数百万年地幔沉积物堆积在（鲸）的遗骨上。
Over thousands of millennia a mantle of sediment built up over its bones.
冰下河溪的沉积物堆积而成的很长的垄岗。
Eskers are very long ridges apparently formed when sub-glacial streams or rivers deposited sedimentary materials.
钙质沉积物堆积在海底，最后压紧并胶结形成石灰岩。
Calcareous sediments accumulated on a sea floor and eventually were compacted and cemented to form limestone.
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