辽西医巫闾山变质核杂岩构造特征及其岩石组构的动力学分析

通过研究将辽西医巫闾山变质核杂岩构造要素划分为:变质核、拆离断层、中间过渡层、盖层和医巫闾山背形,并简述了其地质特征.采用X射线衍射法对医巫闾山花岗岩及周围不同时代岩石的不同层次变形构造开展了岩石组构特征研究,确定了韧-脆性构造变形时的力学性质和主应力方位,对变质核杂岩的形成演化进行了运动学和动力学分析.

Tectonic Features of Metamorphic Core Complexes in Yiwulushan Area, Liaoning Province and a Dynamic Analysis of Rock Fabrics

We divide structural elements of the metamorphic core complexes in the Yiwulushan into five parts,namely,the metamorphic core complexes, the fault, the middle passage bed, the cover rock, and the Yiwulushan antiform, with a description given concerning geological features of the metamorphic core complexes. Rock fabric studies were carried out by means of X-ray diffraction method on layered deformation structures of rocks of different ages in Yiwulushan Mountain area. Mechanical properties and major stress orientations in the process of ductifle-brittle deformation were determined. A kinetic and dynamic analysis was also made on the formation and evolution of the deformation structures in the metamorphic core complexe of the Yiwulushan Mountain.