宁镇、茅山山脉微观构造变形及变形环境的探讨  

A STUDY ON THE MICROTECTONIC DEFORMATIONAND DEFORMATIONAL ENVIRONMENT INNINGZHEN AND MAOSHAN MOUNTAINS

作　　者：刘少峰[1] 庄培仁[1] 徐成彦 陈书平[2] 

机构地区：[1]中国地质大学 [2]石油大学

出　　处：《现代地质》1991年第2期157-163,T001,共8页Geoscience

摘　　要：宁镇,茅山山脉褶皱逆冲一推覆构造带的构造岩类型主要为碎裂岩系列,其次为糜棱岩系列。主要超微构造为位错构造。经计算,区内印支、燕山期古差应力值约为90~100MPa,应变速率为:3.1x10^(-14)≤(?)≤2.0x10^(-10)。构造变形环境为低温、高压、高应变速率环境,微观机制主要为位错滑移。The main type of tectonites in the belts of fold thrust - nappes in Ningzhen, Maoshan mountains is the cataclasite series, and then mylonite series. The main ultramicrostructures are dislocations. Through calculations, the palaeo-differential stress value in Indo -Sinian and Yanshanian epoch was about 90 ~ 100 MPa, the strain rates were: 3.1 × 10^-14≤ε≤2.0 × 10^-10. The environment of the tectonic deformation was characterized by low temperature, high pressure and high strain rates. The micromechanism was mainly dislocation slipping.

关 键 词：褶皱 逆冲 推覆构造 变形环境 

分 类 号：P542.3[天文地球—构造地质学]