地层 [地质] stratum ; [地质] formation ; strata ; layer
国际地层委员会 International Commission on Stratigraphy
硬质地层 Hardpan
地球大气层 earth atmosphere ; the Earth's atmosphere
地层学 [地质] stratigraphy
地层移动 ground movement ; earth movement ; surface break ; earth-shift
地层水 formation water ; stratum water ; fomation water FmW
高地边界断层 [地质] highland boundary fault
含油地层 oil bearing formation ; oil bearing horizon ; oil bearing stratum ; oil layer
上覆地层 overlying formation ; overburden
存在于两个相连地层之间的岩石，可能在这一层是泥板岩，而在另一层中是砂岩；但存在于泥板岩或者砂岩中的化石往往都是相同的。
While rock between two consistent strata might in one place be shale and in another sandstone, the fossils in that shale or sandstone were always the same.
很快，海洋软泥层开始在原先的硬地层上面堆积起来。
Soon layer of oceanic ooze began to accumulate above the old hard layer.
如同地球一样，月球上有地层，表面是一层地壳，其下是很深的地幔。
Like the earth, the moon is in layers, with a crust on the outside and a deep mantle below.
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