《科学》[Science]13年6月14日出版pdf全文

nero1981

0 ~; D6 s8 [+ C$ f/ `% m% j0 BCOVER Polished thin section (70 micrometers) of volcanic glass, sample 4 K8 f* T. C8 u+ ?0 D
catalog number NMNH115296-3, in transmitted light (14 by 18 millimeters). Molten & \) |' |; r; W  Z% H. ^
lava erupted onto the sea floor freezes to glass and minerals that contain clues . W# D: {, J$ M! t, Q! {' u6 T
to the lava's ancient past and origin in Earth's deep interior. Volcanic glasses
, R' i9 Q' C: F% T1 p% Z$ ~4 msuch as this one may reveal a link between Earth's oxidation state and the deep 9 P% E# C, u+ o2 q) u
carbon cycle. See page 1314.
1 D3 P/ ?2 b- s" {3 E9 xImage: G. Macpherson, T. Gooding, and E. Cottrell
$ o( r# |1 P5 k5 ^+ r

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