The older strata gradually disintegrate.
较老的岩层渐渐风化.
Contained within the rock strata is evidence that the region was intensely dry 15,000 years ago.
岩层中有证据表明，该地区在15,000年前曾经非常干旱。
This layer of rock contains a lot of flint.
这一岩层中有大量燧石.
Exaggerated sections distort the shapes of folds as well as bed thickness.
比例放大的剖面歪曲褶皱的形态和岩层厚度.
The rock formations break with cracks into new positions.
岩层产生裂缝而破裂移位.
Drag bits are used most commonly in soft formations.
在松软岩层中最常用的是钢砂钻头.
Powerful forces inside the earth break the rocks.
地球内部的巨大力量断裂了岩层.
Two features of folds in stratified rocks that contain strut members invite special attention.
包含在承压岩层内的成层岩石中的褶皱,有两个特点引人特别注意.
At places in the thickest layer they are present as ellipsoidal globules, 1 - 10 mm in length.
在最厚岩层中,有的地方它们呈椭圆形球体, 长1 ― 10毫米.
The deposit is contained in the predominantly calc - silicate upper part of the corella formation.
矿床位于科雷拉岩系上部主要为钙质-硅酸盐类的岩层中.
It is as if certain beds in the sub - surface contained banks of tiny capacitors.
好象地下某些岩层包含了成排的小电容.
Fossils " label " the rocks in which they occur and yield much information about the past.
化石给他们所在的岩层 “ 贴上了标签 ”,并提供许多关于过去的知识.
The neutron log is primarily resposive to the amount of hydrogen in the formation.
中子测井对岩层的氢含量有显著反映.
In some places the rock floor beneath the ice is 8,000 feet below sea level.
冰层覆盖下的岩层在有些地方为海面下八千英尺深.
The Dengying formation encluded carbonate turbidite and gravity sliding layer.
灯影组发育碳酸盐岩浊积岩层和重力滑动层.