Based on the 1 : 50000 regional geological survey , the sertengshan rock group is revised , involving the schist and marble of low - amphibolite to high - greenschist facies , which are distributed in middle and west inner mongolia 摘要根据近年完成的1 : 5万区域地质调查成果及综合研究,将分布于内蒙古中部色尔腾山、大青山、西部乌拉特后旗以及阿拉坦敖包、叠布斯格等地的低角闪岩相高绿片岩相的片岩、大理岩系厘定为色尔腾山岩群。
2.
Based on the studies of petrotexture , structural deformation and the relevant metamorphism , this paper indicates that this peridotite massif is the product of ultramafic magma cumulated at the crust - mantle transtion zone and has undergone the early stage of plastic deformation under the condition of granulite facies ( 800 ) and late ductile shearing at amphibolite and greenschist facies in relevance to uplifting 本文通过岩体的结构、构造变形及相应的变质作用研究,提出了该橄榄岩体是由超基性岩浆在壳幔过渡带结晶而成,并经历了与围岩一致的麻粒岩相( 800 )条件下的早期塑性变形以及角闪岩相和绿片岩相退化变质条件下与逆冲上升有关的韧性剪切变形。
3.
Greenschist facies , low green schist facies and brittle shear deformation facies . the attitude of different structural element of the yagan mcc are keeping coordination . analysis of kinematics demonstrates the sse - directed shearing - off of the hanging wall relative to the footwall along the penetrative mylonitic lineation 其变形相由变质核中心到上盘岩系(由深至浅)依次为高角闪岩相? ?绿片岩相? ?低绿片岩相? ?脆性剪切变形相,显示亚干核杂岩由中心向边部变形层次递减的特点。