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Chemical Geology paper about the formation processes of post-glacial microbialites in coral reefs of the Pacific, Atlantic, and Indian Oceans

The occurrence of microbialites in post-glacial coral reefs has been interpreted to reflect an ecosystem response to environmental change.

Using lipid biomarkers and stable sulfur isotopes in reef-microbialites from Tahiti, Vanuatu (both volcanic islands), Belize (non-volcanic), and the Maldives (non-volcanic) it is shown that sulfate-reducing bacteria played an intrinsic role in the precipitation of microbial carbonate at all study sites, irrespective of the geological setting. Yet, detrital input derived from the weathering of volcanic rocks appears to be a natural fertilizer, being conductive for the growth of microbial mats, which foster the development of particularly abundant and thick microbial crusts at Tahiti and Vanuatu.

Katrin Heindel, Daniel Birgel, Benjamin Brunner, Volker Thiel, Hildegard Westphal, Eberhard Gischler, Simone B. Ziegenbalg, Guy Cabioch, Peter Sjövall, Jörn Peckmann, 2012, Post-glacial microbialite formation in coral reefs of the Pacific, Atlantic, and Indian Oceans: Chemical Geology, v. 304-305, p. 117–130.

Link to the article: www.sciencedirect.com/science/journal/00092541/304-305

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