塔里木盆地中-新元古代沉积环境分析  

Meso-Neoproterozoic Sedimentary Environment Analysis in Tarim Basin

作　　者：程明[1,2,3,4] 张弘强 吕惠贤 周思宇[1,2,3,4] Cheng Ming;Zhang Hongqiang;Lv Huixian;Zhou Siyu(Exp.&Dev.Research Inst.,Tarim Oil Company,PetroChina,Korla,Xinjiang,841000,China;R&D Center for Ultra-deep Complex Reservoir Exp.&Dev.,CNPC,Korla,Xinjiang,841000,China;Engineering Research Center for Ultra-deep Complex Reservoir Exp.&Dev.,Xinjiang Uygur Autonomous Region,Korla,Xinjiang,841000,China;Xinjiang Key Laboratory of Ultra-deep Oil and Gas,Korla,Xinjiang,841000,China;Bureau of Geophysical Prospecting Inc.CNPC,Zhuozhou,Hebei,072751,China)

机构地区：[1]中国石油塔里木油田分公司勘探开发研究院,新疆库尔勒841000 [2]中国石油天然气集团有限公司超深层复杂油气藏勘探开发技术研发中心,新疆库尔勒841000 [3]新疆维吾尔自治区超深层复杂油气藏勘探开发工程研究中心,新疆库尔勒841000 [4]新疆超深油气重点实验室,新疆库尔勒841000 [5]中国石油东方地球物理勘探有限责任公司,河北涿州072751

出　　处：《新疆地质》2024年第4期502-507,共6页Xinjiang Geology

基　　金：中国石油科技专项超深层碎屑岩大中型油气田形成条件与有利区评价(2023ZZ14YJ01);国家重点研发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项目(2019YFC0605505)共同资助。

摘　　要：在塔里木盆地中—新元古代古地理分析中,首次引用重磁电资料,据盆地非地震资料确定中元古界长城系、蓟县系、新元古界残余地层厚度图、断裂分布图等,明确了剥蚀区、地层尖灭线和盆地隆凹平面分布。收集整理了盆地周缘库鲁克塔格、阿尔金、铁克里克等地露头岩相资料,将盆地周缘海相沉积延展到盆地内部,完成了塔里木盆地中—新元古界长城系、蓟县系、青白口系沉积环境分析。长城纪塔里木盆地巴楚、塔东南为古陆,周缘存在陆源碎屑沉积,环绕古陆的库鲁克塔格、阿尔金、铁克里克、西昆仑为台地相碳酸盐岩沉积。蓟县纪塔里木盆地北部、南部和巴楚地区为古陆,周缘铁克里克等地为滨浅海沉积,库鲁克塔格、阿尔金、西昆仑为台地相沉积。青白口纪塔里木盆地内部满加尔凹陷存在滨浅海沉积,塔里木板块与古澳洲板块及古印度板块之间均发育青白口系,塔里木盆地南部中央隆起带处于隆起剥蚀环境。中—新元古代塔里木板块在多次聚敛与伸展中整体逐渐隆升,陆地面积不断扩大。建议加强非地震资料收集及地质解释工作,并开展中—新元古界野外露头的调查研究,逐步丰富盆地中—新元古界地质资料,为油气超深勘探奠定良好的地质基础。During the analysis on Meso-Neoproterozoic paleogeography in Tarim basin,gravity,magnetic and electric exploration data are used for the first time,residual strata thickness maps and fault distribution of Mesoproterozoic Changcheng,Jixian System and Neoproterozoic era are compiled from Tarim basin’s non-seismic exploration data.Eroded area,stratum pinchout line and uplift-depression distribution of Changcheng and Jixian System are clarified.Outcrops’lithofacies data of Kuruktag,Altyn Tagh,Tiklik in peripheral Tarim basin are collected and complied,marine deposit of peripheral basin was stretched to interior basin,sedimentary environment analysis of Tarim basin is carried out on Meso-Neoproterozoic Changcheng,Jixian and Qinbaikou period.Bachu,southeastern Tarim interior Tarim basin are ancient continents during Changcheng period,terrestrial clastic deposits exist in the periphery.Kuruktag,Altyn Tagh,Tiklik,west Kunlun around ancient continents are platform facies carbonate rock deposition environment.During Jixian period northern and southern Tarim basin and Bachu area are ancient continents,the periphery such as Tiklik are coastal shallow sea deposits.Kuruktag,Altyn Tagh,west Kunlun are platform facies deposits.During Qinbaikou period Manjiaer sag interior Tarim basin is coastal shallow sea deposit,Qinbaikou strata is also existed between Tarim plate and ancient Australia plate,and also between Tarim plate and ancient Indian plate,the central uplift zone in southern Tarim basin is in uplift erosion environment.The whole Tarim plate rised gradually in multiple convergence and extension during Meso-Neoproterozoic era,land area continued to expand.Non-seismic data acquisition and geological interpretation should be strengthened in the future,and the analysis on field outcrops in Meso-Neoproterozoic era should be carried out,which can enrich gradually Meso-Neoproterozoic geological data in the Tarim basin,at last establish good geological foundation for ultradeep petroleum exploration.

关 键 词：塔里木盆地 元古宇 古地理 沉积环境 

分 类 号：P534.3[天文地球—古生物学与地层学] P531[天文地球—地质学]