新疆库车坳陷中部新近系-第四系沉积演化  

Sedimentary evolution of the Neogene-Quaternary deposits in the Kuqa depression,Xinjiang

作　　者：谢会文[1] 李勇[1] 钟大康[2] 雷刚林[1] 李鑫 杨宪章[1] 饶华文[1] 杨乾霞[4] 

机构地区：[1]塔里木油田公司勘探开发研究院,新疆库尔勒841000 [2]中国石油大学(北京),北京102249 [3]振华石油成都北方石油勘探开发技术有限公司,四川成都610500 [4]青海油田测试公司,甘肃敦煌736202

出　　处：《沉积与特提斯地质》2013年第3期10-15,共6页Sedimentary Geology and Tethyan Geology

基　　金：国家科技重大专项(2011ZX05003-004)资助

摘　　要：新疆库车坳陷发育巨厚的新近系-第四系沉积物。本文通过考察野外露头、观察岩心和岩屑、分析测井曲线和地震资料,研究了该沉积层序及其演化规律。库车坳陷新近系吉迪克组及康村组沉积时期为浅水氧化湖泊环境,自北向南发育扇三角洲-湖泊沉积体系,为均衡沉积;新近系库车组-第四系广泛发育冲积扇沉积,自下而上冲积扇的规模不断增大,代表了盆地填平补齐的过程。库车坳陷新近纪剧烈构造活动期应从库车组末期开始,第四纪早期构造活动达到最剧烈时期。The thick Neogene -Quaternary deposits are developed in the Kuqa depression, Xinjiang. The present paper focuses on the study of sedimentary sequences and their evolution on the basis of field outcrops, core observation, well logs and seismic data. During the deposition of the Neogene Jidike and Kangcun Formations, the Kuqa depression appeared as a shallow-water oxidized lake in which the fan delta-lake depositional systems were developed from north to south. Till the deposition of the Neogene Kuqa Formation to the Quaternary strata, the alluvial fan deposits occurred on a wide range of scales in the depression. It can be seen that the intense tectonization in the Kuqa depression during the Neogene should he initiated in the latest stage of the deposition of the Kuqa Formation, and culminated in the early stages of the Quaternary.

关 键 词：库车坳陷 新近系 沉积相 冲积扇 盆地充填 

分 类 号：P531[天文地球—古生物学与地层学]