摘要
衡山变质核杂岩体由元古代深交质岩和燕山期复式花岗岩体组成，其西缘的界牌剥离断层是区域深断裂的一部分。断裂下盘分布长为２６ｋｍ、宽１～３ｋｍ的构造—混合岩带，具有明显韧性变形特征，变形时代始于晚白垩世，结束于新生代。断裂上盘分布元古代浅变质岩和中新生代红盆。这是一个具有双层结构的比较典型的变质核杂岩体。
The metamorphic nucleus complex in Hengshan is composed of the deep metamorphicrock of Proterozoic era and the complex granite mass in Yanshan Period,the desquamation fault in thewestern edge of Jiepai is a part of the regional deep rift.The structure- migmatite zone with its length26 km,width 1～3km in the lower part of the rift has the clear feature of tenacity deformation,thedeformation epoch begins from K_2 and ends in the cenozoic era. The epimetamorphic rock of proterozoicera and red basin of middle cenozoic era are distributed in the upper part of the rift.This is a very typi-cal metamorphic nucleus complex with two-layer structure.
出处
《华东地质学院学报》
1994年第1期18-22,共5页
Journal of East China Geological Institute
关键词
变质核杂岩
剥离断层
构造特征
metamorphic nucleus complex
desquamation fault
Hengshan
