Answers To Mantle Oxidation Mystery | August 3, 2009 Issue - Vol. 87 Issue 31 | Chemical & Engineering News
 
 
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Volume 87 Issue 31 | p. 28 | Concentrates
Issue Date: August 3, 2009

Answers To Mantle Oxidation Mystery

Spectroscopic study may solve a long-standing debate over what controls the oxidation states of Earth's mantle
Department: Science & Technology
Keywords: mantle, subduction, oxidation

A new study of magma samples from areas where tectonic plates collide may help solve a long-standing debate over what controls the oxidation states of Earth's mantle. These oxidizing properties influence the evolution of Earth's crust and mantle. On the basis of data from magma taken from volcanoes just above the mantle wedge that overlays a sinking tectonic plate, scientists concluded years ago that Earth's mantle is more oxidized in areas where tectonic plates are . . .

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