Calcareoussediments distributed in the calcium carbonate dissolution belt above CCD boundary.
钙质沉积物分布在碳酸钙补偿深度（CCD）界面以浅区。
2
Calcareoussediments 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。
3
Based on the analyses of abundance and assemblages of calcareous nannoplankton of the surface sediments from the South China Sea, the correlation between the abundance and water depth is found.