变质压力为低—中压过渡型,堇青石在变质沉积岩中普遍存在;
Metamorphic pressure of granulites is lower-middle, and cordierites are widely occurred in metasedimentary granulites.
因此,可以推测南苏鲁造山带核部的超高压变质岩原岩为形成在大陆板内环境的沉积岩-酸性和基性火山岩-花岗岩和奥长花岗岩建造。
Therefore, the protoliths of the UHPM rocks from the southern Sulu orogenic belt were sedimentary rocks, mafic and acidic volcanic rock, granite and trondhjemite formation with continental affinity.
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。
It was shown that the amphibolite was transformed from oceanic tholeiitic basalts and the leptynite was converted from acidic sedimentary rocks.
一种纹理清晰的变质岩,由石英、长石、云母和其他矿物组成,因侵入岩对沉积岩,特别是页岩的作用而形成。
A fine-grained metamorphic rock composed of quartz, feldspar, mica, and other minerals, formed by the action of intrusive rock upon sedimentary rock, especially shale.
新生代地层中砾岩砾石成分稳定,以变质岩和沉积岩成分居多,岩浆岩很少;
Gravels components from the Cenozoic strata are mainly composed of metamorphic rocks and sedimentary rocks with little magmatic rocks.
长石石英云母片岩、石英岩和大理岩的原岩为沉积岩,与副变质的长英质片麻岩和基性火山岩—起构成了古老的表壳岩组合。
The quartz-mica schist, quartzite and marble were metamorphosed sedimentary rocks, and, together with paragneiss and mafic rock, constituted the old supracrustal series.
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.
在分析岩浆活动特征及其形成的构造环境的基础上,探讨了研究区沉积岩系及其中有机质的热变质作用。
The authors made a discussion on the thermometamorphism of sedimentary rocks and their organic matters in the area, according to the magmatic activities and their tectonic environment.
二叠纪全球性大规模火山活动,致使区内整个中寒武纪的火山沉积岩普遍发生变质。
Afterward, global large-scale massive volcanic activity in Permian Period generally brought about metamorphism whole middle Cambrian Period volcanic sediment rock in research area.
其上部为一套变质的复理石建造,下部为变质的火山-沉积岩建造。
The upper part of it is a suit of metamorphic flysch formation, and the lower part, metamorphic volcanic-sedimentary rocks.
经岩石化学及微量元素等的研究表明,这是一个由贫硅富铝的沉积岩经高级变质作用形成的矿床。
Based on the investigation by petrochemistry and trace elements, It is regarded that this corundum deposit are formed…
经岩石化学及微量元素等的研究表明,这是一个由贫硅富铝的沉积岩经高级变质作用形成的矿床。
Based on the investigation by petrochemistry and trace elements, It is regarded that this corundum deposit are formed…
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