大兴安岭北部漠河逆冲推覆构造的特征及演化

Characteristics and Evolution of Thrust Nappe Structure in the Mohe Area,Daxing'anling

漠河逆冲推覆构造发育在上黑龙江盆地的西北侧,是漠河地区的主要构造样式。逆冲推覆构造在空间上由一系列规模大小不等、近平行排列的逆冲断层构成,剖面上表现为犁式逆冲断裂所构成的单冲式叠瓦状构造。按其岩石组合、变形变质特征和推覆体不同可划分为4条构造分带。推覆方向总体由NW向SE,具有前展式的扩展方式,运移距离大于4 km,形成于晚侏罗世中期—早白垩世中期。并在较为系统研究漠河逆冲推覆构造特征的基础上,探讨了其生成演化的过程。

The Mohe thrusting tectonics is developed on the north-western of the upper Heilongjiang Basin,it is the main structural styles in Mohe region.The thrusting tectonics is composed of a series of the scale size is different and nearly parallel thrust like plough shape in across section,profile performance for the plow-thrusts posed by the single-chong imbricated structures.According to lithology,metamorphism and deformation characteristics of different nappe can be divided into six sub-tectonic belt.The thrus...