哥伦比亚OMBU区古近系Em组层序地层研究SEQUENCE STRATIGRAPHY OF THE PALEOGENE Em FORMATION IN OMBU AREA,COLUMBIA
王伟
摘要(Abstract):
综合利用地震、测井等地质资料,运用层序地层学方法和技术,建立了层序地层格架和对比模式,对研究区古近系Em组地层的发育展布特征以及沉积环境进行了研究。Em组顶底均为区域上的不整合面,内部划分为两期基准面升降体系域。构造运动和沉积物供应控制下的基准面升级使得沉积初期研究区发育辩状河-曲流河沉积体系,至晚期演变为曲流河沉积体系。
关键词(KeyWords): 层序地层;基准面;可容空间;河流相;前陆盆地;地层对比;古近系;哥伦比亚;南美洲
基金项目(Foundation):
作者(Author): 王伟
DOI: 10.19839/j.cnki.dcxzz.2012.03.014
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