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Pitangui greenstone belt records the geologic evolution of an ancient oceanic basin where metasedimentary intervals of BIFs and turbidites represent moments of quiescence in volcanic activity.

To learn more or modify/prevent the use of cookies, see our Cookie Policy and Privacy Policy.In the modern ocean, ~80 to 90% of primary productivity gets remineralized in the photic zone (upper, ~200 m; fig.S1), with most of the remainder being oxidized at depth or in marine sediments ().This recycling increases the residence time of P in the ocean.As water masses mature in the deep ocean, they accumulate nutrients regenerated through biomass recycling and ultimately deliver these nutrients to the continental shelves via upwelling, enabling high rates of biological productivity.

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