Such a biogenic shoal microfacies is characterized by extensive distribution, smooth top and thin sedimentary thickness.
生物浅滩具有分布范围广、顶面平坦、沉积厚度较小的特征。
The Cenozoic sedimentary thickness, which is smaller than the Lower Cretaceous denuded thickness, cannot make up heat losses caused by denudation.
新生界沉积厚度小于下白垩统剥蚀量，未能弥补剥蚀造成的热损失。
Attempts were made to calculate Earth's age from the thickness of surviving sedimentary rock and from the current level of the oceans' salinity.
人们曾试图根据现存沉积岩的厚度和目前海洋的盐度水平来计算地球的年龄。
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