grant, and fellowship review panels.
Projects
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Sedimentology, Palaeoenvironment and Diagenesis of the Tertiary Burqan Formation in the Midyan area, Saudi Arabia: Implications for subsurface reservoir quality., King Fahd University of Petroleum and Minerals (KFUMP), Saudi Arabia
The project involves a group of 5 professional geologists aimed at studying the sedimentation, diagenesis, and reservoir architecture and quality of syn-rift Miocene deep-water strata in the Midyan area, northwestern Saudi Arabia.
Location
Saudi Arabia
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Investigating the Origin of Layered Outcrops in the Mawrth Vallis Region, Mars, Stanford
The project, which involves investigators from the SETI Institute and Stanford, is studying the origin of clays in the Mawrth Vallis region of Mars
Location
Mars
2024-25 Courses
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Independent Studies (6)
- Advanced Projects
EPS 399 (Win, Spr) - Field Research
EPS 299 (Spr) - Graduate Research
EPS 400 (Spr) - Graduate Teaching Experience in Geological Sciences
EPS 386 (Win, Spr) - Practical Experience in the Geosciences
EPS 385 (Win, Spr) - Teaching in Geological Sciences
EPS 398 (Win, Spr)
- Advanced Projects
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Prior Year Courses
2023-24 Courses
- Topics in Sedimentary Geology
EPS 213 (Aut)
2021-22 Courses
- Deciphering Depositional Environments in the Pre-Vegetation Rock Record
GEOLSCI 249 (Aut) - Introduction to Depositional Systems
GEOLSCI 258 (Aut) - Sediments: The Book of Earth's History
GEOLSCI 106 (Win)
- Topics in Sedimentary Geology
All Publications
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Onverwacht Group, Barberton Greenstone Belt, South Africa: 300 m.y. development of a Paleoarchean stagnant lid
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
2024
View details for DOI 10.1130/B37573.1
View details for Web of Science ID 001262539200001
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Ratification of the base of the ICS Geological Time Scale: the Global Standard Stratigraphic Age (GSSA) for the Hadean lower boundary
EPISODES
2024; 47 (2): 381-389
View details for DOI 10.18814/epiiugs/2024/024002
View details for Web of Science ID 001306503200001
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Geology of the Eastern Barberton Greenstone Belt, South Africa: Early Deformation and the Role of Large Meteor Impacts
AMERICAN JOURNAL OF SCIENCE
2024; 324
View details for DOI 10.2475/001c.122938
View details for Web of Science ID 001316791900001
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Spatial distribution and variability of lobe facies in a large sand-rich submarine fan system: Neoproterozoic Zerrissene Group, Namibia
SEDIMENTOLOGY
2023
View details for DOI 10.1111/sed.13129
View details for Web of Science ID 001081227200001
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Origin of Silicate Spherules and Geochemistry of Re and Platinum-Group Elements Within Microfossil-Bearing Archean Chert from the 3.4 Ga Strelley Pool Formation, Western Australia.
Astrobiology
2023; 23 (6): 670-690
Abstract
Silicate spherules have been identified from the ca. 3.4 Ga-old Strelley Pool Formation (SPF) in the Pilbara Craton, Western Australia. Their origins and geochemical characteristics, including the Re and platinum-group elements of their host clastic layer and the overlying and underlying microfossil-bearing finely laminated carbonaceous cherts, were examined. The spherules have various morphologies (completely spherical to angular), sizes (∼20 to >500 μm), textures (layered, non-layered, and fibrous), mineralogy (various proportions of microcrystalline quartz, sericite, anatase and Fe-oxides), and chemistry (enriched in Ni and/or Cr), commonly with thin anatase-rich walls. Their host clastic layer is characterized by rip-up clasts, suggesting a suddenly occurring high-energy depositional environment, such as tsunamis. Although various origins other than asteroid impact were considered, none could unequivocally explain the features of the spherules. In contrast, non-layered spherical spherules that occur as individual framework grains or collectively comprise angular-shaped rock fragments appear to be more consistent with the asteroid impact origin. The calculated Re-Os age of the cherts (3331 ± 220 Ma) was consistent with the established age of the SPF (3426-3350 Ma), suggesting that the Re-Os system was not significantly disturbed by later metamorphic and weathering events.
View details for DOI 10.1089/ast.2021.0155
View details for PubMedID 37229534
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Progressive accretion recorded in sedimentary rocks of the 3.28-3.23 Ga Fig Tree Group, Barberton Greenstone Belt
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
2022; 134 (5-6): 1258-1276
View details for DOI 10.1130/B35973.1
View details for Web of Science ID 000797134500004
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Destabilization of Long-Lived Hadean Protocrust and the Onset of Pervasive Hydrous Melting at 3.8 Ga
AGU ADVANCES
2022; 3 (2)
View details for DOI 10.1029/2021AV000520
View details for Web of Science ID 000784685600001
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Mars as a time machine to Precambrian Earth
Journal of the Geological Society
2022
View details for DOI 10.1144/jgs2022-047
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Paleomagnetism of 3.5-4.0 Ga zircons from the Barberton Greenstone Belt, South Africa
EARTH AND PLANETARY SCIENCE LETTERS
2021; 567
View details for DOI 10.1016/j.epsl.2021.116999
View details for Web of Science ID 000659467000013
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Windblown Hadean zircons derived by erosion of impact-generated 3.3 Ga uplifts, Barberton Greenstone Belt, South Africa
PRECAMBRIAN RESEARCH
2021; 356
View details for DOI 10.1016/j.precamres.2021.106111
View details for Web of Science ID 000652090300006
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Provenance and paleogeography of Archean Fig Tree siliciclastic rocks in the East-Central Barberton Greenstone Belt, South Africa
PRECAMBRIAN RESEARCH
2021; 354
View details for DOI 10.1016/j.precamres.2020.106041
View details for Web of Science ID 000615712000005
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Heterogeneous Hadean crust with ambient mantle affinity recorded in detrital zircons of the Green Sandstone Bed, South Africa.
Proceedings of the National Academy of Sciences of the United States of America
2021; 118 (8)
Abstract
The nature of Earth's earliest crust and the processes by which it formed remain major issues in Precambrian geology. Due to the absence of a rock record older than ∼4.02 Ga, the only direct record of the Hadean is from rare detrital zircon and that largely from a single area: the Jack Hills and Mount Narryer region of Western Australia. Here, we report on the geochemistry of Hadean detrital zircons as old as 4.15 Ga from the newly discovered Green Sandstone Bed in the Barberton greenstone belt, South Africa. We demonstrate that the U-Nb-Sc-Yb systematics of the majority of these Hadean zircons show a mantle affinity as seen in zircon from modern plume-type mantle environments and do not resemble zircon from modern continental or oceanic arcs. The zircon trace element compositions furthermore suggest magma compositions ranging from higher temperature, primitive to lower temperature, and more evolved tonalite-trondhjemite-granodiorite (TTG)-like magmas that experienced some reworking of hydrated crust. We propose that the Hadean parental magmas of the Green Sandstone Bed zircons formed from remelting of mafic, mantle-derived crust that experienced some hydrous input during melting but not from the processes seen in modern arc magmatism.
View details for DOI 10.1073/pnas.2004370118
View details for PubMedID 33602806
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CONSTRAINTS ON SURFACE TEMPERATURE 3.4 BILLION YEARS AGO BASED ON TRIPLE OXYGEN ISOTOPES OF CHERTS FROM THE BARBERTON GREENSTONE BELT, SOUTH AFRICA, AND THE PROBLEM OF SAMPLE SELECTION
AMERICAN JOURNAL OF SCIENCE
2020; 320 (9): 790–814
View details for DOI 10.2475/11.2020.02
View details for Web of Science ID 000607814800002
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The non-glacial and non-cratonic origin of an early Archean felsic volcaniclastic unit, Barberton Greenstone Belt, South Africa
PRECAMBRIAN RESEARCH
2020; 341
View details for DOI 10.1016/j.precamres.2020.105647
View details for Web of Science ID 000528207600009
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Deposition of >3.7 Ga clay-rich strata of the Mawrth Vallis Group, Mars, in lacustrine, alluvial, and aeolian environments.
Geological Society of America bulletin
2020; 132 (1-2): 17-30
Abstract
The presence of abundant phyllosilicate minerals in Noachian (>3.7 Ga) rocks on Mars has been taken as evidence that liquid water was stable at or near the surface early in martian history. This study investigates some of these clay-rich strata exposed in crater rim and inverted terrain settings in the Mawrth Vallis region of Mars. In Muara crater the 200-m-thick, clay-rich Mawrth Vallis Group (MVG) is subdivided into five informal units numbered 1 (base) to 5 (top). Unit 1 consists of interbedded sedimentary and volcanic or volcaniclastic units showing weak Fe/Mg-smectite alteration deposited in a range of subaerial depositional settings. Above a major unconformity eroded on Unit 1, the dark-toned sediments of Unit 2 and lower Unit 3 are inferred to represent mainly wind-blown sand. These are widely interlayered with and draped by thin layers of light-toned sediment representing fine suspended-load aeolian silt and clay. These sediments show extensive Fe/Mg-smectite alteration, probably reflecting subaerial weathering. Upper Unit 3 and units 4 and 5 are composed of well-layered, fine-grained sediment dominated by Al-phyllosilicates, kaolinite, and hydrated silica. Deposition occurred in a large lake or arm of a martian sea. In the inverted terrain 100 km to the NE, Unit 4 shows very young slope failures suggesting that the clay-rich sediments today retain a significant component of water ice. The MVG provides evidence for the presence of large, persistent standing bodies of water on early Mars as well as a complex association of flanking shoreline, alluvial, and aeolian systems. Some of the clays, especially the Fe/Mg smectites in upper units 1 and 2 appear to have formed through subaerial weathering whereas the aluminosilicates, kaolinite, and hydrated silica of units 3, 4, and 5 formed mainly through alteration of fine sediment in subaqueous environments.
View details for DOI 10.1130/b35185.1
View details for PubMedID 33958812
View details for PubMedCentralID PMC8098079
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Deposition of > 3.7 Ga clay-rich strata of the Mawrth Vallis Group, Mars, in lacustrine, alluvial, and aeolian environments
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
2020; 132 (1-2): 17–30
View details for DOI 10.1130/B35185.1
View details for Web of Science ID 000505809800002
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EDIACARAN (VENDIAN)-PERIOD ALLUVIAL AND COASTAL GEOMORPHOLOGY APPLIED TO DEVELOPMENT OF VERKHNECHONSKOYE AND YARAKTINSKOYE FIELDS, EAST SIBERIA, RUSSIAN FEDERATION
JOURNAL OF SEDIMENTARY RESEARCH
2020; 90 (1): 67–101
View details for DOI 10.2110/jsr.2020.8
View details for Web of Science ID 000512929300004
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EVOLUTION OF AN ARCHEAN FAN DELTA AND ITS IMPLICATIONS FOR THE INITIATION OF UPLIFT AND DEFORMATION IN THE BARBERTON GREENSTONE BELT, SOUTH AFRICA
JOURNAL OF SEDIMENTARY RESEARCH
2019; 89 (9): 849–74
View details for DOI 10.2110/jsr.2019.46
View details for Web of Science ID 000489268800002
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The role of avulsion and splay development in deep-water channel systems: Sedimentology, architecture, and evolution of the deep-water Pliocene Godavari "A" channel complex, India
MARINE AND PETROLEUM GEOLOGY
2019; 105: 81–99
View details for DOI 10.1016/j.marpetgeo.2019.04.010
View details for Web of Science ID 000469896400006
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Provenance of the Neoproterozoic deep-water Zerrissene Group of the Damara Orogen, Namibia, and paleogeographic implications for the closing of the Adamastor Ocean and assembly of the Gondwana supercontinent
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
2019; 131 (3-4): 355–71
View details for DOI 10.1130/B32032.1
View details for Web of Science ID 000460031700001
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Crustal fracturing, unconformities, and barite deposition, 3.26-3.23 Ga, Barberton Greenstone Belt, South Africa
Precambrian Research
2019
View details for DOI 10.1016/j.precamres.2019.02.024
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Provenance and tectonic implications of the 3.28–3.23 Ga Fig Tree Group, central Barberton greenstone belt, South Africa
Precambrian Research
2019: 1-19
View details for DOI 10.1016/j.precamres.2019.02.010
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The terrestrial record of Late Heavy Bombardment
NEW ASTRONOMY REVIEWS
2018; 81: 39–61
View details for DOI 10.1016/j.newar.2018.03.002
View details for Web of Science ID 000436487900002
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Hadean zircon from a 3.3 Ga sandstone, Barberton greenstone belt, South Africa
GEOLOGY
2018
View details for DOI 10.1130/G45276.1
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Initial generation of sand across climate zones of the Mojave, Sierra Nevada, and Klamath Batholiths in California, USA
SEDIMENTARY GEOLOGY
2017; 347: 37-50
View details for DOI 10.1016/j.sedgeo.2016.11.014
View details for Web of Science ID 000393932200003
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A high continental weathering flux into Paleoarchean seawater revealed by strontium isotope analysis of 3.26 Ga barite
EARTH AND PLANETARY SCIENCE LETTERS
2016; 454: 28-35
View details for DOI 10.1016/j.epsl.2016.08.032
View details for Web of Science ID 000386645700004
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Sedimentology of the similar to 3.3 Ga upper Mendon Formation, Barberton Greenstone Belt, South Africa
PRECAMBRIAN RESEARCH
2016; 281: 473-494
View details for DOI 10.1016/j.precamres.2016.06.003
View details for Web of Science ID 000381168500024
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Outcrop characterization of a submarine channel-lobe complex: The Lower Mount Messenger Formation, Taranaki Basin, New Zealand
MARINE AND PETROLEUM GEOLOGY
2016; 71: 360-390
View details for DOI 10.1016/j.marpetgeo.2016.01.004
View details for Web of Science ID 000371650500026
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Interplay between an axial channel belt, slope gullies and overbank deposition in the Puchkirchen Formation in the Molasse Basin, Austria
SEDIMENTOLOGY
2015; 62 (6): 1717-1748
View details for DOI 10.1111/sed.12201
View details for Web of Science ID 000362555200008
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Sedimentology and geochemistry of Archean silica granules
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
2015; 127 (7-8): 1090-1107
View details for DOI 10.1130/B31181.1
View details for Web of Science ID 000359010800012
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Geologic record of partial ocean evaporation triggered by giant asteroid impacts, 3.29-3.23 billion years ago
GEOLOGY
2015; 43 (6): 535-538
View details for DOI 10.1130/G36665.1
View details for Web of Science ID 000358572600023
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Texture-specific Si isotope variations in Barberton Greenstone Belt cherts record low temperature fractionations in early Archean seawater
GEOCHIMICA ET COSMOCHIMICA ACTA
2015; 150: 26-52
View details for DOI 10.1016/j.gca.2014.11.014
View details for Web of Science ID 000348511300003
- High resolution tephra and U/Pb chronology of the 3.33–3.26 Ga Mendon Formation, Barberton Greenstone Belt, South Africa PRECAMBRIAN RESEARCH 2015; 261: 54-74
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PROCESSES OF SEDIMENTATION AND STRATIGRAPHIC ARCHITECTURE OF DEEP-WATER BRAIDED LOBE COMPLEXES: THE PLIOCENE REPETTO AND PICO FORMATIONS, VENTURA BASIN, USA
JOURNAL OF SEDIMENTARY RESEARCH
2014; 84 (10): 910-934
View details for DOI 10.2110/jsr.2014.71
View details for Web of Science ID 000343873500012
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Paleoarchean ocean crust and mantle excavated by meteor impact: Insight into early crustal processes and tectonics
GEOLOGY
2014; 42 (7): 635-638
View details for DOI 10.1130/G35614.1
View details for Web of Science ID 000339961400023
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Stratigraphic architecture and evolution of a deep-water slope channel-levee and overbank apron: The Upper Miocene Upper Mount Messenger Formation, Taranaki Basin
MARINE AND PETROLEUM GEOLOGY
2014; 52: 22-41
View details for DOI 10.1016/j.marpetgeo.2014.01.006
View details for Web of Science ID 000334089300003
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Physics of crustal fracturing and chert dike formation triggered by asteroid impact, similar to 3.26 Ga, Barberton greenstone belt, South Africa
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
2014; 15 (4): 1054-1070
View details for DOI 10.1002/2014GC005229
View details for Web of Science ID 000336493400015
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Primary silica granules-A new mode of Paleoarchean sedimentation
GEOLOGY
2014; 42 (4): 283-286
View details for DOI 10.1130/G35187.1
View details for Web of Science ID 000333244300006
- Stratigraphic architecture and evolution of a deep-water slope channel-levee and overbank apron: The Upper Miocene Upper Mount Messenger Formation, Taranaki Basin MARINE AND PETROLEUM GEOLOGY 2014; 52: 22-41
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Recently discovered 3.42-3.23 Ga impact layers Barberton Belt, South Africa: 3.8 Ga detrital zircons, Archean impact history, and tectonic implications
GEOLOGY
2014; 42 (9): 747-750
View details for DOI 10.1130/G35743.1
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Timing of deposition and deformation of the Moodies Group (Barberton Greenstone Belt, South Africa): Very-high-resolution of Archaean surface processes
PRECAMBRIAN RESEARCH
2013; 231: 236-262
View details for DOI 10.1016/j.precamres.2013.03.021
View details for Web of Science ID 000321595200014
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Crustal fracturing and chert dike formation triggered by large meteorite impacts, ca. 3.260 Ga, Barberton greenstone belt, South Africa
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
2013; 125 (5-6): 894-912
View details for DOI 10.1130/B30782.1
View details for Web of Science ID 000323270500014
- Geologic Map of the West-Central Barberton Greenstone belt, South Africa GEOLOGICAL SOCIETY OF AMERICA MAP & CHART SERIES 2013; MCS103
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Channelized debris-flow deposits and their impact on turbidity currents: The Puchkirchen axial channel belt in the Austrian Molasse Basin
SEDIMENTOLOGY
2012; 59 (7): 2042-2070
View details for DOI 10.1111/j.1365-3091.2012.01334.x
View details for Web of Science ID 000311403500004
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Geochemistry and petrology of komatiites of the Pioneer Ultramafic Complex of the 3.3 Ga Weltevreden Formation, Barberton greenstone belt, South Africa
PRECAMBRIAN RESEARCH
2012; 212: 1-12
View details for DOI 10.1016/j.precamres.2012.04.017
View details for Web of Science ID 000307085500001
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Palaeogeography and diachronous infill of an ancient deep-marine foreland basin, Upper Cretaceous Cerro Toro Formation, Magallanes Basin
BASIN RESEARCH
2012; 24 (3): 269-294
View details for DOI 10.1111/j.1365-2117.2011.00528.x
View details for Web of Science ID 000303043000002
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Climbing-ripple successions in turbidite systems: depositional environments, sedimentation rates and accumulation times
SEDIMENTOLOGY
2012; 59 (3): 867-898
View details for DOI 10.1111/j.1365-3091.2011.01283.x
View details for Web of Science ID 000301718300007
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Mineralogy and diagenesis of 3.24 Ga meteorite impact spherules
PRECAMBRIAN RESEARCH
2012; 196: 128-148
View details for DOI 10.1016/j.precamres.2011.12.001
View details for Web of Science ID 000301036500008
- Geologic map of the west-central Barberton greenstone belt, South Africa: GEOLOGICAL SOCIETY OF AMERICA Map and Chart Series 2012; MCS103
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Fragmentation and dispersal of komatiitic pyroclasts in the 3.5-3.2 Ga Onverwacht Group, Barberton greenstone belt, South Africa
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
2011; 123 (5-6): 1112-1126
View details for DOI 10.1130/B30191.1
View details for Web of Science ID 000288792500019
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Two fundamentally different types of submarine canyons along the continental margin of Equatorial Guinea
MARINE AND PETROLEUM GEOLOGY
2011; 28 (3): 843-860
View details for DOI 10.1016/j.marpetgeo.2010.07.012
View details for Web of Science ID 000287895800014
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Stratigraphic evolution of a submarine channel-lobe complex system in a narrow fairway within the Magallanes foreland basin, Cerro Toro Formation, southern Chile
MARINE AND PETROLEUM GEOLOGY
2011; 28 (3): 785-806
View details for DOI 10.1016/j.marpetgeo.2010.05.013
View details for Web of Science ID 000287895800011
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FACIES AND ARCHITECTURAL ASYMMETRY IN A CONGLOMERATE-RICH SUBMARINE CHANNEL FILL, CERRO TORO FORMATION, SIERRA DEL TORO, MAGALLANES BASIN, CHILE
JOURNAL OF SEDIMENTARY RESEARCH
2010; 80 (11-12): 1085-1108
View details for DOI 10.2110/jsr.2010.092
View details for Web of Science ID 000285072800011
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Evidence for a low-O-2 Archean atmosphere from nickel-rich chrome spinels in 3.24 Ga impact spherules, Barberton greenstone belt, South Africa
EARTH AND PLANETARY SCIENCE LETTERS
2010; 296 (3-4): 319-328
View details for DOI 10.1016/j.epsl.2010.05.014
View details for Web of Science ID 000280940300015
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The Petrogenesis of Volcaniclastic Komatiites in the Barberton Greenstone Belt, South Africa: a Textural and Geochemical Study
JOURNAL OF PETROLOGY
2010; 51 (4): 947-972
View details for DOI 10.1093/petrology/egq008
View details for Web of Science ID 000276992800007
- Did LHB end not with a bang but a whimper? The geologic evidence 41st Lunar and Planetary Science Conference. 2010: 2563
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Abundant pyroclastic komatiitic volcanism in the 3.5-3.2 Ga Barberton greenstone belt, South Africa
GEOLOGY
2008; 36 (10): 779-782
View details for DOI 10.1130/G24854A.1
View details for Web of Science ID 000259835800007
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Biosignatures in Ancient Rocks: A Summary of Discussions at a Field Workshop on Biosignatures in Ancient Rocks
ASTROBIOLOGY
2008; 8 (5): 883-895
View details for DOI 10.1089/ast.2008.0257
View details for Web of Science ID 000262250100002
View details for PubMedID 19025466
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Architecture and evolution of the Paine channel complex, Cerro Toro Formation (Upper Cretaceous), Silla Syncline, Magallanes Basin, Chile
SEDIMENTOLOGY
2008; 55 (4): 979-1009
View details for DOI 10.1111/j.1365-3091.2007.00933.x
View details for Web of Science ID 000257498200013
- The evolution of an elongate foreland basin: the deep- to shallow-marine filling of the Cretaceous Magallanes Basin, Chile, 28th Annual GCSSEPM Foundation Bob F. Perkins Research Conference, 2008: 268-310
- Sedimentology and architecture of coarse-grained submarine channel fills, Lobitos Village, Peru Deep-Water Outcrops of the World Atlas edited by Nilsen, T., Shew, R., Steffens, G., Studlick, J. American Association of Petroleum Geologists. 2008: 3P
- Preface Deep-Water Outcrops of the World Atlas edited by Nilsen, T., Shew, R., Steffens, G., Studlick, J. American Association of Petroleum Geologists. 2008: 2
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The five stable isotope compositions of Fig Tree barites: Implications on sulfur cycle in ca. 3.2 Ga oceans
GEOCHIMICA ET COSMOCHIMICA ACTA
2007; 71 (20): 4868-4879
View details for DOI 10.1016/j.gca.2007.05.032
View details for Web of Science ID 000250948100005
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A comment on "Weathering of quartz as an Archean climatic indicator" by N.H. Sleep and A.M. Hessler [Earth Planet. Sci. Lett. 241 (2006) 594-602]
EARTH AND PLANETARY SCIENCE LETTERS
2007; 253 (3-4): 530-533
View details for DOI 10.1016/j.epsl.2006.11.006
View details for Web of Science ID 000244384100019
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Ironstone bodies of the Barberton greenstone belt, South Africa: Products of a Cenozoic hydrological system, not Archean hydrothermal vents!
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
2007; 119 (1-2): 65-87
View details for DOI 10.1130/B25997.1
View details for Web of Science ID 000243486200005
- Tectonic controls on atmospheric, climatic, and biological evolution 3.5-2.4 Ga PRECAMBRIAN RESEARCH 2007; v. 158: p. 177-197
- An overview of the geology of the Barberton greenstone belt and vicinity: Implications for early crustal development Earth's Oldest Rocks edited by Van Kranendonk, M. J., Smithies, H., Bennett, V. Elsevier, Amsterdam. 2007: 481–526
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Weathering and sediment generation in the Archean: An integrated study of the evolution of siliciclastic sedimentary rocks of the 3.2 Ga Moodies Group, Barberton greenstone belt, South Africa
PRECAMBRIAN RESEARCH
2006; 151 (3-4): 185-210
View details for DOI 10.1016/j.precamres.2006.08.008
View details for Web of Science ID 000243151800003
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The origin of carbonaceous matter in pre-3.0 Ga greenstone terrains: A review and new evidence from the 3.42 Ga Buck Reef Chert
EARTH-SCIENCE REVIEWS
2006; 76 (3-4): 259-300
View details for DOI 10.1016/j.earscirev.2006.03.003
View details for Web of Science ID 000239126000005
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Stable isotope and rare earth element evidence for recent ironstone pods within the Archean Barberton greenstone belt, South Africa
GEOCHIMICA ET COSMOCHIMICA ACTA
2006; 70 (6): 1457-1470
View details for DOI 10.1016/j.gca.2005.11.016
View details for Web of Science ID 000236252800008
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Hydrogen-based carbon fixation in the earliest known photosynthetic organisms
GEOLOGY
2006; 34 (1): 37-40
View details for DOI 10.1130/G22012.1
View details for Web of Science ID 000234582100012
- Compositional grading in an 3,240 Ma impact-produced spherule bed, Barberton greenstone belt, South Africa: A key to impact plume evolution JOURNAL OF SOUTH AFRICAN GEOLOGY 2006; 76: 233-244
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Iron and manganese minerals from South African ironstone deposits
PHYSICA SCRIPTA
2005; T115: 918-920
View details for Web of Science ID 000204272100276
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Textural trends in turbidites and slurry beds from the Oligocene flysch of the East Carpathians, Romania
SEDIMENTOLOGY
2004; 51 (5): 945-972
View details for DOI 10.1111/j.1365-3091.2004.00653.x
View details for Web of Science ID 000224024800003
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Depositional processes of the gravelly debris flow deposits, South Dolomite alluvial fan, Owens Valley, California
GEOSCIENCES JOURNAL
2004; 8 (2): 153-170
View details for Web of Science ID 000222589700003
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Geologic evidence for Archean atmospheric and climatic evolution: Fluctuating levels of CO2, CH4, and O-2, with an overriding tectonic control
GEOLOGY
2004; 32 (6): 493-496
View details for DOI 10.1130/G20342.1
View details for Web of Science ID 000221849500008
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A lower limit for atmospheric carbon dioxide levels 3.2 billion years ago
NATURE
2004; 428 (6984): 736-738
Abstract
The quantification of greenhouse gases present in the Archaean atmosphere is critical for understanding the evolution of atmospheric oxygen, surface temperatures and the conditions for life on early Earth. For instance, it has been argued that small changes in the balance between two potential greenhouse gases, carbon dioxide and methane, may have dictated the feedback cycle involving organic haze production and global cooling. Climate models have focused on carbon dioxide as the greenhouse gas responsible for maintaining above-freezing surface temperatures during a time of low solar luminosity. However, the analysis of 2.75-billion-year (Gyr)-old palaeosols--soil samples preserved in the geologic record--have recently provided an upper constraint on atmospheric carbon dioxide levels well below that required in most climate models to prevent the Earth's surface from freezing. This finding prompted many to look towards methane as an additional greenhouse gas to satisfy climate models. Here we use model equilibrium reactions for weathering rinds on 3.2-Gyr-old river gravels to show that the presence of iron-rich carbonate relative to common clay minerals requires a minimum partial pressure of carbon dioxide several times higher than present-day values. Unless actual carbon dioxide levels were considerably greater than this, climate models predict that additional greenhouse gases would still need to have a role in maintaining above-freezing surface temperatures.
View details for DOI 10.1038/nature02471
View details for Web of Science ID 000220823800035
View details for PubMedID 15085128
- Deep-water sandstones: Submarine canyon to basin plain western California Pacific Section AAPG and AAPG, Pacific Section AAPG Publication GB 2004; 79
- A stratigraphic and architectural-element methodology for the subdivision and interpretation of deep-water clastic sequences: an example from the Cretaceous Venado Sandstone, Sacramento Valley, California Deep-Water Sedimentation: Technological Challenges for the Next Millennium edited by Appi, C. J., D'Avila, R., Viana, A. ABGP. 2004
- Early Precambrian stratigraphic record of large extraterrestrial impacts Tempos and Events in Precambrian Time edited by Eriksson, P. A., Nelson, D. Elsevier, Amsterdam. 2004: 27–45
- Photosynthetic microbial mats in the 3 in the 3,416-Myr-old ocean Nature 2004; 431: 549-552
- Ironstone pods in the Archean Barberton greenstone belt, South Africa: Earth's oldest seafloor hydrothermal vents reinterpreted as Quaternary subaerial springs: Reply: GEOLOGY, ONLINE FORUM 2004: e69
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Thermal history of the 3.5-3.2 Ga Onverwacht and Fig Tree Groups, Barberton greenstone belt, South Africa, inferred by Raman microspectroscopy of carbonaceous material
GEOLOGY
2004; 32 (1): 37-40
View details for DOI 10.1130/G19915.1
View details for Web of Science ID 000188253800010
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Microstructure of high-temperature (> 73 degrees C) siliceous sinter deposited around hot springs and geysers, Yellowstone National Park: the role of biological and abiological processes in sedimentation
CANADIAN JOURNAL OF EARTH SCIENCES
2003; 40 (11): 1611-1642
View details for DOI 10.1139/E03-066
View details for Web of Science ID 000187035200012
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Ironstone pods in the Archean Barberton greenstone belt, South Africa: Earth's oldest seafloor hydrothermal vents reinterpreted as Quaternary subaerial springs
GEOLOGY
2003; 31 (10): 909-912
View details for Web of Science ID 000185692200020
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High Archean climatic temperature inferred from oxygen isotope geochemistry of cherts in the 3.5 Ga Swaziland Supergroup, South Africa
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
2003; 115 (5): 566-580
View details for Web of Science ID 000182526700004
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Early Archean spherule beds: Chromium isotopes confirm origin through multiple impacts of projectiles of carbonaceous chondrite type
GEOLOGY
2003; 31 (3): 283-286
View details for Web of Science ID 000181199100023
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Facies of slurry-flow deposits, Britannia Formation (Lower Cretaceous), North Sea: implications for flow evolution and deposit geometry
SEDIMENTOLOGY
2003; 50 (1): 45-80
View details for Web of Science ID 000181057200003
- Spherule Beds 3.473.24 Billion Years Old in the Barberton Greenstone Belt South Africa: A Record of Large Meteorite Impacts and Their Influence on Early Crustal and Biological Evolution Astrobiology, 2003; 3: 7-48
- Field guide to the geology of the 3.5-3.2 Ga Barberton Greenstone Belt, South Africa Guidebook prepared for Field Conference, Archean Surface Processes 2003; 2
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An Archean impact layer from the Pilbara and Kaapvaal cratons
SCIENCE
2002; 297 (5585): 1325-1327
Abstract
The Barberton greenstone belt of South Africa and the eastern Pilbara block of Western Australia provide information about Earth's surface environments between 3.2 and 3.5 billion years ago, including evidence for four large bolide impacts that likely created large craters, deformed the target rocks, and altered the environment. We have obtained identical single-zircon uranium-lead ages of 3470 +/- 2 million years ago for the oldest impact events from each craton. These deposits represent a single global fallout layer that is associated with sedimentation by an impact-generated tsunami and in Western Australia is represented by a major erosional unconformity.
View details for Web of Science ID 000177573900040
View details for PubMedID 12193781
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Facies architecture of a submarine fan channel-levee complex: The Juniper Ridge Conglomerate, Coalinga, California
SEDIMENTOLOGY
2002; 49 (2): 335-362
View details for Web of Science ID 000175249000007
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Relationship between spring and geyser activity and the deposition and morphology of high temperature (> 73 degrees C) siliceous sinter, Yellowstone National Park, Wyoming, USA
JOURNAL OF SEDIMENTARY RESEARCH
2001; 71 (5): 747-763
View details for Web of Science ID 000170973300009
- Silicified microbial community at Steep Cone Hot (Spring), Yellowstone National Park Microbes and Environments 2001; 16: 125-130
- The zonation and structuring of siliceous sinter around hot springs, Yellowstone National Park, and the role of thermophilic bacteria in its deposition Thermophiles: Biodiversity, Ecology, and Evolution edited by Reysenbach, et al. Kluwer Academic/Plenum Publishers, New York. 2001: 143–166
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Slurry-flow deposits in the Britannia Formation (Lower Cretaceous), North Sea: a new perspective on the turbidity current and debris flow problem
SEDIMENTOLOGY
2000; 47 (1): 31-70
View details for Web of Science ID 000086164700004
- Deep-water sandstones, submarine canyon to basin plain, western California Field guide for AAPG Hedberg Field Research Conference 2000
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The oldest impact deposits on Earth - First confirmation of an extraterrestrial component
1st Workshop of the European-Science-Foundation Scientific Program
SPRINGER-VERLAG BERLIN. 2000: 99–115
View details for Web of Science ID 000170923300005
- Foreland basin sedimentation in the Mapepe Formation, southern-facies Fig Tree Group Geologic evolution of the Barberton Greenstone Belt, South Africa edited by Lowe, D. R., Byerly, G. R. Geological Society of America. 1999: 233–258
- Modes of accumulation of carbonaceous matter in the Early Archean: A petrographic and geochemical study of the carbonaceous cherts of the Swaziland Supergroup Geologic evolution of the Barberton Greenstone Belt, South Africa edited by Lowe, D. R., Byerly, G. R. Geological Society of America. 1999: 115–132
- Geologic evolution of the Barberton Greenstone Belt and vicinity Geologic evolution of the Barberton Greenstone Belt, South Africa edited by Lowe, D. R., Byerly, G. R. Geological Society of America. 1999: 287–312
- Petrology and sedimentology of cherts and related silicified sedimentary rocks in the Swaziland Supergroup Geologic evolution of the Barberton Greenstone Belt, South Africa edited by Lowe, D. R., Byerly, G. R. Geological Society of America. 1999: 83–114
- Structural divisions and development of the west-central part of the Barberton Greenstone Belt Geologic evolution of the Barberton Greenstone Belt, South Africa edited by Lowe, D. R., Byerly, G. R. Geological Society of America. 1999: 37–82
- Sedimentology, mineralogy, and implications of silicified evaporites in the Kromberg Formation, Barberton Greenstone Belt, South Africa Geologic evolution of the Barberton Greenstone Belt, South Africa edited by Lowe, D. R., Byerly, G. R. Geological Society of America. 1999: 167–188
- Shallow-water sedimentation of accretionary lapilli-bearing strata of the Msauli Chert: Evidence of explosive hydromagmatic komatiitic volcanism Geologic evolution of the Barberton Greenstone Belt, South Africa edited by Lowe, D. R., Byerly, G. R. Geological Society of America. 1999: 213–232
- Subaqueous to subaerial Archean ultramafic phreatomagmatic volcanism, Kromberg Formation, Barberton Greenstone Belt, South Africa Geologic evolution of the Barberton Greenstone Belt, South Africa edited by Lowe, D. R., Byerly, G. R. Geological Society of America. 1999: 151–166
- Geologic Evolution of the Barberton Greenstone Belt, South Africa Geological Society of America Special Paper edited by Lowe, D. R., Byerly, G. R. Geological Society of America. 1999
- Sedimentary petrography and provenance of the Archean Moodies Group, Barberton Greenstone Belt Geologic evolution of the Barberton Greenstone Belt, South Africa edited by Lowe, D. R., Byerly, G. R. Geological Society of America. 1999: 259–286
- Stratigraphy of the west-central part of the Barberton Greenstone Belt, South Africa Geologic evolution of the Barberton Greenstone Belt, South Africa edited by Lowe, D. R., Byerly, G. R. Geological Society of America . 1999: 1–36
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Reinterpretation of depositional processes in a classic flysch sequence (Pennsylvanian Jackfork Group), Ouachita Mountains, Arkansas and Oklahoma: Discussion
AAPG BULLETIN-AMERICAN ASSOCIATION OF PETROLEUM GEOLOGISTS
1997; 81 (3): 460-465
View details for Web of Science ID A1997WN71200009
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Numerical simulation of turbidity current flow and sedimentation .2. Results and geological applications
SEDIMENTOLOGY
1997; 44 (1): 85-104
View details for Web of Science ID A1997WJ48300005
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Numerical simulation of turbidity current flow and sedimentation .1. Theory
SEDIMENTOLOGY
1997; 44 (1): 67-84
View details for Web of Science ID A1997WJ48300004
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Statistical analysis of bed-thickness patterns in a turbidite section from the great valley sequence, Cache Creek, northern California
JOURNAL OF SEDIMENTARY RESEARCH
1996; 66 (5): 900-908
View details for Web of Science ID A1996VM10700005
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Quantification of the effects of secondary matrix on the analysis of sandstone composition, and a petrographic-chemical technique for retrieving original framework grain modes of altered sandstones
JOURNAL OF SEDIMENTARY RESEARCH
1996; 66 (3): 548-558
Abstract
Most studies of sandstone provenance involve modal analysis of framework grains using techniques that exclude the fine-grained breakdown products of labile mineral grains and rock fragments, usually termed secondary matrix or pseudomatrix. However, the data presented here demonstrate that, when the proportion of pseudomatrix in a sandstone exceeds 10%, standard petrographic analysis can lead to incorrect provenance interpretation. Petrographic schemes for provenance analysis such as QFL and QFR should not therefore be applied to sandstones containing more than 10% secondary matrix. Pseudomatrix is commonly abundant in sandstones, and this is therefore a problem for provenance analysis. The difficulty can be alleviated by the use of whole-rock chemistry in addition to petrographic analysis. Combination of chemical and point-count data permits the construction of normative compositions that approximate original framework grain compositions. Provenance analysis is also complicated in many cases by fundamental compositional alteration during weathering and transport. Many sandstones, particularly shallow marine deposits, have undergone vigorous reworking, which may destroy unstable mineral grains and rock fragments. In such cases it may not be possible to retrieve provenance information by either petrographic or chemical means. Because of this, pseudomatrix-rich sandstones should be routinely included in chemical-petrological provenance analysis. Because of the many factors, both pre- and post-depositional, that operate to increase the compositional maturity of sandstones, petrologic studies must include a complete inventory of matrix proportions, grain size and sorting parameters, and an assessment of depositional setting.
View details for Web of Science ID A1996UL26900014
View details for PubMedID 11539329
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Prolonged magmatism and time constraints for sediment deposition in the early Archean Barberton greenstone belt: Evidence from the Upper Onverwacht and Fig Tree groups
PRECAMBRIAN RESEARCH
1996; 78 (1-3): 125-138
View details for Web of Science ID A1996UP26100009
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COMPOSITIONAL EVOLUTION OF COARSE CLASTIC SEDIMENTS IN THE SOUTHWESTERN UNITED-STATES FROM 1.8 TO 0.2 GA AND IMPLICATIONS FOR RELATIONSHIPS BETWEEN THE DEVELOPMENT OF CRUSTAL BLOCKS AND THEIR SEDIMENTARY COVER
JOURNAL OF SEDIMENTARY RESEARCH SECTION A-SEDIMENTARY PETROLOGY AND PROCESSES
1995; 65 (3): 477-494
View details for Web of Science ID A1995RH46800003
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THE INFLUENCE OF SEDIMENT RECYCLING AND BASEMENT COMPOSITION ON EVOLUTION OF MUDROCK CHEMISTRY IN THE SOUTHWESTERN UNITED-STATES
GEOCHIMICA ET COSMOCHIMICA ACTA
1995; 59 (14): 2919-2940
View details for Web of Science ID A1995RL88800004
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A CONCEPTUAL REVIEW OF REGIONAL-SCALE CONTROLS ON THE COMPOSITION OF CLASTIC SEDIMENT AND THE COEVOLUTION OF CONTINENTAL BLOCKS AND THEIR SEDIMENTARY COVER
JOURNAL OF SEDIMENTARY RESEARCH SECTION A-SEDIMENTARY PETROLOGY AND PROCESSES
1995; 65 (1): 1-12
Abstract
Both sediment recycling and first-cycle input influence the composition of clastic material in sedimentary systems. This paper examines conceptually the roles played by these processes in governing the composition of clastic sediment on a regional scale by outlining the expected effects on sediment composition of protracted sediment recycling and of continuous first-cycle input on a maturing continental block. Generally speaking, long-term recycling tends to enrich sediments in the most chemically and mechanically stable components: quartz in the sand and silt size fractions, and illite among the clay minerals. Sandstones trend towards pure quartz arenites, and mudrocks become more potassic and aluminous. The average grain size of clastic sediment decreases by a combination of progressive attrition of sand grains and ongoing breakdown of primary silicate minerals to finer-grained clay minerals and oxides. Sandstones derived by continuous first-cycle input from an evolving continental crustal source also become increasingly rich in quartz, but in addition become more feldspathic as the proportion of granitic material in the upper continental crust increases during crustal stabilization. Associated mudrocks also become richer in potassium and aluminum, but will have higher K2O/Al2O3 ratios than recycled muds. The average grain size of the sediment may increase with time as the proportion of sand-prone granitic source rocks increases at the expense of more mud-prone volcanic sources. In general, except in instances where chemical weathering is extreme, first-cycle sediments lack the compositional maturity of recycled detritus, and are characterized by the presence of a variety of primary silicate minerals. Sedimentary systems are not usually completely dominated by either recycling or first-cycle detritus. Generally, however, sedimentary systems associated with the earliest phases of formation and accretion of continental crust are characterized by first-cycle input from igneous and metamorphic rocks, whereas those associated with more mature cratons tend to be dominated by recycled sedimentary material.
View details for Web of Science ID A1995QE05100001
View details for PubMedID 11541214
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LATE SYNDEPOSITIONAL DEFORMATION AND DETACHMENT TECTONICS IN THE BARBERTON GREENSTONE-BELT, SOUTH-AFRICA
TECTONICS
1994; 13 (6): 1514-1536
View details for Web of Science ID A1994PV53400012
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SPINEL FROM ARCHEAN IMPACT SPHERULES
GEOCHIMICA ET COSMOCHIMICA ACTA
1994; 58 (16): 3469-3486
View details for Web of Science ID A1994PE61300012
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SM-ND DATING OF FIG TREE CLAY-MINERALS OF THE BARBERTON GREENSTONE-BELT, SOUTH-AFRICA
GEOLOGY
1994; 22 (3): 199-202
Abstract
Sm-Nd isotopic data from carbonate-derived clay minerals of the 3.22-3.25 Ga Fig Tree Group, Barberton greenstone belt, South Africa, form a linear array corresponding to an age of 3102 +/- 64 Ma, making these minerals the oldest dated clays on Earth. The obtained age is 120-160 m.y. younger than the depositional age determined by zircon geochronology. Nd model ages for the clays range from approximately 3.39 to 3.44 Ga and almost cover the age variation of the Barberton greenstone belt rocks, consistent with independent evidence that the clay minerals are derived from material of the belt. The combined isotopic and mineralogical data provide evidence for a cryptic thermal overprint in the sediments of the belt. However, the highest temperature reached by the samples since the time of clay-mineral formation was <300 degrees C, lower than virtually any known early Archean supracrustal sequence.
View details for Web of Science ID A1994MZ72200002
View details for PubMedID 11540244
- ACCRETIONARY HISTORY OF THE ARCHEAN BARBERTON GREENSTONE BELT (3.55-3.22 GA), SOUTHERN AFRICA GEOLOGY 1994; 22: 1099-1102
- DEPOSITIONAL AND TECTONIC SETTING OF THE ARCHEAN MOODIES GROUP, BARBERTON GREENSTONE BELT, SOUTH AFRICA PRECAMBRIAN RES. 1994; 68: 257-290
- ARCHEAN GREENSTONE-RELATED SEDIMENTARY ROCKS in: Archean crustal evolution, Condie, K. C., ed., Elsevier, Amsterdam. 1994: 121–169
- EARLY ENVIRONMENTS: CONSTRAINTS AND OPPORTUNITIES FOR EARLY EVOLUTION in: Early life on Earth: Bengtson, S., ed., Nobel Symposium No. 84 Columbia University Press. 1994: 24–35
- THE ABIOLOGICAL ORIGIN OF DESCRIBED STROMATOLITES OLDER THAN 3.2 GA GEOLOGY 1994; 22: 387-390
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3.4-BILLION-YEAR-OLD BIOGENIC PYRITES FROM BARBERTON, SOUTH-AFRICA - SULFUR ISOTOPE EVIDENCE
SCIENCE
1993; 262 (5133): 555-557
Abstract
Laser ablation mass spectroscopy analyses of sulfur isotopic compositions of microscopic-sized grains of pyrite that formed about 3.4 billion years ago in the Barberton Greenstone Belt, South Africa, show that the pyrite formed by bacterial reduction of seawater sulfate. These data imply that by about 3.4 billion years ago sulfate-reducing bacteria had become active, the oceans were rich in sulfate, and the atmosphere contained appreciable amounts (>10(-13) of the present atmospheric level) of free oxygen.
View details for Web of Science ID A1993MC93500036
View details for PubMedID 11539502
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GEOCHEMISTRY OF A SILICIFIED, FELSIC VOLCANICLASTIC SUITE FROM THE EARLY ARCHEAN PANORAMA FORMATION, PILBARA BLOCK, WESTERN-AUSTRALIA - AN EVALUATION OF DEPOSITIONAL AND POSTDEPOSITIONAL PROCESSES WITH SPECIAL EMPHASIS ON THE RARE-EARTH ELEMENTS
PRECAMBRIAN RESEARCH
1993; 60 (1-4): 99-116
View details for Web of Science ID A1993KL37000005
- TIMING OF DEFORMATION OF THE ARCHAEAN BARBERTON GREENSTONE BELT, SOUTH AFRICA: CONSTRAINTS FROM ZIRCON DATING OF THE SALISBURY KOP PLUTON SOUTH AFRICAN JOURNAL OF GEOLOGY 1993; 96: 1-8
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A NUMERICAL-MODEL FOR SEDIMENTATION FROM HIGHLY-CONCENTRATED MULTI-SIZED SUSPENSIONS
MATHEMATICAL GEOLOGY
1992; 24 (4): 393-415
View details for Web of Science ID A1992HV13100004
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NOBLE-METAL ABUNDANCES IN AN EARLY ARCHEAN IMPACT DEPOSIT
GEOCHIMICA ET COSMOCHIMICA ACTA
1992; 56 (3): 1365-1372
Abstract
We report detailed analyses on the concentrations of the noble metals Pd, Os, Ir, Pt, and Au in an early Archean spherule bed (S4) of probable impact origin from the lower Fig Tree Group, Barberton Greenstone Belt, South Africa. Compared to other sedimentary deposits of known or suspected impact origin, some noble metals are present in exceptionally high concentrations. Noble metal abundances are fractionated relative to abundances in chondrites with ratios of Os/Ir, Pt/Ir, Pd/Ir, and Au/Ir at only 80, 80, 41, and 2% of these values in CI chondrites. Although an extraterrestrial source is favored for the noble metal enrichment, the most plausible cause of the fractionation is by regional hydrothermal/metasomatic alteration.
View details for Web of Science ID A1992HJ96300036
View details for PubMedID 11537203
- MAJOR EVENTS IN THE GEOLOGICAL DEVELOPMENT OF THE PRECAMBRIAN EARTH in: The Proterozoic Biosphere, Schopf, J. W., and Klein, C., eds. Cambridge University Press. 1992: 67–76
- THE ARCHEAN GEOLOGIC RECORD in: The Proterozoic Biosphere, Schopf, J.W., and Klein, C., eds. Cambridge University Press. 1992: 13–20
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FLOW PROPERTIES OF TURBIDITY CURRENTS IN BUTE INLET, BRITISH-COLUMBIA
SEDIMENTOLOGY
1991; 38 (6): 975-996
View details for Web of Science ID A1991HD50300001
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CHRONOLOGY OF EARLY ARCHEAN GRANITE-GREENSTONE EVOLUTION IN THE BARBERTON MOUNTAIN LAND, SOUTH-AFRICA, BASED ON PRECISE DATING BY SINGLE ZIRCON EVAPORATION
EARTH AND PLANETARY SCIENCE LETTERS
1991; 103 (1-4): 41-54
Abstract
We report precise 207Pb/206Pb single zircon evaporation ages for low-grade felsic metavolcanic rocks within the Onverwacht and Fig Tree Groups of the Barberton Greenstone Belt (BGB), South Africa, and from granitoid plutons bordering the belt. Dacitic tuffs of the Hooggenoeg Formation in the upper part of the Onverwacht Group yield ages between 3445 +/- 3 and 3416 +/- 5 Ma and contain older crustal components represented by a 3504 +/- 4 Ma old zircon xenocryst. Fig Tree dacitic tuffs and agglomerates have euhedral zircons between 3259 +/- 5 and 3225 +/- 3 Ma in age which we interpret to reflect the time of crystallization. A surprisingly complex xenocryst population in one sample documents ages from 3323 +/- 4 to 3522 +/- 4 Ma. We suspect that these xenocrysts were inherited, during the passage of the felsic melts to the surface, from various sources such as greenstones and granitoid rocks now exposed in the form of tonalite-trondhjemite plutons along the southern and western margins of the BGB, and units predating any of the exposed greenstone or intrusive rocks. Several of the granitoids along the southern margin of the belt have zircon populations with ages between 3490 and 3440 Ma. coeval with or slightly older than Onverwacht felsic volcanism, while the Kaap Valley pluton along the northwestern margin of the belt is coeval with Fig Tree dacitic volcanism. These results emphasize the comagmatic relationships between greenstone felsic volcanic units and the surrounding plutonic suites. Some of the volcanic plutonic units contain zircon xenocrysts older than any exposed rocks. These indicate the existence of still older units, possibly stratigraphically lower and older portions of the greenstone sequence itself, older granitoid intrusive rocks, or bodies of older, unrelated crustal material. Our data show that the Onverwacht and Fig Tree felsic units have distinctly different ages and therefore do not represent a single, tectonically repeated unit as proposed by others. Unlike the late Archaean Abitibi greenstone belt in Canada, which formed over about 30 Ma. exposed rocks in the BGB formed over a period of at least 220 Ma. The complex zircon populations encountered in this study imply that conventional multigrain zircon dating may not accurately identify the time of felsic volcanic activity in ancient greenstones. A surprising similarity in rock types, tectonic evolution, and ages of the BGB in the Kaapvaal craton of southern Africa and greenstones in the Pilbara Block of Western Australia suggests that these two terrains may have been part of a larger crustal unit in early Archaean times.
View details for Web of Science ID A1991FM72100004
View details for PubMedID 11538384
- LAHARS: VOLCANO-HYDROLOGIC EVENTS AND DEPOSITION IN THE DEBRIS FLOW - HYPERCONCENTRATED FLOW CONTINUUM SEPM SPECIAL PUBLICATION 45 1991: 59-70
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FAN-DELTA SEQUENCE IN THE ARCHEAN FIG TREE GROUP, BARBERTON GREENSTONE-BELT, SOUTH-AFRICA
PRECAMBRIAN RESEARCH
1990; 48 (4): 375-393
View details for Web of Science ID A1990EQ54800004
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PETROGRAPHY AND PROVENANCE OF SILICIFIED EARLY ARCHEAN VOLCANICLASTIC SANDSTONES, EASTERN PILBARA BLOCK, WESTERN-AUSTRALIA
SEDIMENTOLOGY
1989; 36 (5): 821-836
View details for Web of Science ID A1989AT88100006
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GEOLOGICAL AND GEOCHEMICAL RECORD OF 3400-MILLION-YEAR-OLD TERRESTRIAL METEORITE IMPACTS
SCIENCE
1989; 245 (4921): 959-962
Abstract
Beds of sand-sized spherules in the 3400-million-year-old Fig Tree Group, Barberton Greenstone belt, South Africa, formed by the fall of quenched liquid silicate droplets into a range of shallow-to deep-water depositional environments. The regional extent of the layers, their compositional complexity, and lack of included volcanic debris suggest that they are not products of volcanic activity. The layers are greatly enriched in iridium and other platinum group elements in roughly chondritic proportions. Geochemical modeling based on immobile element abundances suggests that the original average spherule composition can be approximated by a mixture of fractionated tholeiitic basalt, komatiite, and CI carbonaceous chondrite. The spherules are thought to be the products of large meteorite impacts on the Archean earth.
View details for Web of Science ID A1989AM93300022
View details for PubMedID 17780536
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SHALLOW-WATER VOLCANICLASTIC DEPOSITION IN THE EARLY ARCHEAN PANORAMA FORMATION, WARRAWOONA GROUP, EASTERN PILBARA BLOCK, WESTERN-AUSTRALIA
SEDIMENTARY GEOLOGY
1989; 64 (1-3): 43-63
View details for Web of Science ID A1989AQ55500004
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STRATIGRAPHY AND SEDIMENTOLOGY OF AN EARLY ARCHEAN FELSIC VOLCANIC SEQUENCE, EASTERN PILBARA BLOCK, WESTERN AUSTRALIA, WITH SPECIAL REFERENCE TO THE DUFFER FORMATION AND IMPLICATIONS FOR CRUSTAL EVOLUTION
PRECAMBRIAN RESEARCH
1989; 44 (2): 147-169
View details for Web of Science ID A1989AP11000004
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ENVIRONMENTAL-CONTROL ON DIVERSE STROMATOLITE MORPHOLOGIES IN THE 3000 MYR PONGOLA SUPERGROUP, SOUTH-AFRICA
SEDIMENTOLOGY
1989; 36 (3): 383-397
View details for Web of Science ID A1989AA98600001
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POLYTYPES OF 2-1 DIOCTAHEDRAL MICAS IN SILICIFIED VOLCANICLASTIC SANDSTONES, WARRAWOONA GROUP, PILBARA BLOCK, WESTERN-AUSTRALIA
AMERICAN JOURNAL OF SCIENCE
1989; 289 (5): 649-660
View details for Web of Science ID A1989U466500004
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GEOCHEMISTRY OF PRECAMBRIAN CARBONATES .1. ARCHEAN HYDROTHERMAL SYSTEMS
GEOCHIMICA ET COSMOCHIMICA ACTA
1989; 53 (4): 845-857
View details for Web of Science ID A1989U398100009
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GEOCHEMISTRY OF PRECAMBRIAN CARBONATES .2. ARCHEAN GREENSTONE BELTS AND ARCHEAN SEA-WATER
GEOCHIMICA ET COSMOCHIMICA ACTA
1989; 53 (4): 859-871
Abstract
Carbonate rocks with geological attributes of marine sediments are a minor component of the Archean greenstone belts. Despite their relative scarcity, these rocks are important because they record chemical and isotopic properties of coeval oceans. The greenstones containing such carbonates appear to cluster at approximately 2.8 +/- 0.2 and approximately 3.5 +/- 0.1 Ga ago. The samples for the younger group are from the Abitibi, Yellowknife, Wabigoon (Steep Rock Lake), Michipicoten and Uchi greenstone belts of Canada and the "Upper Greenstones" of Zimbabwe. The older group includes the Swaziland Supergroup of South Africa, Warrawoona Group of Australia and the Sargur marbles of India. Mineralogically, the carbonates of the younger greenstones are mostly limestones and of the older ones, ferroan dolomites (ankerites); the latter with some affinities to hydrothermal carbonates. In mineralized areas with iron ores, the carbonate minerals are siderite +/- ankerite, irrespective of the age of the greenstones. Iron-poor dolomites represent a later phase of carbonate generation, related to post-depositional tectonic faulting. The original mineralogy of limestone sequences appears to have been an Sr-rich aragonite. The Archean carbonates yield near-mantle Sr isotopic values, with (87Sr/86Sr)o of 0.7025 +/- 0.0015 and 0.7031 +/- 0.0008 for younger and older greenstones, respectively. The best preserved samples give delta 13C of +1.5 +/- 1.5% PDB, comparable to their Phanerozoic counterparts. In contrast, the best estimate for delta 18O is -7% PDB. Archean limestones, compared to Phanerozoic examples, are enriched in 16O as well as in Mn2+ and Fe2+, and these differences are not a consequence of post-depositional alteration phenomena. The mineralogical and chemical attributes of Archean carbonates (hence sea water) are consistent with the proposition that the composition of the coeval oceans may have been buffered by a pervasive interaction with the "mantle", that is, with the oceanic crust and the coeval ubiquitous volcanosedimentary piles derived from mantle sources.
View details for Web of Science ID A1989U398100010
View details for PubMedID 11539784
- SHELF SANDSTONES OF THE ROBULUS L ZONE, OFFSHORE LOUISIANA Gulf Coast Section SEPM, 7th Annual Research Conference . 1989: 117–141
- SUSPENDED-LOAD FALLOUT RATE AS AN INDEPENDENT VARIABLE IN THE ANALYSIS OF CURRENT STRUCTURES SEDIMENTOLOGY 1988; 35: 765-776
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TURBIDITY-CURRENT ACTIVITY IN A BRITISH-COLUMBIA FJORD
SCIENCE
1987; 237 (4820): 1330-1333
Abstract
A year-long monitoring program within an elongated channel-fan system in Bute Inlet of British Columbia, Canada, detected active sand-transporting turbidity currents. Measurements of bottom velocities and sediment collected in traps, as well as damage to moorings and equipment, captured the signatures of frequent energetic events. Maximum calculated velocities achieved were 335 centimeters per second, with flow thicknesses of more than 30 meters. Coarse sand was transported at least 6 to 7.5 meters above the sea floor. Turbidity currents flowed a minimum distance of 25.9 kilometers, but possibly as far as 40 to 50 kilometers, over bottom slopes of generally less than 1 degrees.
View details for Web of Science ID A1987J924400020
View details for PubMedID 17801471
- REPLY TO COMMENTS ON "EARLY ARCHEAN SILICATE SPHERULES OF PROBABLE IMPACT ORIGIN, SOUTH AFRICA AND WESTERN AUSTRALIA:" GEOLOGY 1987; 15: 179-182
- GEOMORPHOLOGY AND SEDIMENTOLOGY OF THE TORO AMARILLO ALLUVIAL FAN IN A HUMID TROPICAL ENVIRONMENT GEOGRAFISKA ANNALER 1987; 69A: 85-99
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ARCHEAN FLOW-TOP ALTERATION ZONES FORMED INITIALLY IN A LOW-TEMPERATURE SULFATE-RICH ENVIRONMENT
NATURE
1986; 324 (6094): 245-248
View details for Web of Science ID A1986E905600054
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EARLY ARCHEAN SILICATE SPHERULES OF PROBABLE IMPACT ORIGIN, SOUTH-AFRICA AND WESTERN AUSTRALIA
GEOLOGY
1986; 14 (1): 83-86
View details for Web of Science ID A1986AXZ7600021
- LAHARS INITIATED BY THE NOVEMBER 13, 1985, ERUPTION OF NEVADO DEL RUIZ, COLOMBIA NATURE 1986; 324: 51-53
- STROMATOLITES FROM THE 3,300-3,500-MYR SWAZILAND SUPERGROUP, BARBERTON MOUNTAIN LAND, SOUTH AFRICA NATURE 1986; 319: 489-491
- A PERMO-CARBONIFEROUS GLACIAL PAVEMENT AND RELATED KAROO ROCKS ALONG THE GHAAP ESCARPMENT NEAR BOETSAP, NORTHERN CAPE PROVINCE TRANSACTIONS OF THE GEOLOGICAL SOCIETY OF SOUTH AFRICA 1986; 89: 385-388
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STRATIGRAPHIC AND SEDIMENTOLOGICAL EVIDENCE BEARING ON STRUCTURAL REPETITION IN EARLY ARCHEAN ROCKS OF THE BARBERTON GREENSTONE-BELT, SOUTH-AFRICA
PRECAMBRIAN RESEARCH
1985; 27: 165-186
View details for Web of Science ID A1985AEG8000010
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FILAMENTOUS MICROFOSSILS FROM THE 3,500-MYR-OLD ONVERWACHT GROUP, BARBERTON MOUNTAIN LAND, SOUTH-AFRICA
NATURE
1985; 314 (6011): 530-532
View details for Web of Science ID A1985AFC1700038
- SEDIMENTARY ENVIRONMENT AS A CONTROL ON THE FORMATION AND PRESERVATION OF ARCHEAN VOLCANOGENIC MASSIVE SULPHIDE DEPOSITS Evolution of Archean Supracrustal Sequences Geological Association of Canada Spec. Paper 28 . 1985: 193–201
- FILAMENTOUS MICROFOSSILS FROM THE 3,500 MILLION YEAR OLD ONVERWACHT GROUP, BARBERTON MOUNTAINLAND, SOUTH AFRICA NAURE 1985; 314: 530-532
- OUACHITA TROUGH: PART OF A CAMBRIAN FAILED RIFT SYSTEM GEOLOGY 1985: 790-793
- RESTRICTED SHALLOW WATER SEDIMENTATION OF 3.4 BYR-OLD STROMATOLITIC AND EVAPORITIC STRATA OF THE STRELLEY POOL CHERT, PILBARA BLOCK, WESTERN AUSTRALIA PRECAMBRIAN RES. 1983: 239-283
- SEDIMENTOLOGY OF THE MIDDLE MARKER (3.4 GA), ONVERWACHT GROUP, TRANSVAAL, SOUTH AFRICA PRECAMBRIAN RES. 1982: 237-260
- SEDIMENT GRAVITY FLOWS II: DEPOSITIONAL MODELS WITH SPECIAL REFERENCE TO THE DEPOSITS OF HIGH-DENSITY TURBIDITY CURRENTS JOURNAL OF SEDIMENTARY PETROLOGY 1982: 279-297
- COMPARATIVE SEDIMENTOLOGY OF THE PRINCIPAL VOLCANIC SEQUENCES OF ARCHEAN GREENSTONE BELTS IN SOUTH AFRICA, WESTERN AUSTRALIA AND CANADA PRECAMBRIAN RESEARCH 1982: 1-29
- DIFFUSION OF SEDIMENT ON THE LEE OF DUNE-LIKE BEDFORMS: THEORETICAL AND NUMERICAL ANALYSIS SEDIMENTOLOGY 1981; 28: 531-545
- STROMATOLITES 3,400-MYR OLD FROM THE ARCHEAN OF WESTERN AUSTRALIA NATURE 1980; 284: 441-443
- ARCHEAN SEDIMENTATION ANNUAL REVIEW OF EARTH AND PLANETARY SCIENCES 1980; 8: 145-167
- SEDIMENT GRAVITY FLOWS: THEIR CLASSIFICATION AND PROBLEMS OF APPLICATION TO NATURAL FLOWS AND DEPOSITS SEPM SPECIAL PUBLICATION 27 1979: 75-82
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OLDEST MARINE CARBONATE OOIDS REINTERPRETED AS VOLCANIC ACCRETIONARY LAPILLI, ONVERWACHT GROUP, SOUTH-AFRICA - REPLY
JOURNAL OF SEDIMENTARY PETROLOGY
1979; 49 (2): 664-666
View details for Web of Science ID A1979HC63500038
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OXYGEN ISOTOPE GEOCHEMISTRY OF CHERTS FROM ONVERWACHT GROUP (3.4 BILLION YEARS), TRANSVAAL, SOUTH-AFRICA, WITH IMPLICATIONS FOR SECULAR VARIATIONS IN ISOTOPIC COMPOSITION OF CHERTS
EARTH AND PLANETARY SCIENCE LETTERS
1978; 41 (2): 209-222
View details for Web of Science ID A1978FW04500011
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OLDEST MARINE CARBONATE OOIDS REINTERPRETED AS VOLCANIC ACCRETIONARY LAPILLI ONVERWACHT GROUP, SOUTH-AFRICA
JOURNAL OF SEDIMENTARY PETROLOGY
1978; 48 (3): 709-722
View details for Web of Science ID A1978FR91300002
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SEDIMENTOLOGY OF ONVERWACHT GROUP (3.4 BILLION YEARS), TRANSVAAL, SOUTH-AFRICA, AND ITS BEARING ON CHARACTERISTICS AND EVOLUTION OF EARLY EARTH
JOURNAL OF GEOLOGY
1977; 85 (6): 699-723
View details for Web of Science ID A1977EA66700002
- THE ARKANSAS NOVACULITE: SOME ASPECTS OF ITS PHYSICAL SEDIMENTATION: Symposium on the Geology of the Ouachita Mountains Arkansas Geological Commission. 1977: 132–138
- NONGLACIAL VARVES IN THE LOWER MEMBER OF ARKANSAS NOVACULITE (DEVONIAN), ARKANSAS AND OKLAHOMA AMERICAN ASSOCIATION OF PETROLEUM GEOLOGISTS BULLETIN 1976; 60: 2103-2116
- SUBAQUEOUS LIQUEFIED AND FLUIDIZED FLOWS AND THEIR DEPOSITS SEDIMENTOLOGY 1976; 23: 285-308
- GRAIN FLOW AND GRAIN FLOW DEPOSITS JOURNAL OF SEDIMENTARY PETROLOGY 1976; 46: 188-199
- REGIONAL CONTROLS ON SILICA SEDIMENTATION IN THE OUACHITA SYSTEM GEOLOGICAL SOCIETY OF AMERICA BULLETIN 1975; 86: 1123-1127
- WATER ESCAPE STRUCTURES IN COARSE-GRAINED SEDIMENTS SEDIMENTOLOGY 1975; 46: 157-204
- CHARACTERISTICS AND ORIGINS OF DISH AND PILLAR STRUCTURES JOURNAL OF SEDIMENTARY PETROLOGY 1974; 44: 484-501
- IMPLICATIONS OF THREE SUBMARINE MASS-MOVEMENT DEPOSITS, CRETACEOUS, SACRAMENTO VALLEY, CALIFORNIA JOURNAL OF SEDIMENTARY PETROLOGY 1972; 42: 89-101
- STRATIGRAPHIC RELATIONS OF PHOSPHATE- AND GYPSUM-BEARING UPPER MIOCENE STRATA, UPPER SESPE CREEK, VENTURA COUNTY, CALIFORNIA AMERICAN ASSOCIATION OF PETROLEUM GEOLOGISTS BULLETIN 1966; 50: 2464-2481