shallow marine deposit

例句：

1. 1. The shallow marinedeposits are rich in organic matter.
   浅海沉积物富含有机物质。
2. 2. The geologists found that the shallow marine depositswere formed by the ancient sea level fluctuations.
   地质学家发现，浅海沉积物是由古代海平面的波动形成的。
3. 3.The study of shallow marine deposits canprovide valuable insights into the history of theEarth's oceans.
   研究浅海沉积物可以为我们提供有关地球海洋历史的宝贵见解。