《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 % Y$ Q' x6 s+ g+ M
catalog number NMNH115296-3, in transmitted light (14 by 18 millimeters). Molten 4 h$ P' m6 T. t* k7 P& s& l. H) s) i
lava erupted onto the sea floor freezes to glass and minerals that contain clues
1 A# d, o+ ]8 u1 z6 |to the lava's ancient past and origin in Earth's deep interior. Volcanic glasses
2 t7 y) k% s7 S5 q5 asuch as this one may reveal a link between Earth's oxidation state and the deep
5 H* [% y" w( N+ |carbon cycle. See page 1314.
  Q" Y# \3 \+ H6 s  c$ t: MImage: G. Macpherson, T. Gooding, and E. Cottrell
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