Migration of paleo-uplift in southwestern Tarim Basin and its implications for orogenesis and reservoir development, NW China  

作　　者：YAN Jiakai CHEN Hanlin CHENG Xiaogan CHEN Yongquan ZENG Changmin CHEN Cai WU Hongxiang 

机构地区：[1]School of Earth Sciences,Zhejiang University,Hangzhou 310058,China [2]Research Center for Structures in Oil and Gas Bearing Basins,Ministry of Education,Hangzhou 310058,China [3]Exploration and Development Research Institute of Petro China Tarim Oilfield Company,Korla 841000,China

出　　处：《Petroleum Exploration and Development》2023年第1期99-110,共12页石油勘探与开发（英文版）

基　　金：Supported by the National Science and Technology Major Project(2017ZX005-008-01);Tarim Oilfield Company Project(041014120098).

摘　　要：Based on well horizon calibration,the typical seismic profiles in southwestern Tarim Basin were interpreted systematically,regional geological sections were established,and the regional denudation thickness of each tectonic period was restored.On this basis,the plane morphology maps of ancient structures of the Cambrian pre-salt dolomites in different periods were compiled,and the spatial distribution,development,evolution and migration of paleo-uplift in the late Early Paleozoic were analyzed.In the late Early Paleozoic,there existed a unified regional paleo-uplift widely distributed in southwestern Tarim Basin,which is called the southwestern Tarim plaeo-uplift.The“Tarim SW paleo-uplift”and“Hetian paleo-uplift”proposed in previous literatures are not independent,but the result of the spatio-temporal migration and evolution of the southwestern Tarim paleo-uplift identified in this paper.The southwestern Tarim paleo-uplift emerged at the end of Middle Ordovician,and took its initial shape with increased amplitude in the Late Ordovician.During the Silurian,the southwestern Tarim paleo-uplift rose steadily and expanded rapidly to the east,incorporating Pishan-Hetian and other areas,with the structural high locating in the Pishan-Hetian area.During the Devonian,the southwestern Tarim paleo-uplift began to shrink gradually,to a limited range in the Pishan-Hetian area in the southern part of the basin.During the Carboniferous,the southwestern Tarim paleo-uplift became an underwater uplift,that is,the paleo-uplift gradually died out.The southwestern Tarim paleo-uplift belongs to the forebulge of the southwestern Tarim foreland basin in the late Early Paleozoic,and its formation and evolution are related to the early Paleozoic orogeny of the West Kunlun orogenic belt in the south of the Tarim Basin.The migration of the southwestern Tarim paleo-uplift from the northwestern part of the southwestern Tarim Basin to the Pishan-Hetian area indicates the early Paleozoic orogenic process of the West Kunlun orogenic belt

关 键 词：PALEO-UPLIFT DENUDATION planar morphology of ancient structure spatio-temporal migration Early Paleozoic orogeny southwestern Tarim Basin 

分 类 号：P618.13[天文地球—矿床学]