New study challenges mantle oxidation theory

New study challenges mantle oxidation theory

A thin slice of ancient rock taken from Gakkel Ridge near the North Pole, photographed under a microscope and viewed under cross-polarized light. Width of field ~14 mm. Thin-section rock analysis helps geologists identify and characterize the minerals in a rock. The analyses reveal information about the mineral composition, texture, and history of the rock,…

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