塔里木盆地巴楚隆起断裂分期差异活动特征及其变形机理

Characteristics and deformation mechanism of staging differential fault activities in Bachu Uplift, Tarim Basin

杨勇 汤良杰 蒋华山 陈刚 谢大庆 李萌 曹自成

Yang Yong Tang Liangjie Jiang Huashan Chen Gang Xie Daqing Li Meng Cao Zicheng

油气资源与探测国家重点实验室, 北京 102249 2. 中国石油大学(北京)盆地与油藏研究中心, 北京 102249 3. 中国石化 西北油田分公司, 乌鲁木齐 830011

State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing 102249, China 2. Basin & Reservoir Research Center, China University of Petroleum, Beijing 102249, China 3. SINOPEC Northwest Oilfield Company, Urumqi, Xinjiang 830011, China

在对典型地震剖面解释和分析基础上，结合区域地质剖面的缩短量和缩短率分析，来确定塔里木盆地巴楚隆起断裂的主要活动期，并探讨断裂分期差异活动特征及其变形机理。巴楚隆起断裂活动主要发生在加里东中期、海西早期、海西晚期、喜马拉雅早期、喜马拉雅中期和喜马拉雅晚期。巴楚隆起断裂活动主要受区域大地构造背景、先存基底断裂、区域滑脱层等因素的控制。洋盆闭合和板块碰撞产生的挤压应力是断裂活动的动力来源。先存基底断裂控制后期断裂的发育位置和展布方向，区域性滑脱层控制断裂的发育和分布层位。

Based on the interpretation and analysis of the typical seismic profiles, we determined the activity phases of the faults in the Bachu uplift by calculating the amounts and rates of shortening of regional geological sections, and discussed the characteristics and deformation mechanism of staging differential activity. Fault activities took place mainly during the middle Caledonian, early Hercynian, late Hercynian, early Himalayan, middle Himalayan and late Himalayan. They were controlled by regional tectonic setting, pre-existing basement faults, regional detachment layer and some other factors. Compressive stress which generated by the closure of oceanic basin and the collision of plates was the dynamic source of the fault activities. The pre-existing basement faults controlled the position and orientation of the later stage faults. The regional detachment layer controlled fault development and distribution horizons.

国家自然科学基金项目（41172125，40972090），国家科技重大专项（2011ZX05002-003-001），国家重点基础研究发展计划“973计划”项目（2012CB214804），中国石油化工股份有限公司项目（P11086）和中国石化西北油田分公司项目（KY2010-S-053）共同资助。

https://doi.org/10.11781/sysydz201403275