内蒙古苏布格塔蓝闪石片岩基本特征及成因分析  

Basic characteristics and genetic analysis of glaucophane schist in Subugeta,Inner Mongolia

作　　者：张庆奎 邵学峰 关培彦 杨宾 赵明远 李安楠 吕凤祥 

机构地区：[1]辽宁省地质勘查院,辽宁大连116100

出　　处：《中国地质》2014年第4期1205-1214,共10页Geology in China

基　　金：中国地质调查局地质调查项目(1212011120668)资助

摘　　要：苏布格塔蓝闪石片岩赋存于奥陶纪哈拉哈河组地层中,岩石组合类型多样,据蓝闪石光学特征及电子探针分析结果,认为本区的蓝闪石属铁蓝闪石。蓝闪石片岩的标型矿物组合以蓝闪石+绿帘石+阳起石+多硅白云母+榍石为特点,由泥质碎屑岩变质重结晶形成,原岩形成环境为大陆边缘海盆地。其变质成因,属于与板块运动有关的区域低温中高压动力变质作用形成。The studied glaucophane schist is in the Ordovician Halahahe Formation of Subugeta, Inner Mongolia, and there are a variety of rock assemblage types. According to the optical characteristics and EMP analysis, the authors have come to the conclusion that the glaucophane schist is a kind of ferriglaucophane in the study area. The topomineral assemblage of glaucophane schist is characterized by glaucophane ＋ epidote ＋ actinolite ＋ phengite ＋ sphene. The schist was cemented and recrystallized by shaly clasolite, and the formation environment of native rock was the marginal-sea basin of the continent. The metamorphic origin belonged to the regional low-temperature/middle-high pressure dynamic metamorphism related to plate movement.

关 键 词：蓝闪石片岩 电子探针 标型矿物组合 边缘海盆地 板块运动 

分 类 号：P588[天文地球—岩石学]