该凹陷沉积的碎屑岩具有矿物成分成熟度低和结构成熟度低的特征,所以其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.
碎屑沉积物衍生自陆地物质,大部分以铝硅酸盐矿物形式存在,由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.
这些冰河沉积物下方的较老岩层,是沥青铀矿与黄铁矿碎屑;这两种矿物被认定为大气中氧气极为稀少的证据。
In the older rocks below these glacial deposits are detrital uraninite and pyrite two minerals considered evidence for very low levels of atmospheric oxygen.
在矿物或岩石的颗粒之间的胶结物沉淀过程,由此形成固态的碎屑沉积岩,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.
沉积岩不像火成那样是由熔融的岩石物质形成,沉积岩是由早先存在的浆岩、变质岩和沉积岩的矿物碎屑及岩石屑组成的。
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.
测定碎屑矿物沉积后吸收的古剂量是第四纪沉积物热释光测年的关键。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.
磁铁矿片麻岩的泥质矿物特征和碎屑锆石的存在表明,原岩不是一个纯化学沉积体。
The pelitic mineralogy of the magnetite gneiss and presence of detrital zircon demonstrate that the protoliths were not a pure chemical sediment.
磁铁矿片麻岩的泥质矿物特征和碎屑锆石的存在表明,原岩不是一个纯化学沉积体。
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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