摘要
本文根据584口探井资料结合现代沉积考察成果,对准噶尔盆地西北缘三叠—侏罗系沉积特征进行了研究,并在此基础上建立了各层相应的沉积模式:下三叠统百口泉组为旱地、半旱地—辫状河—曲流河—湖盆三角洲—湖沉积体系;中三叠统克拉玛依组为断崖扇—扇三角洲或辫状三角洲—湖沉积体系;上三叠统白碱滩组为扇三角洲—湖及湖底扇沉积体系;下侏罗统八道湾组为湿地扇—砾质网状河—网状河泛滥平原沉积体系。
Based on the data from 584 wild cats and the reconnaissance/survey results about recent sediments of the north-western margin in Junggar Basin, the sedimentary characteristics of its Triassic and Jurassic strata have been studied,on which appropriate sedimentation models layer by layer have been developed as follows: Baikouquan formation of Lower Triassic(T_1) could be a sequence of arid land/semiarid land-braided river-meander river-lake-basin delta-lacustrine deposit; Karamay formation of Middle Triassic(T_2) could be a se-quence of cliff fan of displacement-fan delta or braided delta-lacustrine deposit; Baijiantan formation of UpperTriassic (T_3) could be a sequence of fan delta-lake and lake-bottom fan deposit ; while Badaowan formation ofLower Jurassic (J_1) could be a sequence of humid fan-rudaceous/tophaceous braided stream-flood plain of thestream deposit.
出处
《新疆石油地质》
CAS
CSCD
北大核心
1992年第3期206-216,共11页
Xinjiang Petroleum Geology
关键词
准噶尔盆地
沉积
三叠纪
侏罗纪
Sedimentation model
Northwestern margin in Junggar Basin
Cliff fan of displacement
Humid fan
Braided river
Delta
Flood plain
