陕西洛南蓟县系—寒武系变形变质研究

STUDY ON DEFORMATION AND METAMORPHISM OF JIXIAN-CAMBRIAN IN LUONAN, SHAANXI PROVINCE

本文主要通过野外对断裂带糜棱岩、劈理的观测和室内对变质矿物的光学测定,确定洛南地区蓟县系冯家湾组—寒武系发育三条韧性剪切推覆新层,一条韧性剪切推覆带,一个倒转向斜和一个倒转背科,变形期为晚加里东期,华力西期、后华力西期。

By observation on cleavages of mylonites in fault zones in field and optical measurements of metamorpnic minerals in laboratory, it is recognized that three ductile shear napping faults, a ductile shear napping zone, a overturned synclines and a overturned anticline were developed in Jixian Cambrian in Luonan area. The deformation periods are late Caledonian, Variscian,and post Variscian.