陨石坑的形成和研究(meteorite crater) 定义 陨石坑(较大的陨石坑又称环形山)是行星、卫星、小行星或其它天体表面通过陨石撞击而形成的环形的凹坑。陨石坑的中心往往.
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Barringer Meteorite Crater 陨石坑
fossil meteorite crater [地质] 古陨石坑 ; 古陨石冲击坑
meteorite impact crater 陨石冲击坑
Latvian Geologist Dainis Ozols said he believed someone had dug a hole and tried to make it look like a meteorite crater by burning a pyrotechnic compound at the bottom.
拉脱维亚地质学家戴尼斯说他相信有人故意挖了一个坑并通过在底部燃烧烟火化合物使它看起来像一个陨石形成的坑。
One great meteorite crater was found in Cangshan region, Shandong Province, and main impact evidences are obtained from macroscopical geologic features, local region characters and so on.
山东苍山地区发现一大型陨石坑，通过大量的勘察工作，目前已找到一些重要的证据。
An iridium-enriched sediment layer and a large impact crater in the Yucatn provide evidence that a large meteorite struck Earth about 65 million years ago.
尤卡坦半岛上富含铱的沉积层和一个巨大的陨石坑提供了证据，证明了约6500万年前，一颗大型陨石撞击了地球。
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