Sarah published a paper about titanium isotopes in Earth's oldest known rocks! The data tell us about the composition and evolution of Earth’s emerged lands through time, and how wet magmatism was occurring ~3.75 Ga. Read the news story here.
The Acasta Gneiss Complex in Canada is home to Earth’s oldest known rocks, at 4.02 billion years old (Picture courtesy of co-author Prof. Jesse Reimink, Penn State University)
We co-authored another study using a multi-isotope (iron, titanium, and chromium) approach to understand continental weathering and redox conditions in a 2.95 Ga paleosol.
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