川东北南江地区构造样式及构造演化.pdf

油气地球物理 2016年7月 PETROLEUM GEOPHYSICS 第14卷 第3期 川东北南江地区构造样式及构造演化 1 2 2 1 1 1 韩 波 ，高林 ，钟箐华 ，任瑞军 ，李艳菊 ，石秀 （1.胜利油田分公司物探研究院，山东 东营 257022 ；2.中国石化勘探分公司，四川 成都 610041 ） 摘要：南江地区可划分为3 个构造层、4 个构造带，不同构造带构造样式有所不同。剖面上可划分为叠瓦扇、逆冲 三角带、断展褶皱等几何样式；平面上具有斜列（雁行）、斜接、平行、正交4 种组合样式。构造演化表明，该区加里 东运动早期已具潜伏隆起雏形，在中三叠世之前保持稳定的构造形态；晚三叠世至今，随挤压作用的增强，隆起 形态逐渐明显；在晚燕山—喜马拉雅运动中最终形成了北部叠瓦冲断带、南部滑脱褶皱带的构造体系。 关键词：构造样式；构造演化；南江地区 StructuralStructural stylestyle andand evolutionevolution inin thethe NanjiangNanjiang areaarea ofof thethe northeastnortheast ofof SichuanSichuan 1 2 2 1 1 1 HAN Bo , GAO Lin , ZHONG Jing-hua , REN Rui-jun , LI Yan-ju , SHI Xiu ( 1. Geophysical Research Institute of Shengli Oilfield Branch Co., Dongying, Shandong, 257022, China; 2. Exploration Branch Co., SINOPEC, Chengdu Sichuan 610041, China) Abstract:Abstract: Nanjiang area can be divided into three structural layers and four structural belts, the different structural belt has different structural styles. It contains the styles of imbricate fan, thrust triangle zone structure and fault-propagation fold in vertical, and the styles of diagonal, juxtaposed, parallel and orthogonal combination in horizontal direction. The structural evolution shows that the embryonic uplift was formed in the early of Caledo- nian movement and the structural shape was kept until the middle of Triassic. With the increase of compression de- formation from the late of Triassic to today, the uplift was upheaved gradually, and it eventually formed the tecton-