《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 |  r' \6 O0 u9 b
catalog number NMNH115296-3, in transmitted light (14 by 18 millimeters). Molten
- J% @! J+ g! f6 ]lava erupted onto the sea floor freezes to glass and minerals that contain clues & f5 p+ x2 @. J1 L4 Q/ O
to the lava's ancient past and origin in Earth's deep interior. Volcanic glasses
: ?4 F& x! j! J8 k9 j" \; g  csuch as this one may reveal a link between Earth's oxidation state and the deep
: a/ z. [( }+ H0 S( B+ w' hcarbon cycle. See page 1314.
$ C# H( q. V, E6 T) CImage: G. Macpherson, T. Gooding, and E. Cottrell
1 m$ y6 F. F! K3 m) k1 @

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