巴彦乌拉山老变质岩系中的构造片岩特征及其形成机制  

Characteristics and Formation Mechanism of the Tectonic Schist in the Old Metamorphic Rock Series of Bayanwula Mountain

作　　者：刘燕翔[1] 庄丁源 师明元 陈志耕 

机构地区：[1]河北省地震局唐山中心台 [2]河北省地矿局国土资源勘查中心 [3]河北省地矿局第六地质大队 [4]河北地质大学地球动力与应用研究所

出　　处：《现代矿业》2017年第12期10-14,共5页Modern Mining

摘　　要：从宏观构造和显微构造的研究出发,探讨了广泛发育于巴彦乌拉山老变质岩系中的构造片岩特征及其形成机制。对石英、云母类等矿物的显微构造变形的分析揭示出区内构造片岩具有明显的脆—韧性过渡特征。巴彦乌拉山构造片岩是由早期的近水平顺层滑脱构造变形作用形成的,并经历了后期多期次韧性剪切作用产生的糜棱岩化作用的叠加改造。分析结果对于进一步研究巴彦乌拉山区域构造格架,恢复区域地质演化史有一定的借鉴价值。The characteristics and formation mechanism of the tectonic schist in the old metamorphic rock series of Bayanwula Mountain, from the study aspects of maerostructure and microstrueture. The analysis of microstructural deformation characteristics of quartz and mica minerals show that the brittle- ductile transition characteristics. The Baiyanwula Mountain tectonic schist is formed by the early near-hor- izontal slip structure deformations, and it is experienced the superposition transformation of the mylonitiza- tion action formed by the late stage ductile shearing effects. The above analysis results related to the tec- tonic schist in the old metamorphic rock series of Bayanwula Mountain can provide some reliable reference for the further study on the regional structural characteristics and restoration of regional geological history of the Bayanwula Mountain Area.

关 键 词：巴彦乌拉山 构造片岩 形成机制 

分 类 号：P588.3[天文地球—岩石学]