碳酸盐沉积物（carbonate sediments）由形成于海洋或湖泊底部的粒状泥状碳酸盐矿物及其集合体组成，它可以通过生物作用形成，也可以从过饱和碳酸盐的水体中直接沉淀而成。
一切环境的碳酸盐沉积物，基本上都是古代生物化学体系的产物。
Carbonate sediments in all environments are basically products of an ancient biochemical system.
在中欧地区的河谷、洪积扇、山坡坡麓及湖底常零星分布着更新世及全新世的碳酸盐沉积物。
Pleistocene and Holocene freshWater carbonate is often scattered in valleys, on alluvial fans, at the foot of mountain slopes and the bottom of lakes in Central Europe.
这样在海洋表面的碳酸盐的沉积物通过板块构造返回地球中。
This makes carbonate sediments on the floor of the ocean that are subducted back into the Earth though plate tectonics.
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