《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
8 H2 P9 h5 \+ |catalog number NMNH115296-3, in transmitted light (14 by 18 millimeters). Molten / P( h# f- g, ]6 l# u
lava erupted onto the sea floor freezes to glass and minerals that contain clues * P5 l6 g: C0 Q; _9 p
to the lava's ancient past and origin in Earth's deep interior. Volcanic glasses
* h3 }  ^4 A) G4 ~( c* O* F: ssuch as this one may reveal a link between Earth's oxidation state and the deep
  S" F1 j  j* E( Ycarbon cycle. See page 1314. # T$ [5 e+ e2 [% F
Image: G. Macpherson, T. Gooding, and E. Cottrell ( M% `6 ?$ g+ p: q

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