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- The more abundant iron ore reserves, has a wider distribution, the main type of metamorphic sedimentary type, account contact (skarn)-type deposition, manganese ore reserves less. 铁矿储量较为丰富,分布亦较广,主要类型为沉积变质型、接触交代(矽卡岩)型、沉积型,锰铁矿储量较少。
- metamorphic sedimentary iron deposit 变质沉积铁矿
- metamorphic sedimentary 变质沉积
- Hydrocarbons commonly occur in sedimentary basins and are absent from intervening areas of igneous and metamorphic rocks. 在沉积盆地中,碳氢化合物很常见,而在间杂的火成岩与变质岩中则找不到。
- Igneous, metamorphic and sedimentary rocks are all featured including basalt, breccia, chert, gneiss, granite, limestone and pumice. 对火成岩、变质岩以及沉积岩(包括玄武岩、黑硅石、片麻岩、花岗岩、石灰石、浮石)作了更为详细的说明。
- Gravels components from the Cenozoic strata are mainly composed of metamorphic rocks and sedimentary rocks with little magmatic rocks. 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;
- The layered structure common to metamorphic rocks. 叶理象变质岩一样的岩石层状结构
- Metamorphic rocks are called changed rocks because they were originally either igneous or sedimentary rocks that have been transformed into a total different kind of rock. 变质岩也可称为发生了变化的岩石,因为它们原来是火成岩或沉积岩,后经改造而变成一种完全不同类型的岩石。
- The sedimentary rocks did not dome. 沉积岩没有形成穹丘。
- Metamorphic rock having porphyritic texture. 残斑岩具斑岩状结构的变质岩。
- Potassium-rich brines resources can be classified into sedimentary metamorphic type and lixiviation sylvine.These two kinds are also new ways of looking for sylvine in Sichuan. 卤水钾资源有沉积变质型和钾盐溶滤叠加型两类,也是四川找钾工作的新方向。
- The Archean Group sedimentary metamorphic iron ore to the north and north-east of Tangshan lies shallow in the earth, is large in scalc and easy to grind and process. 唐山北部和东北部太古界沉积变质铁矿埋藏浅、规模大、矿石易磨易选。
- Nor is there evidence for metamorphic minerals such as slate or marble, produced when volcanic or sedimentary rocks are subjected to high pressure or temperature. 此外,板岩、大理岩等由火山岩或沉积岩受高压、高温影响而形成的变质矿物,也不见存在的证据。
- Can eunuch become metamorphic operation? 太监能做变性手术吗?
- There are five kinds of superlarge gold deposits in China,including greenstone,metamorphic clastic rock,sedimentary rock,volcanic rock and granite types. 中国超大型金矿床有5种类型:绿岩型、变质碎屑岩型、沉积岩型、火山岩型、花岗岩型。
- Its geological genetic typesare mainly placer type , sedimentary type ,peginatite type ,volcanic type ,pneumatolyto hy-drothermal type ,sedimentary metamorphic type... 其地质成因类型主要有砂矿型、沉积型、伟晶岩型、火山岩型,气成-热液型、沉积变质型和接触变质型。
- Layers of sedimentary rock;a layer of warm air. 多层的沉积岩;热空气层
- Sedimentary rock covering older crystalline layers. 沉淀岩覆在旧的水晶状层之上的沉积岩石
- Sedimentary rock is the best place to find fossils. 沉积岩是找到化石的最佳地方。
- Metamorphic rocks are formed from both sedimentary and igneous rocks by transformations due to heat and pressure at depth in the crust; unless very intense, these transformations do not totally obliterate the primary igneous or sedimentary features. 变质岩通常由沉积岩和火成岩受到地壳深处的地热和压力影响而变化形成,除非转变非常强烈,一般都不会完全去除火成岩和沉积岩的主要特征。