《科学》[Science]13年6月14日出版pdf全文

nero1981

: H! r. F4 N8 @COVER Polished thin section (70 micrometers) of volcanic glass, sample ! F% {0 i  e/ U" s, J/ P
catalog number NMNH115296-3, in transmitted light (14 by 18 millimeters). Molten
: g) G$ k# R& s  W) Ulava erupted onto the sea floor freezes to glass and minerals that contain clues 2 U  S. I1 q/ ~/ V
to the lava's ancient past and origin in Earth's deep interior. Volcanic glasses 0 j9 x3 A$ M; n) @: A
such as this one may reveal a link between Earth's oxidation state and the deep * c6 I# x/ j2 W4 q3 Q0 g' Z
carbon cycle. See page 1314.
; F: e/ r2 F! h% RImage: G. Macpherson, T. Gooding, and E. Cottrell % U0 d# l+ B, Z0 ^' j& ^

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