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Paleoceanographer and geochemist interested in ocean redox | Postdoc at WHOI | foraminifera | she/they 🏳️‍🌈
Anya Hess
5mo
We have a new preprint, led by @petrash.bsky.social, using wicked electrochemistry and really nifty microscopy to look at how manganese redox cycling and carboxyl groups play into the formation of protodolomite. 🧪⚒️ eartharxiv.org/repository/v...
Progression of deoxygenation also differed. After the warm period, the Arabian Sea lost oxygen over 2.5 Myr, with delayed onset of denitrification compared to the Pacific.
 The lag points to regional drivers in the Arabian Sea, like (proto)monsoonal activity and Tethys outflow.
4mo