Sediment cores are essentially a record of sediments that settled at the sea floor, layer by layer, and they record the conditions of the ocean system during the time they settled.

沉积物岩心主要记录的是沉淀在海底沉积物，一层又一层，记录它们沉淀时的海洋系统状况。

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The elemental geochemical anomaly of pore water in Marine sediments during the formation of gas hydrate is a significant indication for Marine gas hydrates in the deep sea floor.

海洋天然气水合物在生成过程中会引起周围沉积物孔隙水中元素地球化学异常，这些异常是指示天然气水合物存在的重要标志。

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Calcareous sediments accumulated on a sea floor and eventually were compacted and cemented to form limestone.

钙质沉积物堆积在海底，最后压紧并胶结形成石灰岩。

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