Because they are porous, sedimentary rocks, such as sandstones and conglomerates, are important potential sources of groundwater.
由于像如砂岩和砾岩这样的沉积岩是多孔的，它们是地下水的重要潜在来源。
Although most fossils are found in marine sedimentary rocks, they also are found in terrestrial deposits left by streams and lakes.
虽然大多数化石是在海洋沉积岩中发现的，但它们也存在于河流和湖泊所留下的陆地沉积物中。
In this process, sedimentary rocks that originally formed on the seabed may be folded upwards to altitudes of more than 26,000 feet.
在这个过程中，最初形成于海床上的沉积岩可能会向上折叠到26000英尺以上的高度。
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.
沉积岩——地表附近最常见的岩石类型——也是最常见的储水层，因为它们可以装水的空间最多。
The sedimentary rocks are graywacke, siltstone, tuff andpellitie, etc.
沉积岩有杂砂岩、粉砂岩、凝灰岩、泥质岩等。
Classification of sedimentary rocks.
沉积岩的分类。
These folded rocks look like sedimentary rocks.
这些发生褶皱的岩石看起来像是沉积岩。
Are there any further divisions for sedimentary rocks?
对于沉积岩还有进一步的划分吗？
An anisotropic model of sedimentary rocks is presented.
给出了沉积岩的一种各向异性模型。
The sedimentary rocks were originally deposited in the water.
沉积岩原来埋藏于水中。
Low-lying areas tend to be formed of granite or sedimentary rocks.
低洼地区大致上由花岗岩及沉积岩组成。
Sedimentary rocks are thus tagged by the fossils which they contain.
沉积岩就这样以它们所含的化石作为鉴别的标记。
Key points: texture, structure and classification of sedimentary rocks.
重点：沉积岩的结构、构造和分类。
There are primary stylolite and secondary stylolite in sedimentary rocks.
沉积岩中的缝合线构造有原生和次生两种成因。
Sedimentary rocks such as sandstone also testify to the quicker days of yore.
诸如砂岩这样的水成岩同样表明：昔日更短。
It immediately spotted outcrops of layered sedimentary rocks, the first ever seen on Mars.
它立即发现数个沉积岩的层状露头，这是在火星上首见。
Formation of sedimentary rocks: weathering, erosion, transportation, deposition and diagenesis.
沉积岩的形成过程：风华作用、侵蚀作用、搬运、沉积和成岩作用。
The results indicate that the composition of post_Archaean sedimentary rocks of NCC is not uniform.
结果表明，华北克拉通后太古宙沉积岩组成并不均一。
Pyroclastic rocks are a kind of transitional and complex rocks between lavas and sedimentary rocks.
火山碎屑岩是介于溶岩和沈积岩之间的过渡类型岩石，岩类复杂。
The results indicate that the composition of post _ Archaean sedimentary rocks of NCC is not uniform.
结果表明，华北克拉通后太古宙沉积岩组成并不均一。
They are sedimentary rocks, rocks which were laid down by the action of water on the bed of the ocean.
它们是水成岩，是由海水作用沉至海底的。
The ultrabasic rocks form a complex of large tectonic slices with intercalated slices of Sebakwian sedimentary rocks.
超基性岩与塞巴奎沉积岩岩片相间构成一巨大的构造岩片的杂岩体。
According to this theory, subsidence of sedimentary rocks is accompanied by the formation of fluid-saturated zones of dilatation.
按照这一理论，沉积岩的沉降伴随有扩张的流体饱和带的形成。
These two geological bodies contact along the trend of valley, where you can see the granite is intruded into the sedimentary rocks.
以上两种地质体沿着山谷走向方向接触，花岗岩侵入于砂岩、粉砂岩中。
Depositional facies, a term of petroleum geology, is a combination of sedimentary rocks produced by a certain depositional environment.
沉积相是石油地质学中的一个术语，是指一定的沉积环境所形成的沉积岩组合。
The Dabieshan Group is a complex composed of early formed sedimentary rocks, magmatic rocks of varying ages and types and tectonic slices.
大别山杂岩是由早期的沉积地层和不同期次、不同类型的岩浆岩以及构造岩片所组成的杂岩体。
It was shown that the amphibolite was transformed from oceanic tholeiitic basalts and the leptynite was converted from acidic sedimentary rocks.
结果表明，该区的斜长角闪岩是由大洋拉斑玄武岩变质而成，变粒岩则是由酸性沉积岩变质而成。
The gold mineralization is controlled by lower carboniferous volcanic and pyroclastic sedimentary rocks, regional faults and secondary structure.
论述下石炭统火山岩及火山碎屑沉积岩、区域性大断裂及次级构造对成矿的控制作用。
The binding material in sedimentary rocks that precipitates between grains from pore fluids. Calcite and quartz are common cement-forming minerals.
沉积岩内颗粒之间的孔隙流体中沉淀的束缚物质。方解石和石英是常见的造胶结物矿物。
The results show that the soils have, in varying degree inherited some properties of purple sedimentary rocks for their very weak chemical weathering.
结果显示，紫色沉积岩发育的土壤，在一定程度上继承了母岩的特点，化学风化作用微弱。
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