吕梁地区临县东部汉高山群构造演化特征浅析  

Tectonic evolution characteristics of Hangaoshan Group in eastern Linxian, Lüliang area

作　　者：苟钧壹 何登发[1,2] Gou Junyi;He Dengfa(School of Energy Resources,China University of Geosciences(Beijing),Beijing 100083;Key Laboratory of Marine Reservoir Evolution and Hydrocarbon Enrichment Mechanism,Ministry of Education,Beijing 100083)

机构地区：[1]中国地质大学(北京)能源学院,北京100083 [2]海相储层演化与油气富集机理教育部重点实验室,北京100083

出　　处：《地质科学》2023年第1期240-247,共8页Chinese Journal of Geology(Scientia Geologica Sinica)

基　　金：国家重大专项课题项目(编号:技2021-90-1)资助。

摘　　要：吕梁地区汉高山群作为华北克拉通内第一套沉积盖层,其构造演化历程的研究对华北克拉通内中元古代裂谷盆地的形成与演化具有重要指导意义。本文选择吕梁地区临县东部汉高山地区的一条剖面,通过2D-Move模拟软件对该区内汉高山群及其同沉积的方山断裂进行反演与正演模拟。结果显示:该区在中元古代早期为一断陷盆地,随吕梁隆起的抬升,中寒武统海相沉积以角度不整合覆盖于汉高山群之上,在经历中生代构造反转后,方山断裂反向活化为逆断层,吕梁汉高山地区转变为挤压环境下的陆内造山带,汉高山群逐渐被抬升至地表后继而被剥蚀形成现今构造格局,表现了华北克拉通中部吕梁地区多期改造的特点。The Hangaoshan Group in the Lüliang area is the initial sedimentary cover in the North China Craton. The study of its tectonic evolution is of great guiding significance to the evolution of the Mesoproterozoic rift basin in the North China Craton. In this paper, we selected a profile of Hangaoshan area in the east of Linxian County, Lüliang area, modeling the inverse and forward tectonic evolution of Hanganshan Group and its synsedimentary Fangshan fault by 2D-Move software. The results showed that this area is a fault basin in the Early Mesoproterozoic, and then with the uplift of Lüliang Uplift, the Middle Cambrian marine sediments are covered on the Hangaoshan Group with angular unconformity. After experiencing the Mesozoic tectonic inversion, the Fangshan fault is reversely activated into a reverse fault,and the Lüliang Hangaoshan area is transformed into an inland orogenic belt in a compressive environment. The Hangaoshan Group is lately uplifted to the surface and gradually eroded to the current tectonic pattern, which shows the characteristics of multi-stage reformation in Lüliang area in the middle of North China Craton.

关 键 词：华北克拉通 吕梁隆起 汉高山群 中元古代裂谷盆地 

分 类 号：P542[天文地球—构造地质学]