《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
0 r6 j% g0 J% I7 O/ s, y7 d4 ~catalog number NMNH115296-3, in transmitted light (14 by 18 millimeters). Molten
# q* @5 E2 m3 f' g1 v0 y+ ~lava erupted onto the sea floor freezes to glass and minerals that contain clues
8 D, l" G* m: k0 L5 j* Eto the lava's ancient past and origin in Earth's deep interior. Volcanic glasses 5 o  R. h( i8 Z8 L$ S
such as this one may reveal a link between Earth's oxidation state and the deep % S3 n2 j2 m4 h
carbon cycle. See page 1314. 7 _1 d. C3 }1 @" F( f! Z& y
Image: G. Macpherson, T. Gooding, and E. Cottrell 2 z) b0 T9 E# R" c5 m+ p

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