华东地质2026，Vol.47Issue(2)：306-315,10.DOI:10.16788/j.hddz.32-1865/P.2024.09.006
下扬子无为凹陷北东缘构造演化分析及亚二级构造单元划分
Structural evolution and sub-secondary tectonic units division of northeast margin in Wuwei Depression,the Lower Yangtze region
摘要
Abstract
Due to the complex tectonic of the Lower Yangtze region,oil and gas exploration in the Meso-zoic and Paleozoic strata have not been achieved with significant breakthrough.As the advancement of the oil and gas exploration revealed enormous potential for shale gas on the northeast margin of the Wuwei Depression,it's urgent to delineate sub-level tectonic units.Through 2D seismic and other geological works on the northeast edge of the Wuwei Depression,the deep stratigraphic geological structure was preliminarily determined.Based on faults and structural contour lines,six sub-secondary tectonic units were delineated.Combined with geological da-ta,the tectonic evolutionary stages of the Wuwei Basin are analyzed.Research indicates that the northeast margin of the Wuwei Depression has generally undergone stable oscillation,compressional thrust,and extensional rifting periods,overall presenting a structural pattern of"two depressions sandwich one uplift".This study will pro-vide technical support for the subsequent fine oil and gas exploration in the Wuwei Depression.关键词
下扬子/无为凹陷/构造单元/地震勘探Key words
Lower Yangtze region/Wuwei Depression/tectonic unit/seismic exploration分类
天文与地球科学引用本文复制引用
陈同刚,汪玉玲,陈杰..下扬子无为凹陷北东缘构造演化分析及亚二级构造单元划分[J].华东地质,2026,47(2):306-315,10.基金项目
安徽省公益性地质工作"无为凹陷深部构造样式解析及含气目的层识别(编号:2022-g-2-3)"项目资助. （编号:2022-g-2-3）
