粤西北连州地区印支.doc

粤西北连州地区印支



摘要: 本文结合连州地区开展的四幅1∶5万区调工作的成果,对构造纲要图、叠加褶皱和构造变形的样式分析。提出一种观点,认为华南地区存在印支期NWW向褶皱与燕山期NNE或NE向褶皱的横跨-斜跨叠加,粤西北-湘东南印支运动构造线为NWW向,而非NNE向,区域挤压应力方向为NNE向,而非NWW向。粤西北连州地区在燕山期NNE向郴―怀岩浆岩断褶带中残留有NWW向印支期构造。
本文采集自网络,本站发布的论文均是优质论文,供学习和研究使用,文中立场与本网站无关,版权和著作权归原作者所有,如有不愿意被转载的情况,请通知我们删除已转载的信息,如果需要分享,请保留本段说明。
关键词: 印支运动; 多期变形; 构造线方向
Study on the Deformation of Indosinian to Yanshanian Movement in LianZhou ,Northwest Guangdong
JIA Lei
Geological Survey of Guangdong Province GuangZhou,China 510080
Abstract: Combined with working achievement of four 1∶50,000 regional geological survey carried out in Lianzhou, the paper analyzed the pattern of structure outline map, superposed fold and tectonic deformatio
n and proposed that Indodinian phase fold in NWW direction superposed on cross-oblique cross of Yanshanian fold in NNE or NE direction, the tectonic line of Indosinian movement of Northwest Guangdong- Southeast Hu’nan was in NWW direction rather than NNE direction, and the regional crushing stress was NNE direction rather than NWW direction. The residual Indosinian tectonic existed in the Yanshanian NNE direction Bin-Huaiyan Jiangyan fault-fold zone in Lianzhou, Northwest of Guangdong.
Keywords: Indosinian movement; multi-phase deformation; tectonic line direction
早中生代是华南地区大地构造背景发生重要转折、构造动力体制发生剧烈变动的时期,华南地区该时期构造演化争议颇多。印支造期构造线方向与区域应力挤压方向,湘粤存在不同观点。一种观点认为,湘东南印支运动构造线为NNE向,区域