摘要
对准噶尔盆地腹部具有代表性的车莫古隆起进行了构造演化期次划分,认为它主要经历了初始发育(J1b-J1s1)、水下隆升(J1s2-J2x)、剥蚀改造(J3)、稳定沉降(K-E)和掀斜改造(N-Q)等5个发育阶段。对侏罗系砂体发育和展布起决定性作用的初始发育阶段、水下隆升阶段和剥蚀改造阶段进行重点分析,研究不同阶段古隆起对陆源碎屑沉积物分布的影响,建立研究区正常沉积、超覆和风化改造等3种地质作用所产生的砂体结构地质模型,正确认识该区不同层位的砂体展布形态,从而对寻找有利储集层、有利聚油圈闭起到指导作用。
Chemo paleo-uplift is a representative structure in hinterland of Junggar basin,which underwent 5 tectonic evolution episodes or stages.They are initial growth stage（J1b-J1s1）,subaqueous uplifting stage（J1s2-J2x）,denudation and reconstruction stage（J3）,stable subsidence stage（K-E） and tilting reconstruction stage（N-Q）.The former three stages are of crucial effects on the Jurassic sand development and distribution.By study of influences of the paleo-uplifts in different stages on terrigenous detrital deposit distribution,three sand structural geologic models for normal sedimentation,overlap and denudation are developed.The results may have the indicative roles on proper recognizing sand distribution in horizons and finding out favorable petroleum reservoirs and traps in this area.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2012年第2期139-141,共3页
Xinjiang Petroleum Geology
基金
国家科技重大专项(2011ZX05002-002)
关键词
准噶尔盆地
车莫古隆起
构造演化
砂体结构
地质模型
超覆
削蚀
Junggar basin
Chemo paleo-uplift
tectonic evolution episode
sand structure
geologic model
overlap
denudation
