Ayla joined the Geological Sciences department as an Assistant Professor in Fall 2019. In 2006, she received her B.S. in Geophysical Sciences and a minor in Near Eastern Languages and Civilizations at the University of Chicago. She then spent a year in Turkey as a Fulbright Scholar studying geoarchaeology and then as a research assistant continuing her undergraduate research on supereruptions at the University of Chicago. From 2008-2014, she attended graduate school in the Department of Earth and Environmental Sciences at Vanderbilt University, where she studied the evolution and eruption of supereruptive magmas. She was awarded her M.S. and Ph.D. degrees in 2010 and 2014, respectively. She then held several postdoc positions, expanding her research into new areas as a postdoctoral scholar at Brown University, studying magmas using high-temperature and high-pressure experiments, as a Harry Hess Postdoctoral Fellow at Princeton University, studying links between extrusive and intrusive magmas using zircon geochronology, and as a postdoctoral investigator at the Woods Hole Oceanograhic Institution, studying ascent rates of Antarctic basanites using diffusive water loss from olivine-hosted melt inclusions.
Honors & Awards
Harry Hess Postdoctoral Fellowship, Princeton University (2015-2017)
Teaching Certificate, Vanderbilt University Center for Teaching (2010)
Teaching-As-Research (TAR) Fellowship, Vanderbilt University Center for Teaching (2009)
Fulbright Scholar (Turkey), Fulbright (2006)
REU, American Museum of Natural History (2005)
Foreign Language Acquisition Grant, University of Chicago (2004)
Ph.D., Vanderbilt University, Environmental Engineering (Earth and Environmental Sciences option) (2014)
M.S., Vanderbilt University, Earth and Environmental Sciences (2010)
B.S., University of Chicago, Geophysical Sciences (2006)
Minor, University of Chicago, Near Eastern Languages and Civilizations (2006)
Current Research and Scholarly Interests
I have long been fascinated by magmas and volcanic eruptions, for reasons ranging from purely academic (trying to understand the magmatic construction of Earth’s crust) to purely practical (developing effective monitoring and mitigation strategies for volcanic eruptions). Consequently, my research revolves around understanding how, when, where, and why magmas are stored, evolve, and ultimately do (or do not!) erupt.
Within this context, I focus on two main themes: (1) the temporal, chemical, and physical, evolution of magmas, and (2) the interplay between magma storage conditions in the crust and magmatic processes. I employ a multi-faceted approach to explore these topics, integrating data from multiple scales and perspectives; my studies capitalize on information contained in field relations, crystal and melt inclusion textures (sizes, shapes, positions), crystal and volcanic glass geochemistry, geochronology, phase-equilibria and numerical modeling, and experiments. As a function of this approach, I am also engaged in the development of novel methods to address petrologic problems in new, better, and more refined ways than is currently possible.
A major focus of my research has been on supereruptions – gigantic explosive eruptions the likes of which we have never seen in recorded human history – but I am continually exploring other kinds of magmatic systems. I am currently particularly interested in the links (or lack thereof) between extrusive (i.e., erupted) and intrusive (i.e., unerupted) magmas, similarities/differences between large- and small-volume eruptions, and similarities/differences between magmas generated at different levels of the crust. I have also had a longstanding interest in the interactions and relationships between humans and their geologic surroundings (particularly volcanoes).
- Constraints on the timescales and processes that led to high-SiO2 rhyolite production in the Searchlight pluton, Nevada, USA GEOSPHERE 2022; 18 (3): 1000-1019
- Rhyolite-MELTS and the storage and extraction of large-volume crystal-poor rhyolitic melts at the Taupo Volcanic Center: a reply to Wilson et al. (2021) CONTRIBUTIONS TO MINERALOGY AND PETROLOGY 2021; 176 (10)
- New Ti-in-quartz diffusivities reconcile natural Ti zoning with time scales and temperatures of upper crustal magma reservoirs GEOLOGY 2020; 48 (12): E513
- Magma residence and eruption at the Taupo Volcanic Center (Taupo Volcanic Zone, New Zealand): insights from rhyolite-MELTS geobarometry, diffusion chronometry, and crystal textures CONTRIBUTIONS TO MINERALOGY AND PETROLOGY 2020; 175 (5)
Rhyolite-MELTS vs. DERP – Newer Does Not Make it Better: a Comment on “The Effect of Anorthite Content and Water on Quartz–Feldspar Cotectic Compositions in the Rhyolitic System and Implications for Geobarometry” by Wilke et al. (2017; Journal of Petrology, 58, No. 4, 789–818)
JOURNAL OF PETROLOGY
View details for DOI 10.1093/petrology/egz003
Climbing the crustal ladder: Magma storage-depth evolution during a volcanic flare-up
2018; 4 (10): eaap7567
Very large eruptions (>50 km3) and supereruptions (>450 km3) reveal Earth's capacity to produce and store enormous quantities (>1000 km3) of crystal-poor, eruptible magma in the shallow crust. We explore the interplay between crustal evolution and volcanism during a volcanic flare-up in the Taupo Volcanic Zone (TVZ, New Zealand) using a combination of quartz-feldspar-melt equilibration pressures and time scales of quartz crystallization. Over the course of the flare-up, crystallization depths became progressively shallower, showing the gradual conditioning of the crust. Yet, quartz crystallization times were invariably very short (<100 years), demonstrating that very large reservoirs of eruptible magma were transient crustal features. We conclude that the dynamic nature of the TVZ crust favored magma eruption over storage. Episodic tapping of eruptible magmas likely prevented a supereruption. Instead, multiple very large bodies of eruptible magma were assembled and erupted in decadal time scales.
View details for DOI 10.1126/sciadv.aap7567
View details for Web of Science ID 000449221200003
View details for PubMedID 30324132
View details for PubMedCentralID PMC6179376
- High-Ti, bright-CL rims in volcanic quartz: a result of very rapid growth CONTRIBUTIONS TO MINERALOGY AND PETROLOGY 2016; 171 (12)
- Melt inclusion shapes: Timekeepers of short-lived giant magma bodies GEOLOGY 2015; 43 (11): 947–50
- Phase-equilibrium geobarometers for silicic rocks based on rhyolite-MELTS-Part 3: Application to the Peach Spring Tuff (Arizona-California-Nevada, USA) CONTRIBUTIONS TO MINERALOGY AND PETROLOGY 2015; 169 (3)
- Phase-equilibrium geobarometers for silicic rocks based on rhyolite-MELTS. Part 2: application to Taupo Volcanic Zone rhyolites CONTRIBUTIONS TO MINERALOGY AND PETROLOGY 2014; 168 (5)
- Quantitative 3D petrography using X-ray tomography 4: Assessing glass inclusion textures with propagation phase-contrast tomography GEOSPHERE 2013; 9 (6): 1704–13
- The Evolution of the Peach Spring Giant Magma Body: Evidence from Accessory Mineral Textures and Compositions, Bulk Pumice and Glass Geochemistry, and Rhyolite-MELTS Modeling JOURNAL OF PETROLOGY 2013; 54 (6): 1109–48
Timescales of Quartz Crystallization and the Longevity of the Bishop Giant Magma Body
2012; 7 (5): e37492
Supereruptions violently transfer huge amounts (100 s-1000 s km(3)) of magma to the surface in a matter of days and testify to the existence of giant pools of magma at depth. The longevity of these giant magma bodies is of significant scientific and societal interest. Radiometric data on whole rocks, glasses, feldspar and zircon crystals have been used to suggest that the Bishop Tuff giant magma body, which erupted ~760,000 years ago and created the Long Valley caldera (California), was long-lived (>100,000 years) and evolved rather slowly. In this work, we present four lines of evidence to constrain the timescales of crystallization of the Bishop magma body: (1) quartz residence times based on diffusional relaxation of Ti profiles, (2) quartz residence times based on the kinetics of faceting of melt inclusions, (3) quartz and feldspar crystallization times derived using quartz+feldspar crystal size distributions, and (4) timescales of cooling and crystallization based on thermodynamic and heat flow modeling. All of our estimates suggest quartz crystallization on timescales of <10,000 years, more typically within 500-3,000 years before eruption. We conclude that large-volume, crystal-poor magma bodies are ephemeral features that, once established, evolve on millennial timescales. We also suggest that zircon crystals, rather than recording the timescales of crystallization of a large pool of crystal-poor magma, record the extended periods of time necessary for maturation of the crust and establishment of these giant magma bodies.
View details for DOI 10.1371/journal.pone.0037492
View details for Web of Science ID 000305353400028
View details for PubMedID 22666359
View details for PubMedCentralID PMC3364253
- Crystallization Stages of the Bishop Tuff Magma Body Recorded in Crystal Textures in Pumice Clasts JOURNAL OF PETROLOGY 2012; 53 (3): 589–609
- Quantitative 3D petrography using X-ray tomography 2: Combining information at various resolutions GEOSPHERE 2010; 6 (6): 775–81
- Quantitative 3D petrography using X-ray tomography 3: Documenting accessory phases with differential absorption tomography GEOSPHERE 2010; 6 (6): 782–92