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Thursday 27 January 2022, 15:00-16:00
Reconstructing CO2 change on 100 to 100 million year timescales
- 👤 Speaker: James Rae, University of St. Andrews 🔗 Website
- 📅 Date & Time: Thursday 27 January 2022, 15:00 - 16:00
- 📍 Venue: Department of Earth Sciences, Tilley Lecture Theatre
Abstract
CO2 change amplified the ice ages of the Quaternary, drove global cooling through the Cenozoic, and may have contributed to mass extinctions. However our records of how – and why – CO2 changed through Earth’s history are still relatively uncertain and incomplete. In this seminar I present recent progress in CO2 reconstruction using boron isotopes. The appeal of this method lies in its grounding in simple acid-base equilibria, but there are a range of interesting challenges in its application to the geological record. Here I will outline our current understanding of the boron isotope proxy and show examples of its application to the ice ages, Cenozoic cooling, climate sensitivity, and changes in ocean chemistry associated with mass extinctions.
Series This talk is part of the Department of Earth Sciences Seminars (downtown) series.
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