Attempts were made to calculate Earth's age from the thickness of surviving sedimentaryrock 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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Sedimentary rocks—the most common rock type near the surface—are also the most common reservoirs for water because they contain the most space that can be filled with water.