Oxic sediments contain 6,800 Pg organic C. Encouragingly, this is similar to @emmoxiely ‘s estimate of 6,700 Pg C. It might sound like a lot - but in fact it’s less than 5% of all the POC stored in Quaternary subseafloor sediment https://t.co/3WbVv7q3XR
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The persistence of organic matter in marine sediments can be due to 1) The dissolution of aluminium from clay minerals and its toxicity to the microbes; 2) Adsorption of organic molecules onto the edges of the mineral surfaces that affect their reactivity
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RT @chloerophyll_a: Check yo' carbon reservoirs before you wreck yo' carbon reservoirs. New paper by @emmoxiely investigating organic car…
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RT @SedGeoChem: Cool new study in @NatureGeosci by @emmoxiely, @ScottWankel ,@RadicalMicrobe, and others on organic matter preservation and…