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一、区域地质概况大道尔吉基性超基性岩体,位于祁连褶皱系中间隆起带西端南侧,与南祁连褶皱带相邻接。祁连中间隆起带以前震旦系的片岩、片麻岩夹大理岩和震旦系的硅质灰岩、板岩夹千枚岩等分布甚广,其次为第三系砂岩、砾岩,石炭系灰岩夹炭质板岩出露另星。南祁连褶皱带为下古生界(寒武-奥陶系)板岩、千枚岩、灰岩夹火山岩等。区内岩浆活动强烈,除喷发作用形成的火山岩外,侵入活动频繁,形成超基性岩、闪长
I. Regional Geological Overview The Ergoji-Kyrgyzstan ultrabasic rock mass is located on the south side of the western uplift of the mid-uplift zone of the Qilian fold system and is adjacent to the southern Qilian fold belt. The former Sinian schist, gneiss, marble and Sinian siliceous limestone, slate and phyllite are widely distributed in the middle Qilian uplift belt, followed by Tertiary sandstone, conglomerate and carboniferous Limestone folder carbonaceous slate exposed another star. South Qilian fold belt for the Lower Paleozoic (Cambrian - Ordovician) slate, phyllite, limestone folder volcanic rocks. Intense magmatic activity in the area, except volcanic rocks formed by eruptions, the frequent intrusion activity, the formation of ultrabasic rocks, dilatometer