《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 % M$ ]8 f! W, }! b) n
catalog number NMNH115296-3, in transmitted light (14 by 18 millimeters). Molten
& x* M" Q. C* u/ h+ k  ~) Zlava erupted onto the sea floor freezes to glass and minerals that contain clues
# N  o2 ]* y* ?7 Dto the lava's ancient past and origin in Earth's deep interior. Volcanic glasses
! H0 `$ [  _8 O; fsuch as this one may reveal a link between Earth's oxidation state and the deep
0 Z% E' V8 J+ s$ S8 ~9 I, q$ Ocarbon cycle. See page 1314.
' Y* [. Z) t: G, b7 I% z, _Image: G. Macpherson, T. Gooding, and E. Cottrell
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