《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   p, t& w4 T. W7 r
catalog number NMNH115296-3, in transmitted light (14 by 18 millimeters). Molten & J5 X3 z0 ]7 w
lava erupted onto the sea floor freezes to glass and minerals that contain clues
1 _9 M* H. I' A" c, `to the lava's ancient past and origin in Earth's deep interior. Volcanic glasses 6 a1 O5 ]: k0 G1 i
such as this one may reveal a link between Earth's oxidation state and the deep
) y6 R/ U2 K% r! Zcarbon cycle. See page 1314.
; L, B3 S3 s8 j" w7 |: ~Image: G. Macpherson, T. Gooding, and E. Cottrell
5 @2 l4 O" j% m* k

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