《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
/ A- ]% s' r) x2 z7 Ncatalog number NMNH115296-3, in transmitted light (14 by 18 millimeters). Molten ) n% `, f: f7 u3 L
lava erupted onto the sea floor freezes to glass and minerals that contain clues 8 P/ d# g  M1 e! G, Q
to the lava's ancient past and origin in Earth's deep interior. Volcanic glasses
/ h  }# K4 Q! Hsuch as this one may reveal a link between Earth's oxidation state and the deep
! u2 _& y8 z3 jcarbon cycle. See page 1314. . @; o8 b; v0 D+ r: G( }  ]# f
Image: G. Macpherson, T. Gooding, and E. Cottrell ( N! L; o( e  {, D

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