摘要
根据野外露头、岩心观察和测井分析,在柴西南古近纪发现浊流和碎屑流2种重力流沉积。碎屑流以湖底扇的形式发育于山前滨浅湖带;浊流以浊积扇形式发育于半深湖中,这2种重力流在盆缘交替沉积。该区重力流沉积分为陡坡欠补偿型和缓坡过补偿型,前者形成近岸湖底扇+碎屑流—浊积扇沉积组合,后者形成扇三角洲—浊积扇沉积组合。
In this paper, based on outcrop observation, core observation and well logging analysis, two types of gravity flow deposits were found, including the turbidity and debris flow in Paleogene in the Southwest of Qaidam Basin. Debris flow developed in piedmont shore shallow lake in the form of sublacustrine fan, while turbidity cur- rent developed in half deep lake in the form of turbidity fan. The two kinds of gravity flow deposited alternately at the basin edge. Gravity flow depositing in the area can be divided into steep under - compensation and gentle slope compensation. The former formed sedimentary combination of near - shore sublacustrine fan, debris flow and tur- bidity fan, while the latter formed sedimentary combination of a fan - delta and turbidity fan.
出处
《重庆科技学院学报（自然科学版）》
CAS
2016年第5期14-19,共6页
Journal of Chongqing University of Science and Technology：Natural Sciences Edition
基金
中国石油天然气股份有限公司柴达木盆地二期专项"柴达木盆地建设千万吨油气田综合配套技术研究"课题一"柴达木盆地石油勘探领域评价与目标优选"(2011E-0301)
关键词
柴达木盆地
重力流
浊流
碎屑流
Qaidam Basin
gravity flow
turbidity current
debris flow
