走滑型断裂制约的台阶式构造地貌:以哈尔里克山为例  

Stepped Landforms Formed by Strike-slip Faults:A Case Study of the Harlik Mountain

作　　者：周亚波 赵子豪 王国灿[1,3] 申添毅[1] 祝成宇 陈越 王玮 ZHOU Yabo;ZHAO Zihao;WANG Guocan;SHEN Tianyi;ZHU Chengyu;CHEN Yue;WANG Wei(School of Earth Sciences,China University of Geosciences(Wuhan),Wuhan 430074,Hubei,China;Power China Huadong Engineering Corporation Limited,Hangzhou 311122,Zhejiang,China;Geological Survey Research Institute,China University of Geosciences(Wuhan),Wuhan 430074,Hubei,China;Hangzhou No.2 High School of Zhejiang Province,Hangzhou 310059,Zhejiang,China)

机构地区：[1]中国地质大学(武汉)地球科学学院,湖北武汉430074 [2]中国电建集团华东勘测设计研究院有限公司,浙江杭州311122 [3]中国地质大学(武汉)地质调查研究院,湖北武汉430074 [4]浙江省杭州第二中学,浙江杭州310059

出　　处：《大地构造与成矿学》2025年第2期257-270,共14页Geotectonica et Metallogenia

基　　金：国家自然科学基金项目(41972208、42172251);中国地质调查局地质调查项目(DD20179607、DD20160060)联合资助。

摘　　要：中亚地区中生代广泛发育的夷平面是地貌演化的重要参考面。尽管前人对古夷平面的形成与解体时间进行过大量的讨论,但对于导致古夷平面解体的构造机制的研究相对有限。本文利用30 m分辨率的数字高程数据,对哈尔里克山坡度、起伏度和高程条带剖面进行了提取和分析,并结合野外构造解析,揭示了哈尔里克山南坡存在明显的以古夷平面为基础的三级台阶式构造地貌,这些台阶边界均受到NWW向的右旋走滑断裂控制。结合有关低温热年代学研究成果认为,东天山中‒新生代存在多阶段隆升成山过程,其中晚白垩世的右旋走滑断层活动导致古夷平面的解体,形成台阶式构造地貌,但位移量有限,并未导致哈尔里克山的主体崛起。哈尔里克山的主体崛起以及夷平面的掀斜主要受控于新生代戈壁‒天山左旋转换挤压断裂系统。The widely distributed planation surfaces in the Tianshan region,developed during the Mesozoic,are vital for deciphering the geomorphic generation and evolution of the Tianshan orogenic belt.The formation and disintegration times of planation surfaces have been extensively investigated.However,research on the tectonic mechanisms of planation surface disintegration is rare.In this study,the 30 m resolution digital elevation data were extracted and used to analyze the slope,relief,and elevation band profiles of Harlik Mountain.Based on detailed field structural analyses of ancient planation surfaces,we revealed a distinct three-tiered stepped structural landform on the southern slope of Harlik Mountain.The boundaries of these tiers were controlled by NWW right-lateral strike-slip faults.By integrating the results of low-temperature thermochronological studys,we propose that the eastern Tianshan underwent multi-stage uplift during the Mesozoic and Cenozoic eras.The right-lateral strike-slip fault activity in the Late Cretaceous lead to the disintegration of the planation surfaces and the formation of the stepped structural landform,but did not led to the rise of the main body of the Harlik Mountain.The rise of the present Harlik Mountain and the tilting of the planation surfaces were mainly controlled by the Cenozoic Gobi-Tianshan left-lateral transpressional fault system.

关 键 词：东天山 哈尔里克山 走滑断层 台阶式构造地貌 夷平面 

分 类 号：P548[天文地球—构造地质学]