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- Its petrochemical characteristics show that the volcanics was formed in oceanic island tectonic environment. 岩石化学特征表明火山岩形成于洋岛构造环境。
- Comparing with Pacific Rim porphyry copper belt, the favorite tectonic environment is Andean, i.e., the fan shaped structure. 与环太平洋斑岩铜矿对比,有利成矿的构造类型为安第斯型,即扇形形态构造;
- In Cretaceous, the Northeast Jiangxi area was in an extensional tectonic environment, resulted in the development of some bimodal igneous rock suites. 本区在白垩纪处于拉张伸展的构造环境,发育双峰式岩浆岩建造。
- The tension tectonic environment like rift and micro-aulacogen are favourable for up-welling of underground magma and metallogenic elements. 裂谷及微型裂陷等拉张性构造环境有利于深部岩浆与成矿物质的上升。
- Comparing with Pacific Rim porphyry copper belt, the favorite tectonic environment is "Andean", i.e., the fan shaped structure. 与环太平洋斑岩铜矿对比,有利成矿的构造类型为“安第斯型”,即扇形形态构造;
- The komatiites were f ormed in Mesoproterozoic,in a tectonic environment of tensile crust,while the r ising komatiite magma was quenched a nd rapidly cooled. 吉峰拉马提岩的形成时代为中元古代;其形成环境可能是地壳拉伸减薄;上涌的科马提质岩浆在淬火快速冷却的条件下形成.
- The strain state of the emplaced magma is shown by ellipsoid parameters, and distribution of stress field of the magma reflects the ways of emplacement and tectonic environment. 从磁化率椭球参数可以看出岩浆侵位的应变状态;岩浆应力场分布体现了岩浆侵位元方式及其所处构造坏境。
- The result shows that, gravity change is relation with tectonic environment change, during earthquake gestation, gravitational field have obvious anomalous change. 结果表明,重力变化与构造环境变化有关,地震孕育发生阶段,重力场将有明显的异常变化。
- The geochemical characteristics of the metabasalt agree with those of continental rift type volcanic rocks, forming a tectonic environment of the active shelf rift basin. 变质玄武岩的地球化学特征与大陆裂谷型火山岩一致,形成于活动陆棚裂陷(谷)盆地的构造环境。
- Basalt have importance meanings on deduce the Earth's mantle material composition, analysis tectonic environment and the geosphere deep dynamics research. 摘要玄武岩在反演地幔物质成分、分析构造环境和岩石圈的深部动力学研究中具有重要意义。
- We have studied forming condition of gas hydrate in the South China Sea according to the physical oceanography, palaeo-climate, sedimentary environment, and tectonic environment. 摘要从物理海洋、古气候、沉积环境和构造环境分析入手,研究了南海天然气水合物的形成条件。
- The west route project of the North South Water Transfer, very unique in its scale, is located in a region with a very special topography, climate and tectonic environment. 南水北调西线工程的自然环境、区域地质环境和经济技术环境都具有特殊性,区内工程地质勘察特别是隧洞工程的勘察具有较大的难度。
- Genetically, they are the transition between I-type and S-type granites, formed in the tectonic environment of late orogenic epoch, directly related to the South Mongolian compound orogeny. 它们均形成于造山晚期构造环境,与南蒙古复合造山作用有直接关系。
- The important information about the tectonic environments was obtained from the discrimination diagram. 采用多种构造判别图解,获得了重要的构造环境信息。
- They indicate that the Archeozoic tectonic environment is continental nucleus development and crustal block formation, and the Early Proterozoic tectonic environment is represented as rift. 分别代表了太古宙的陆核发展及地块形成和早元古宙的裂谷构造等大地构造环境。
- In this paper, using discontinuous deformation analysis, we simulate numerically the processes of the 1975 Haicheng earthquake and the 1999 Xiuyan earthquake in the tectonic environment of North China where blocks restrict each other by DDA+FEM. 用非连续变形分析方法(DDA+FEM); 数值模拟了华北地区各地块相互制约构造环境中发生的1975年海城地震及1999年岫岩地震的过程.
- Therefore, the tectonic environment of the volcanic rocks in the Luxi area occurred in the late stage development of island arc system near to the side of continent with a thickening crust condition. 因此盆地腹部陆西地区火山岩的喷发环境应该是在岛弧发展后期,属于岛弧近大陆一侧、在地壳增厚的环境下喷发。
- Based on the petrological and petrochemical features of this rock suite,this paper deals preliminarily with the possible tectonic environment and genetic mechanism of the volcanic rocks in question. 本文在讨论了鸡笼嶂组火山岩的岩石学、岩石化学特征基础上,对火山岩形成的构造环境及成因机制作了初步探讨。
- Granitic tectono-magmatic assemblages mainly reflect the genetic connections between the magma types of granites and tectonic environments. 摘要花岗岩的构造岩浆组合主要反映花岗岩的岩浆类型与大地构造环境之间的成因联系。
- The study shows that these vol canic rocks are composed dominantly of andesite with subordinate basalt, belonging to the calc-alkaline series, and formed in the island-arc tectonic environment. 结果表明:该火山岩以安山岩为主,玄武岩为次,属钙碱性系列,形成于岛弧大地构造环境。