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- W2938243451 endingPage "8755" @default.
- W2938243451 startingPage "8746" @default.
- W2938243451 abstract "Significance Igneous island arc rocks are more oxidized than midocean-ridge basalts. Whether this originates from an oxidized mantle source or during differentiation or eruption is debated. Newly compiled Fe 3+ /ΣFe and V/Sc ratios presented here indicate that island arc rocks became more oxidized 800–400 Ma. We attribute this increase in the redox state of island arc rocks to the oxidation of their mantle source from subduction of oxidized oceanic crust following deep-ocean oxygenation and increased marine sulfate concentrations over the same time interval. This provides evidence that the oxidized nature of modern island arc magmas is due to an oxidized mantle source and represents a rare example of a change in the surface biogeochemistry influencing the igneous rock record." @default.
- W2938243451 created "2019-04-25" @default.
- W2938243451 creator A5017713485 @default.
- W2938243451 creator A5084745233 @default.
- W2938243451 date "2019-04-11" @default.
- W2938243451 modified "2023-10-10" @default.
- W2938243451 title "Neoproterozoic to early Phanerozoic rise in island arc redox state due to deep ocean oxygenation and increased marine sulfate levels" @default.
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