• 凹陷沉积碎屑具有矿物成分成熟度结构成熟度低的特征,所以埋藏成岩作用十分强烈

    The clastic rocks in this depression are characterized by low maturation of the mineral composition, and low maturation in structure, thus diagenesis due to burial is very strong.

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  • 碎屑沉积衍生陆地物质大部分硅酸盐矿物形式存在,河流和风的作用而沉积于海洋。

    It derives from land materials, mostly in the form of aluminosilicate minerals, and is deposited in the ocean by rivers and wind.

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  • 这些冰河沉积下方较老岩层沥青铀矿黄铁矿碎屑;这两种矿物被认定大气中氧气极为稀少证据

    In the older rocks below these glacial deposits are detrital uraninite and pyrite two minerals considered evidence for very low levels of atmospheric oxygen.

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  • 矿物岩石颗粒之间胶结物沉淀过程,由此形成固态碎屑沉积,为石化作用的一个阶段

    The process of precipitation of cement between mineral or rock grains and forming solid clastic sedimentary rock, one phase of lithification.

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  • 沉积火成那样熔融岩石物质形成沉积是由早先存在变质岩沉积岩的矿物碎屑岩石屑组成的。

    Unlike igneous rocks which are formed from molten rock material, sedimentary rocks are made up of particles of previously existing rocks, including igneous, metamorphic and sedimentary rocks.

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  • 测定碎屑矿物沉积吸收古剂量第四纪沉积光测年的关键。测定古剂量的方法有三种,即部分晒退法、残余热释光法和再生热释光法。

    Determination of the paleodose absorbed by debris minerals in sediments after deposition is a key course for TL dating of the Quaternary sediments.

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  • 磁铁矿片麻岩泥质矿物特征碎屑锆石存在表明不是一个化学沉积

    The pelitic mineralogy of the magnetite gneiss and presence of detrital zircon demonstrate that the protoliths were not a pure chemical sediment.

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  • 磁铁矿片麻岩泥质矿物特征碎屑锆石存在表明不是一个化学沉积

    The pelitic mineralogy of the magnetite gneiss and presence of detrital zircon demonstrate that the protoliths were not a pure chemical sediment.

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