School of Earth, Energy and Environmental Sciences
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Professor (Research) of Geological and Environmental Sciences, Emeritus
Current Research and Scholarly InterestsFormation, geometric patterns and fluid flow properties of fractures and faults in a broad range of scales.
Professor of Geological Sciences, Emeritus
Current Research and Scholarly InterestsTheoretical geochemistry of reactions among aqueous solutions and minerals in magma-hydrothermal systems; environmental geochemistry of toxic metals in the Mother Lode Gold region, CA, and the emergence of life in the aftermath of the Moon-forming impact, ca. 4.4Ga.
Professor of Geological Sciences
Current Research and Scholarly InterestsPaleontology/Geobiology; Fossil record of plant physiology and development; Evolution of terrestrial ecosystems including fungi, animals, and environmental feedbacks with the biota
Dorrell William Kirby Professor of Geology in the School of Earth Sciences, Emeritus
Current Research and Scholarly InterestsSurface and interface geochemistry; environmental fate of heavy metals; nanotechnology, applications of synchrotron radiation in geochemistry and mineralogy
Physical Sci Res Scientist
BioI manage the Stanford Mineral and Microchemical Analysis Facility. My primary responsibilities include developing and testing procedures for measuring major and trace element concentrations in a variety of solid materials, working with Stanford researchers (and external users) to design experiments and collect, interpret, and publish data, and overseeing the long-term development and trajectory of the Mineral and Microchemical Analysis Facility both within the Stanford School of Earth, Energy, and Environmental Sciences and in the greater Stanford community.
Professor of Geological Sciences
Current Research and Scholarly InterestsMy research focuses on the exploration & exploitation of geological resources, from data acquisition to decision making under uncertainty and risk assessment.
Professor of Geological Sciences
Current Research and Scholarly InterestsResearch
I use stable and radiogenic isotopes to understand Earth system history. These studies examine the link between climate, tectonics, biological, and surface processes. Projects include: 1) examining the terrestrial climate history of the Earth focusing on periods of time in the past that had CO 2-levels similar to the present and to future projections; and 2) addressing how the chemical weathering of the Earth's crust affects both the long- and short-term carbon cycle. Field areas for these studies are in the Cascades, Rocky Mountains, Sierra Nevada, the European Alps, Tibet and the Himalaya and the Southern Alps of New Zealand.
Much of the research that I do has an international component. Specifically, I have collaborations with: 1) the Senckenberg Biodiversity and Climate Research Center in Frankfurt Germany as a Humboldt Fellow and 2) the Chinese University of Geosciences in Bejiing China where I collaborate with Professor Yuan Gao.
I teach courses at the undergraduate and graduate level in isotope biogeochemistry, Earth system history, and the relationship between climate, surface processes and tectonics.
Editor American Journal of Science; Co-Director Stanford Stable Isotope Biogeochemistry Laboratory (present);Chair, Department of Geological and Environmental Sciences (2004-07); Co-Director Stanford/USGS SHRIMP Ion microprobe facility (2001-04)
Phys Sci Res Assoc, Geological Sciences
BioFrom 2012 until 2019, I co-managed the SHRIMP-RG ion-microprobe at Stanford University. I oversaw operation of the laboratories and work closely with Stanford scientists, students, and visiting scientists to undertake measurements on the SHRIMP-RG. This includes training users in SIMS methods, assisting with sample preparation/characterization, data acquisition, reduction, interpretation, and publication of results. I also contribute to the development and refinement of new techniques and standard development efforts on the SHRIMP-RG.
My research focuses on understanding the timescales of magmatic processes and the sources of crystal diversity in magmatic systems. To accomplish this, I use radiometric dating (238U-230Th, 238U-206Pb, 40Ar-39Ar, and U-Th/He) and chemical analysis of minerals to investigate the temporal and compositional history of magmas. I integrate these results to better understand how magmas evolved in the crust leading up to eruption, and the geology of these deposits exposed on Earth’s surface today. The methods I utilize involve electron microprobe (EMP), secondary ion mass spectrometry (SIMS), nanoSIMS, and inductively coupled plasma mass spectrometry (ICP-MS).
One of the exciting and challenging components of my research is finding analytical techniques to answer complicated petrogenetic questions. To do this, one of the main tools I employ is the high spatial resolution of SIMS in order to measure trace elements and isotopic ages simultaneously, often in-situ, from the same analyte volume (~4 ng). Additionally, using the relatively slow sputter rate of the SIMS method (10’s of nm/min), I have applied this approach to depth profiling into fresh, unpolished mineral surfaces to target the last phase of mineral growth. This have been extremely useful for dating zircons with complicated histories. For example, I have been working on radiometrically dating geologically young volcanic zircons (Quaternary in age) where the outermost micron of grain yields crystallization ages that agree with Ar-Ar and U-Th/He eruption ages, whereas the interiors contain older inherited portions of the grains. Another example is applying this technique to dating thing (<2 micron) metaphoric rims surround an older protolith core, which would be impossible to analyze using traditional techniques of polishing zircon to expose the interiors of the grains.
Please visit https://shrimprg.stanford.edu/ for more information about the SHRIMP-RG and SIMS.
I have recently moved to Wellington, New Zealand. However, I remain actively involved in numerous on-gong projects at Stanford University and in the SHRIMP- RG lab as a consulting scientist. Please contact me using my stanford.edu or gmail accounts if you have question about previous or ongoing research projects.
Welton Joseph and Maud L'Anphere Crook Professor of Applied Earth Sciences, Emeritus
Current Research and Scholarly InterestsOre deposits and exploration; geology and geochemistry of hydrothermal mineral deposits
W Gary Ernst
The Benjamin M. Page Professor in Earth Sciences, Emeritus
Current Research and Scholarly InterestsPetrology/geochemistry and plate tectonics of Circumpacific and Alpine mobile belts; ultrahigh-pressure metamorphism in Eurasia; geology of the California Coast Ranges, the cental Klamath Mountains, and White-Inyo Range; geobotany and remote sensing of the American Southwest; mineralogy and human health.
Frank Stanton Professor in Nuclear Security, Senior Fellow at the Freeman Spogli Institute for International Studies and at the Precourt Institute for Energy
BioRod Ewing is the Frank Stanton Professor in Nuclear Security in the Center for International Security and Cooperation in the Freeman Spogli Institute for International Studies and a Professor in the Department of Geological Sciences in the School of Earth, Energy and Environmental Sciences at Stanford University. He is the Edward H. Kraus Distinguished University Professor Emeritus at the University of Michigan, where he was in three Departments: Earth & Environmental Sciences, Nuclear Engineering & Radiological Sciences, and Materials Science and Engineering. He is also a Regents' Emeritus Professor at the University of New Mexico.
Ewing received a B.S. degree in geology from Texas Christian University (1968, summa cum laude) and M.S. (l972) and Ph.D. (l974, with distinction) degrees from Stanford University where he held an NSF Fellowship. His graduate studies focused on an esoteric group of minerals, metamict Nb-Ta-Ti oxides, which are unusual because they have become amorphous due to radiation damage caused by the presence of radioactive elements. Over the past forty years, the early study of these unusual minerals has blossomed into a broadly based research program on radiation effects in complex ceramic materials. This has led to the development of techniques to predict the long-term behavior of materials, such as those used in radioactive waste disposal. He is the author or co-author of over 750 research publications and the editor or co-editor of 18 monographs, proceedings volumes or special issues of journals. He has published widely in mineralogy, geochemistry, materials science, nuclear materials, physics and chemistry in over 100 different ISI journals. He has been granted a patent for the development of a highly durable material for the immobilization of excess weapons plutonium.
Ewing has received the Hawley Medal of the Mineralogical Association of Canada in 1997 and 2002, a Guggenheim Fellowship in 2002, the Dana Medal of the Mineralogical Society of America in 2006, the Lomonosov Gold Medal of the Russian Academy of Sciences in 2006, a Honorary Doctorate from the Université Pierre et Marie Curie in 2007, Roebling Medal of the Mineralogical Society of America, and is a foreign Fellow of the Royal Society of Canada. He is also a fellow of the Geological Society of America, Mineralogical Society of America, American Geophysical Union, Geochemical Society and the European Association of Geochemistry, American Ceramic Society, the American Association for the Advancement of Science, Mineralogical Society of Great Britain and Ireland, and the Materials Research Society. He was elected to the National Academy of Engineering in 2017.
He has been president of the Mineralogical Society of America (2002) and the International Union of Materials Research Societies (1997-1998). Ewing has served on the Board of Directors of the Geochemical Society (2012-2015) and the Board of Governors of the Gemological Institute of America (2006-2015). He is a member of the Science and Security Board of the Bulletin of the Atomic Scientists and on the Editorial Board of Applied Physics Reviews . He is a founding Editor of the magazine Elements, which is now supported by 17 earth science societies, and a Founding Executive Editor of Geochemical Perspective Letters. He is a member of the Board of Earth Sciences and Resources of the National Academy of Science, Engineering and Medicine (2017-2020).
Professor Ewing is co-editor of and a contributing author of Radioactive Waste Forms for the Future (North-Holland Physics, Amsterdam, 1988) and Uncertainty Underground – Yucca Mountain and the Nation’s High-Level Nuclear Waste (MIT Press, 2006). He has served on eleven National Research Council committees for the National Academy of Sciences that have reviewed issues related to nuclear waste and nuclear weapons. He was appointed by President Obama to Chair the Nuclear Waste Technical Review Board (2012-2017).
Chester Naramore Dean of the School of Earth, Energy & Environmental Sciences, Welton Joseph and Maud L'Anphere Crook Professor and Professor, by courtesy, of Geophysics and of Energy Resources Engineering
Current Research and Scholarly InterestsSedimentary basin analysis; petroleum geology
Professor (Research) of Geological Sciences
Current Research and Scholarly InterestsResearch
I study the evolution of the Earth's crust by undertaking petrologic and geochemically-based research that is grounded with fieldwork. I co-direct the Stanford-USGS ion probe laboratory and develop geochronologic methods to constrain crystallization, metamorphic, and metasomatic histories of the middle to deep crust. Similarly, because heat flow characteristically attends mass transfer during crustal deformation, I employ 40Ar/39Ar and (U-Th)/He thermochronology to extract thermal history information from minerals to constrain the timing and magnitude of fault slip as well as erosional and tectonic denudation. Finally, I am heavily involved in provenance studies to constrain aspects of crustal deformation and erosion that are only preserved in the sedimentary record.
Paul S. and Billie Achilles Professor in Environmental Biology, Senior Fellow at the Woods Institute for the Environment and Professor, by courtesy, of Geological Sciences
Current Research and Scholarly InterestsElizabeth Hadly and her lab probe how perturbations such as climatic change and human modification of the environment influence the evolution and ecology of animals.
Professor of Geological Sciences
Current Research and Scholarly InterestsActive tectonics, quantitative structural geology and geomorphology; Geographic Information Systems;unsaturated zone gas transport; landscape development;active deformation and mountain belt growth in central Asia, central Andes, and along the San Andreas Fault; integrated investigation of earthquake hazards.
James C. Ingle, Jr.
The W. M. Keck Professor of Earth Sciences, Emeritus
Current Research and Scholarly InterestsCurrent research interests include the Neogene stratigraphy, paleoceanography, and depositional history of marine basins and continental margins of the Pacific Ocean with a focus on the California borderland and Gulf of California. Other interests involve study of marine diatomaceous sediments, the sedimentary record of the oxygen minimum zone, and application of benthic and planktonic foraminifera to questions surrounding the history of the global ocean and climate change.
Professor of Geophysics and, by courtesy, of Geological Sciences
Current Research and Scholarly InterestsI study the growth, tectonic evolution, and deformation of the continents. My research group undertakes field experiments in exemplary areas such as, currently, the Tibet plateau (formed by collision between Indian and Asia); the actively extending Basin-&-Range province of western North America (the Ruby Range Metamorphic Core Complex, NV, and the leaky transform beneath the Salton Trough, CA). We use active and passive seismic methods, electromagnetic recording, and all other available data!
Assistant Professor of Geological Sciences and, by courtesy, of Geophysics
BioProf. Lapôtre leads the Earth & Planetary Surface Processes group. His research focuses on the physics behind sedimentary and geomorphic processes that shape planetary surfaces (including Earth's), and aims to untangle what landforms and rocks tell us about the past hydrology, climate, and habitability of planets.