特种油气藏2025，Vol.32Issue(3)：8-15,8.DOI:10.3969/j.issn.1006-6535.2025.03.002
塔里木盆地顺南—古隆地区断裂发育特征及成因机制
Development characteristics and genetic mechanism of faults in the Shunnan-Gulong Area,Tarim Basin
摘要
Abstract
To address the issue of differing understandings regarding the nature,evolutionary stages,and genetic mechanisms of the fault system in the Shunnan-Gulong Area,a study was conducted on the fault system in the study area through seismic interpretation,seismic attribute extraction,fault activity intensity statistics,and analysis of the regional tectonic background.The results show that the north-east-east-trending faults are extensional nor-mal faults formed during the early Caledonian passive continental margin stage,driven by north-west to south-east oriented extension from the opening of the Altyn Ocean.These faults were reactivated in the middle Caledonian pe-riod to form"P"fractures.The north-east-trending faults are widespread left-lateral strike-slip faults formed dur-ing the middle Caledonian compressional-transpressional stage,with stress originating from the north-west to south-east oriented compression generated during the closure of the Altyn Ocean.The north-north-west-trending faults are tensile fractures formed during the late Caledonian to middle Hercynian period due to basement strike-slip,with stress from the nearly south-north compression caused by the closure of the southern Tianshan Ocean.The segmen-ted activity differences in the Cheltenham Fault are the main reason for the segmented activity of the Tazhong No.1 Fault and the widespread development of north-east-trending compressional-transpressional strike-slip faults.The structural characteristics of strike-slip fault zones are crucial for reservoir size and hydrocarbon migration.This study provides a theoretical basis for analyzing the development process of strike-slip faults and their relationship with hydrocarbon accumulation in the Shunnan-Gulong Area,and laying a foundation for hydrocarbon exploration in the study area and its surroundings.关键词
塔里木盆地/顺南—古隆地区/走滑断层/伸展断层/成因机制Key words
Tarim Basin/Shunnan-Gulong Area/strike-slip fault/extensional fault/genetic mechanism分类
能源科技引用本文复制引用
黄诚,林波,张胜,王岳丰,于福生..塔里木盆地顺南—古隆地区断裂发育特征及成因机制[J].特种油气藏,2025,32(3):8-15,8.基金项目
中国石化科技部项目"顺北超深碳酸盐岩规模储集体发育模式与评价"(P21033-1)、"顺北超深碳酸盐岩高产富集规律与目标评价"(P21033-3) （P21033-1）
