This belt is bounded on the north by a group of large plutonic masses . 该带的北部被一群大规模的深成岩体所限。
2.
Syn - collisional plutonic rocks aie composed of granodiorite and adamellite , which exposed al 由于极度艰苦的工作条件限制,本区研究程度极低。
3.
Trace element geochemistry and plutonic process of peridotite and pyroxenite in the beishan , tarium area 辉石岩的微量元素地球化学特征及其深部过程
4.
He spoke in a strange northern accent ; his thoughts being turned inwards upon himself , his eye on his iron charge , hardly perceiving the scenes around him , and caring for them not at all : holding only strictly necessary intercourse with the natives , as if some ancient doom compelled him to wander here against his will in the service of his plutonic master 他说话时带有奇怪的北方口音他心里只管想着自己的心事,他的眼睛只管照看自己的铁机器,而对周围的景物差不多看也不看,毫不关心只有在特别必要的时候,他才和当地人说几句话,仿佛他是在古老的命运的强迫下,不得不违背自己的意愿漂泊到这里,为这个地狱之王一样的主人服务。
5.
( 7 ) showing and determining the evidence and timing of the lithophere delamination occurred in qinling orogenic belt . pointing out the gold deposit in xiaoqinling - xiongershan region are mostly formed during indosinian to early - yanshan movement , related to mantle fluid injecting caused by lithosphere delamination and plutonic activity caused by further large - scale tectonic extension 初步阐述了东秦岭地区的成矿分区和成矿特点,指出小秦岭一熊耳山地区金矿形成的主要时期是印支一早燕山期,并且与岩石圈拆沉作用所引起的地慢流体活动和之后进一步大规模伸展作用产生的深源岩浆活动密切相关。
6.
In terms of their geological and geochemical characteristics as well as the ages of these plutons , these three sub - belts from south to north are interpreted as syn - subductional , syn - collisional and post - collisional plutons respectively . composed of quartz diorite and quartz monzonite , the syn - subduction plutonic rocks are confined only to the south kunlun massif 俯冲期侵入岩仅出露于蛇绿岩带之南的昆南地块上,岩性组合为石英闪长岩-石英二长岩,三个主要岩体获锆石u - pb年龄值为481ma 、 461ma 、 452ma ,均为奥陶纪。
7.
Eight aspects related to the study of early precambrian metamorphic stratigraphy are dealt with in this paper : general situation of the study ; complexity of the stratigraphy and difficulties of the study ; thoughts and methods of the study ; division of rock suite , rock group and complex rock ; researches on important regional discordances ; types and characteristics of protolith and recovery of palaeoenvironment ; correct differentiation of the metamorphic strata , ttg rock system and other metamorphic plutonic rocks ; determination of the ages of the metamorphic strata 摘要主要论述了与早前寒武纪变质地层(学)有关的8个方面的问题:早前寒武纪变质地层的研究概况;早前寒武纪变质地层的复杂性和研究难度;早前寒武纪变质地层研究的思路和工作方法;早前寒武纪变质岩石地层单位岩群、岩组和杂岩的划分问题;重要区域性不整合的研究;鉴定变质地层的原岩类型、岩石性质和恢复古环境;正确区分变质地层和ttg岩系以及其他变质深成岩;变质地层时代的确定。