1980年,科学家首次在从尘云中沉淀下来的全球范围的沉积层中识别出这种撞击,这些尘云在撞击后围绕着地球。
Scientists first identified this impact in 1980 from the worldwide layer of sediment deposited from the dust cloud that enveloped the planet after the impact.
在正常的水相中,残留的磷会自己移动,沉淀到海洋底部,并混合到海洋沉积物中。
In the normal water phase, the remaining Phosphorus makes its way, settles to the bottom of the ocean, and gets mixed into ocean sediments.
举例来说,1972年袭击了图瓦卢的飓风比比在东部礁岩上沉淀了140公顷的沉积碎屑,将主岛的面积扩大了10%。
For instance, when hurricane Bebe hit Tuvalu in 1972 it deposited 140 hectares of sedimentary debris onto the eastern reef, increasing the area of the main island by 10 per cent.
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