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一、岩体地质特征 (一)概况玉石沟超基性岩体群1954年以来,历经十余年的断续勘探研究工作,基本梗概业已查清。该岩体群位于青海省黑河上游陶莱山主脊两侧。大地构造位置处于中、北祁连深大断裂带北侧,北祁连加里东地槽褶皱带-复背斜南翼陶莱山复向斜轴部断裂带上。岩体群围岩地层主要为前震旦系及奥陶系,其次为石炭系、二迭系及第四系。前震旦系分布在岩体群的东南部,地层出露西宽东窄,由一套中深度变质的结晶片岩及碳酸盐岩组成,局部夹钙质板岩。奥陶系分布于岩体群的南北两侧,为一套海底喷发沉积的
I. Geological Features of Rock Mass (I) General Jade Giant Ultrabasic Rock Mass Since 1954, after more than ten years of intermittent exploration and research work, the basic synopsis has been identified. The rock mass is located on both sides of the main ridge of Tao Laoshan in the upper reaches of the Heihe River in Qinghai Province. The tectonism is located on the north side of the deep fault zone of the Central and Northern Qilian, and on the fault zone of the Taulaishan syncline and syncline in the southern part of the North Qilian Gary Trough fold belt and anticline. The rock mass is mainly composed of the former Sinian and Ordovician strata, followed by Carboniferous, Permian and Quaternary. The former Sinian is located in the southeastern part of the rock mass group, and the strata of the exhumation are exposed to the east-west and east-east narrow layers. They are composed of a set of middle-deep metamorphic crystalline schist and carbonate rocks and local calcareous slate. Ordovician distribution in the north and south sides of the rock mass, a set of eruption deposition