地质通报2026，Vol.45Issue(2)：529-548,20.DOI:10.12097/gbc.2023.12.025
新疆塔里木盆地西部东河塘组地层时代、物源及其成藏可能性讨论
Stratigraphic age,detrital provenance evolution and reservoir potential of the Donghetang Formation in the western Tarim Basin,Xinjiang
摘要
Abstract
[Objective]The Tarim Basin,situated as a significant oil and gas exploration and development research region in China,has undergone a multifaceted tectonic evolution over time.Nonetheless,the existing studies have not adequately acknowledged the potential reservoirs within the Silurian-Devonian system in the central and western sectors of the basin.[Methods]In this research paper,our focus is on core samples extracted from the Donghetang Formation,obtained from B6 well,K1 well and Y2 well.Our objective is to identify the depositional characteristics,material source evolution and age attribution of the Donghetang Formation.This analysis combines various factors,including the clastic fractions of sandstones,heavy minerals,zircon U-Pb ages,and rare earth elements.[Results]Our study reveals that the Donghetang Formation belongs to the coastal-shallow sandy coastal phase.The zircon U-Pb ages are distributed into three groups:485～393 Ma,995～665 Ma,and 2064～1560 Ma.Heavy minerals and detrital zircon data show that the host rocks are primarily composed of acidic magmatism,with a smaller presence of intermediate-basic magmatism or granitic pegmatites.[Conclusions]The sources of the Donghetang Formation are primarily attributed to the West Kunlun Orogenic Belt and the Tabei Uplift.By comprehensively determining the sedimentary features,stratigraphic assignment,and source evolution of the Devonian Donghetang Formation in the western Tarim Basin,we can not only provide information on the evolution of the basin,but also provide crucial data support for future oil and gas exploration endeavors.关键词
塔里木盆地/东河塘组/地层时代/物源分析/碎屑锆石U-Pb测年/新疆Key words
Tarim basin/the Donghetang Formation/Stratigraphic age/Provenance analysis/Detrital zircon U-Pb dating/Xinjiang分类
天文与地球科学引用本文复制引用
杨素举,张玉修,刘浩宇,姜忠正,胡杰,杨佩琳,唐荣,胡俊成,陈兰,李智武..新疆塔里木盆地西部东河塘组地层时代、物源及其成藏可能性讨论[J].地质通报,2026,45(2):529-548,20.基金项目
中国石油化工股份有限公司西北油田分公司课题《塔里木盆地重点井古地温场热年代学分析》(编号:34400008-22-ZC0607-0044)、中国科学院大学大创计划《塔里木盆地西部泥盆系克兹尔塔格组沉积体系数字露头和虚拟仿真》(编号:20214001399)和中国科学院大学在线教学资源建设项目(编号:UCAS-OC-G2023035) Supported by the project of Northwest Oilfield Company,Sinopec(No.34400008-22-ZC0607-0044)the Undergraduate Innovation and Entrepreneurship Training Program of the University of Chinese Academy of Sciences(No.20214001399),and the Online Teaching Resource Construction Project of the University of Chinese Academy of Sciences(No.UCAS-OC-G2023035) （编号:34400008-22-ZC0607-0044）
