Steve
Most interesting to me would be ocean-geo carbon ‘cycles’. The carbon cycle is a small part of a much bigger picture – carbon exit from the mantle, into the ocean, then into sediments, then much of it ending up in the continents as carbonate rock and organics, about 80% / 20%. The rest gets subducted and either comes out in volcanos or goes round again in the mantle.
A tall order for a whole chapter, I know.
But my takeaway: The ocean has always been Earth’s primary carbon sink at least initially. The eventual main sink is as continental rock.
Clive
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