《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 # ?/ n9 V6 B7 F2 y% }5 o0 c' Q
catalog number NMNH115296-3, in transmitted light (14 by 18 millimeters). Molten
* j) Y: t$ x, Ulava erupted onto the sea floor freezes to glass and minerals that contain clues , g1 t& r, e2 {. d$ f
to the lava's ancient past and origin in Earth's deep interior. Volcanic glasses 8 h. t$ u8 }% [4 n
such as this one may reveal a link between Earth's oxidation state and the deep 7 m6 M2 o# ?& n3 K6 L7 H) Q* [
carbon cycle. See page 1314. 7 z3 D1 u$ j) Z# Z- X8 p0 N: j7 K( g
Image: G. Macpherson, T. Gooding, and E. Cottrell
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