Department Seminar - Alexis Templeton

Apr 18, 2023, 12:30 pm1:20 pm
Guyot Hall 10
All Welcome



Event Description

Ultramafic rocks are unstable in the presence of water near the Earth’s surface, and can produce abundant energy sources such as hydrogen and methane where there is sufficient fluid circulation. In the near future, these rocks will become intensive targets for “stimulated hydrogen production” in efforts to harness hydrogen as a clean energy source and move towards a decarbonized economy.  These ultramafic rocks also host abundant microbial communities that actively consume hydrogen, despite the harsh physiochemical conditions, such as a lack of dissolved oxidants, inorganic carbon and hyperalkaline pH that develop during extensive water/rock reaction.  In this talk I will share perspectives on the importance of ultramafic rocks as geochemical reactors and as microbial habitats, drawing on new insights gleaned from subsurface investigations in the Samail ophiolite in Oman.


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