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Contact: Dr. Patrick Meistser

Drilling Core

Caption: This shows a light yellow lamina of dolomite within dark mud of siliceous algae (diatoms). Such dolomite layers, which may contain also barite and enrichments of archaeol, indicate the depths of ancient sulphate-methane transition zones.

Credit: MPI for Marine Microbiology

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Related news release: How climate change affects microbial life below the seafloor

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