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巴伦支海中的大撞击坑Ｓ．Ｔ．Ｇｕｄｌａｕｇｓｓｏｎ一个大的地球外物体与地球碰撞导致了白垩纪一第三纪边界群体的灭绝，这种假设使人们对碰撞是群体灭绝主要原因之一的可能性产生极大兴趣。然而，地球上较少的撞击坑记录不能令人满意地证实所提出的这个假设，因为撞击...
Large craters S in the Barents Sea. T. Gudlaugsson The collision of a large extraterrestrial object with the Earth led to the extinction of the Cretaceous-Tertiary boundary communities, which led to great interest in the possibility of collisions being one of the main causes of mass extermination. However, fewer craters records on earth do not satisfactorily confirm this hypothesis because of the impact ...