Zircons reveal the history of fluctuations in oxidation state of crustal magmatism and supercontinent cycle (IMAGE)
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Zircons, a mineral nearly as old as Earth itself, is a time keeper, and also provides a chemical window into many geological phenomena, such as oxidation state. By determining the oxidation levels of the magmas that formed these detrital zircons, scientists are able to deduce the onset of crust to mantle recycling, weathering, and the supercontinent cycle.
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