塔里木盆地震旦纪地层—构造特征  

Stratigraphic and structural characteristics of Tarim Basin in the Sinian Period

作　　者：段云江[1] 黄少英[1] 罗彩明[1] 王振鸿[1] 娄洪 石磊[1] 袁瑞[1] 姚琨 张星[1] 蒋俊[1] 周思宇 张文[1] Duan Yunjiang;Huang Shaoying;Luo Caiming;Wang Zhenhong;Lou Hong;Shi Lei;Yuan Rui;Yao Kun;Zhang Xing;Jiang Jun;Zhou Siyu;Zhang Wen(Institute of Exploration and Development,Petrochina Tarim Oilfield Compamy,Koral,Xinjiang 841000)

机构地区：[1]中国石油塔里木油田公司勘探开发研究院,新疆库尔勒841000

出　　处：《地质科学》2022年第2期341-355,共15页Chinese Journal of Geology(Scientia Geologica Sinica)

基　　金：国家重点研发计划项目“塔里木盆地盐下超深层油气分布规律及有利勘探区带评价”(编号:2019YFC0605505)资助。

摘　　要：通过塔里木盆地盆缘露头区震旦系和盆内钻井岩心震旦系的对比,辅以全盆地42条地震大剖面以及多块三维地震资料和盆内各构造区块的二维地震资料解释成果,探讨了盆内震旦系岩性特征、分布范围以及构造样式,同时结合大地构造背景恢复震旦纪早期原型盆地及构造格局。塔里木盆地震旦系主要分布在盆地北部,向中央隆起带尖灭;盆地西南缘构造活动强烈,震旦系可能遭受抬升剥蚀;发育伸展—挤压构造旋回,具有南北分区的构造特征;发育地堑型、伸展断陷型、多米诺型和反转型4种构造样式。盆地北部由大陆裂谷转变为克拉通内坳陷,形成板内坳陷,为震旦系主要的沉积中心。In this paper, we applied an integrated dataset of the Sinian drilling cores and the basin-edge field outcrops to clarify the Sinian lithologic characteristics, strata distribution, and structural pattern of the basin, accompanied by the interpretation results of 42 basin-framework seismic sections, multiple 3D seismic surveys and 2D seismic data of basin structural units.Meanwhile, we restored the Tarim prototype basin and structural pattern combined with the geotectonic background during the early Sinian. The results suggest that the Sinian of the Tarim Basin is primarily distributed in the north of the basin and pinches out to the central uplift zone. Intense tectonism occurred in the southwest margin and may result in the uplift and denudation of the Sinian strata. An extension-compression tectonic cycle was developed during the Sinian, which was characterized by north-south zoning. Four structural patterns were recognized, including graben pattern, extensional faulted pattern, domino pattern and inversion pattern. The northern part of the basin altered from continental rift to intra-cratonic depression,forming an intraplate depression, which became the main deposition center of the Sinian.

关 键 词：塔里木盆地 震旦纪 坳陷盆地 断裂样式 

分 类 号：P542[天文地球—构造地质学]