The sediment deposits reveal that the earthquake and flood happened the same year.

沉积物沉积物显示地震和洪水发生在同一年。

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.

1980年科学家通过研究撞击后形成的、覆盖地球表面的尘雾沉积层，首次确认了这次撞击。