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柴达木盆地古近系沉积相研究

Journal of China University of Petroleum(2014)

Cited 23|Views9
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Abstract
综合利用野外露头剖面、钻井剖面、岩心以及测井、地震等多种资料,采用单因素分析多因素综合作图的定量岩相古地理研究方法,以三级层序为单元对柴达木盆地古近系沉积相进行综合研究.结果表明:柴达木盆地古近系发育冲积扇、辫状河、洪泛平原、扇三角洲、辫状河三角洲、湖泊和浊积扇7种沉积相类型;受盆地构造演化作用的控制,柴达木盆地古近系沉积经历了水体由浅变深的演化过程;阿尔金山西段的山前陡坡带主要发育扇三角洲-浊积扇-湖泊沉积体系,阿尔金山中段的山前缓坡带主要发育冲积扇-辫状河-辫状河三角洲-湖泊沉积体系,柴北缘及柴东地区主要发育辫状河-洪泛平原沉积体系.
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Key words
Qaidam Basin,Paleogene,sedimentary facies evolution,single factor analysis and multifactor comprehensive mapping method,quantitative sedimentary facies
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