《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 9 F# d4 I2 O1 b9 D7 n
catalog number NMNH115296-3, in transmitted light (14 by 18 millimeters). Molten 0 N) q$ ?+ ]4 _2 c( \
lava erupted onto the sea floor freezes to glass and minerals that contain clues
3 n* J+ I5 g8 y0 Nto the lava's ancient past and origin in Earth's deep interior. Volcanic glasses
. g8 t& M* D3 H( F& p2 ^such as this one may reveal a link between Earth's oxidation state and the deep
1 G: R! D! ^3 g+ l% d$ p4 Bcarbon cycle. See page 1314. ! x5 |6 U7 s6 O* G" @
Image: G. Macpherson, T. Gooding, and E. Cottrell
9 [& m0 p' s1 Y8 p4 K

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