A refined age for the earliest opening of Bering Strait
A refined age for the earliest opening of Bering Strait
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DOI：
10.1016/s0031-0182(02)00249-3
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发表时间：
2002-07-20
影响因子：
3
通讯作者：
Barinov, KB
中科院分区：
文献类型：
--
作者：
Gladenkov, AY;Oleinik, AE;Barinov, KB
阿拉斯加西南部阿拉斯加半岛银河组中的硅藻化石表明，白令海峡首次泛滥时，北太平洋新生代最古老的双壳类软体动物Astarte从北冰洋迁移到北太平洋，其年龄为5.4-5.5 Ma。这里提供的数据是对早期报告的4.8-5.5 Ma年龄范围的改进，并暗示白令海峡首次开放的时间非常接近中新世末期，为5.32 Ma。(C)2002 Elsevier Science B. V.保留所有权利。
Biostratigraphically and chronostratigraphically important diatoms from the Milky River Formation, Alaska Peninsula, southwestern Alaska, imply an age range of 5.4-5.5 Ma for the oldest North Pacific Cenozoic occurrence of the marine bivalve mollusk Astarte, which migrated from the Arctic Ocean into the North Pacific when Bering Strait first flooded. The data presented here are a refinement of the age range of 4.8-5.5 Ma reported earlier and imply that Bering Strait first opened very near the end of the Miocene at 5.32 Ma. (C) 2002 Elsevier Science B.V. All rights reserved.