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I study how Earth's crust and mantle evolve over time using a variety of quantitative geochemical and geochronologic techniques. My research interests include ancient mantle domains, radiogenic heating in the crust, continental collision zones, and geobiological feedbacks.

Contact me if you are interested in research opportunities or collaboration. I am enthusiastic about working with scientists at all levels!

News and Highlights


Are high 3He/4He ratios in intraplate lavas derived from solar nebula preserved in Earth's core?


Our paper in Nature reports the highest magmatic 3He/4He yet found in terrestrial rocks. Find out why we think that helium in Baffin Island lavas and elsewhere might be coming from Earth's core.

Are high 3He/4He ratios in intraplate lavas derived from solar nebula preserved in Earth's core?

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We are assessing helium isotope variability in recent volcanic eruptions to determine whether helium might inform volcanic hazard forecasts. See this Oceanus article for details.

In collaboration with Pete Barry and Marc-Antoine Longpré

Can helium isotopes in lavas inform volcanic hazard forecasts?

Deeply subducted seafloor sediments of the Indus Fan melted, ascended as magmas, and erupted in southern Afghanistan. 

See my paper in Nature Geoscience about the discovery of the first subduction zone carbonatite volcano. Seafloor sediments that are carbon-rich can subduct into Earth's mantle and then return to the surface to form volcanoes formed primarily of carbonate minerals. See Nature Reviews Earth & Environment for a research highlight.

Successful 2018 field season on Baffin Island!

Paul Asimow, Joe Biasi, and I had an adventurous field season in the Arctic Circle in August, 2018. We explored the high 3He/4He lavas that erupted as Greenland and Canada rifted apart. These rocks potentially hold clues about the deepest, oldest domains in Earth's mantle.


Click here to learn more about this research.


Department of Geology & Geophysics

Woods Hole Oceanographic Institution

360 Woods Hole Rd, MS #08
Woods Hole, MA 02543 USA


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