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本帖最后由 细胞海洋 于 2012-8-3 15:08 编辑
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COVER Lake El'gygytgyn, measuring 12 kilometers in diameter and 170
: g) W, u- M# T7 K8 C0 ~% x; Qmeters in depth, is located in a meteorite impact crater 100 kilometers to the - P! N) i8 J8 {+ P; u. s% ]! ~% _
north of the Arctic Circle in northeastern Russia. An international drilling # T; |; G5 ]. M3 s) |; N ^" `9 B
campaign recovered a sediment record from the bottom of the lake, which sheds - ?; k9 F4 L" f) J
new light on the climate history of the Arctic over the past 2.8 million years.
/ ?: J; h+ }" w: h/ wSee page 315. Photo: % B( K+ s+ |/ Z
Petr Tikhomirov 2 {* X6 E+ ~# O# D' Q' _4 s
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发表于 2012-7-21 10:34
发表于 2012-7-22 19:51
