《科学》[Science]13年6月14日出版pdf全文

nero1981

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COVER Polished thin section (70 micrometers) of volcanic glass, sample
* ?& c: H! |( g3 D1 `catalog number NMNH115296-3, in transmitted light (14 by 18 millimeters). Molten ( R; I3 T$ G8 y8 l
lava erupted onto the sea floor freezes to glass and minerals that contain clues 4 Y  n0 }. Y  A
to the lava's ancient past and origin in Earth's deep interior. Volcanic glasses ) u5 r$ v9 A7 s4 H( U
such as this one may reveal a link between Earth's oxidation state and the deep + y6 ^" n: y: A
carbon cycle. See page 1314.
6 q1 `* q8 o: S5 `Image: G. Macpherson, T. Gooding, and E. Cottrell
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