辽宁建昌养马甸子韧性剪切带基本特征

详细信息

收稿日期: 2011-07-04

修回日期: 2011-08-16

刊出日期: 2011-10-31

CHARACTERISTICS OF THE YANGMADIANZI DUCTILE SHEAR ZONE IN JIANCHANG, LIAONING PROVINCE

Received Date: 04 July 2011

Revised Date: 16 August 2011

Publish Date: 31 October 2011

摘要: 在辽宁西部建昌县查家店-养马甸子-回流水一带，发育有长度11.5 km、宽约1 km的韧性剪切带.通过多次实地调查，根据宏观的SC组构和镜下的旋转应变构造分析，判断养马甸子韧性剪切带为右行剪切机制，剪切位移1780 m.该韧性剪切带发育在新太古代麻计沟单元花岗岩中，而东侧多处可见中元古代长城纪高于庄期堆积物呈角度不整合覆于其上，从而确定该韧性剪切带形成时代的下限为新太古代晚期，上限为中元古代.
- 韧性剪切带 /
- 右行剪切 /
- 养马甸子 /
- 辽宁省
Abstract: An 11.5 km long and 1 km wide ductile shear zone is developed in Zhajiadian-Yangmadianzi-Huiliushui area of Jianchang County, Western Liaoning Province. Based on field surveys, with petrofabric study and microscopic rotational strain analysis, the Yangmadianzi ductile shear zone is decided to be right-lateral shearing mechanism, with 1780 m shearing displacement. The ductile shear zone occurs in the granite of Neoarchean Majigou unit, which is covered unconformably by the accumulation of Mesoproterozoic Changcheng system, suggesting that the forming period of the ductile shear zone should be from late Neoarchean to Mesoproterozoic.
- ductile shear zone /
- right-lateral shearing /
- Yangmadianzi /
- Liaoning Province