Loose sediments may be changed into solid sedimentary rocks.

松散的沉积物可以变成坚硬的沉积岩.

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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.

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Stocks , dykes etc. can be placed in simple sequence with the sedimentary rocks.

岩株, 岩墙等可以按其与沉积岩的简单顺序放在图中.

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The equation appears to be valid for a wider range of sedimentary rocks.

这个方程式看来适合于相当大的一部分沉积岩.

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Key points: texture, structure and classification of sedimentary rocks.

重点: 沉积岩的结构 、 构造和分类.

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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.

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Structure of sedimentary rocks: bedding, cross bedding, mud cracks and ripples.

沉积岩的构造: 层理 、 交错层理泥裂和波痕.

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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.

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These folded rocks look like sedimentary rocks.

这些发生褶皱的岩石看起来像是沉积岩.

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An anisotropic model of sedimentary rocks is presented.

给出了沉积岩的一种各向异性模型.

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Metamorphic basement of the jiangnan Proterozoic Paleo - island arc mainly consists of low - grade metamorphic volcanic sedimentary rocks.

江南元古宙古岛弧的基底变质岩主要由浅变质的岛弧火山—沉积岩系组成.

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Exploration markers includes hot - water sedimentary rocks, gossan wall - rock alteration, and geophysical and geochemical anomalies.

找矿标志主要有热水沉积岩 、 铁帽、围岩蚀变 、 地球物理异常、地球化学异常等.

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Pyroclastic rocks are a kind of transitional and complex rocks between lavas and sedimentary rocks.

摘要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.

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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.

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There are many oil - bearing rocks are composed of sedimentary rocks with layer structure in the earthcrust.

地壳中许多含油气储层是由层状结构的沉积岩层所组成.

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