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- mafic grauulite 基性麻粒岩
- Biotite is a subordinate constituent of the mafic and ultramafic rocks generally. 黑云母一般是镁铁质及超镁铁质岩石中的次要成分。
- Wenquan granite is composed of two end-member rocks, one is the host rock of the acid end-member, and the other is the microgranular mafic enclave. 摘要温泉花岗岩体由酸性端元的寄主岩石和暗色微细粒镁铁质包体群及基性岩墙群组成。
- The discriminant figures of tectonic setting show that the mafic rocks was formed in seamount setting. 通过地球化学图件判别,认为该基性杂岩形成于洋中脊的构造环境。
- The mafic rocks of the Early Palaeozoic ophiolite are mainly N-MORB, minorly T-MORB. 早古生代蛇绿岩中辉长岩、辉绿岩和玄武岩等镁铁质岩主要具N-MORB性质,少量具T-MORB性质。
- As to the activity of the components, the mafic component is more active than the felsic component. 在组分活性方面,镁铁质组分比长英质组分的活动更为明显。
- CH4 and contains melt of potassium-rich aluminosilicate, mafic aluminosilicate, carbonatite and sulfides. CH4挥发份的含富钾铝硅酸盐熔体、富镁铁铝硅酸盐熔体、碳酸岩熔体及硫化物熔体的富SiO2硅酸盐熔体。
- All the mafic and felsic volcanic-hosted massive sulfide deposits are therefore defined as the Kunlun type volcanic-hosted massive copper sulfide deposit. 这些基性火山岩型和酸性火山岩型矿床被统称为昆仑式火山岩型块状硫化物铜矿床。
- Jinshui-Qingnikeng mafic layered complex body is located north rim of Yangtse plate, east-north position of Hanlan terrain. 汉南金水-青泥坑镁铁层状杂岩体位于扬子板块北缘汉南地体东北部,岩体侵位于中元古代西乡群。
- Because of plagioclase fractionation, the magma became richer in mafic components and were then emplaced to form Fe-Ti-rich norites. 大庙斜长岩杂岩体的演化过程是:硅酸盐母岩浆首先晶出大量的斜长石晶体堆积形成斜长岩。
- Their geochemical characteristics of trace elements and Nd and Sr isotopes show that these mafic rocks erupted in a back-arc basin. 根据镁铁质岩的层位关系、岩浆来源和微量元素特征,可将该盆地的地质演化概括为扩张阶段和封闭阶段。
- Abstract: Mafic dykes represent a possible event of crustal break-off and can constrain the time of land-rebuilding and dynamics in this area. 文章摘要: 基性岩墙群代表了陆壳伸展裂解事件,可为大陆再造及造山作用过程的动力学研究提供时间约束。
- Zircon geochronology and geochemistry of mafic xenoliths from Liaoning kimberlites:Track the early evolution of the lower crust, North China Craton. 辽宁金伯利岩变基性岩石捕虏体地球化学及锆石年代学: 示踪华北下地壳早期演化。
- According to the geological characteristics, the mafic dykes in Huangling area mainly include diabase and diabase-prophyrite, with nearly NEE trend and NNW trend. 黄陵地区的基性岩墙群主要由辉绿岩脉和辉绿玢岩脉组成 ;走向主要为NEE向 ;少量为NNW向 .
- The Mesoproterozoic tectonic stress field could be simulated on the analysis of the distribution and mechanical origin of the Mesoproterozoic mafic dyke swarms in the central NCC. 根据华北克拉通中部中元古代镁铁质岩墙群的分布和成因机制分析 ,来恢复模拟中元古代的构造应力场。
- The coastal area around Southeastern Fujian is located in the Changle-Nan'ao tectonic zone, where mafic dikes (swarms) were developed since late Mesozoic. 摘要闽东南沿海地处长乐-南澳构造带内,发育晚中生代以来的基性岩脉(岩群),其几何形态和产状记录着区域应力场活动。
- Abstract: High-pressure mafic granulite(HPMG) enclaves or slices are identified in the former Neoarchean “Dantanzi group”.They occur in the country rocks of granitic gneiss. 文摘:在冀北地区原太古代"单塔子群"内多处发现了高压基性麻粒岩构造岩片或透镜体,围岩为花岗片麻岩类,在区域上呈构造带出现。
- This kind of unusual eclogite provides an opportunity to study the deep subduction of mafic lower continental crust and its recycling and effects on the mantle heterogeneity. 大别山这种不寻常的镁铁质下地壳俯冲成因榴辉岩为研究大陆深俯冲和陆壳物质再循环以及对地幔不均一性的影响提供了重要对象和可能性。
- High-pressure mafic granulite(HPMG) enclaves or slices are identified in the former Neoarchean “Dantanzi group”.They occur in the country rocks of granitic gneiss. 在冀北地区原太古代"单塔子群"内多处发现了高压基性麻粒岩构造岩片或透镜体,围岩为花岗片麻岩类,在区域上呈构造带出现。
- The eclogite produced from the subducted mafic lower crust of the Yangtze continental plate is a new finding within the Luotian dome in northern Dabie Mountains. 摘要在“罗田穹隆”中发现了下地壳俯冲成因榴辉岩.榴辉岩呈透镜状或板状产于含石榴子石条带状片麻岩中。