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Provenance analysis of the Paleogene Hetaoyuan Formation in southeastern Biyang Sag of Nanxiang Basin, Henan Province
Author(s): 
Pages: 115-124
Year: Issue:  1
Journal: Journal of Palaeogeography

Keyword:  Biyang SagPaleogeneHetaoyuan Formationprovenance analysisheavy mineralseismic reflections;
Abstract: 在层序地层格架的基础上,结合区域地质概况和前人研究成果,充分运用重矿物的组合特征、岩心观察描述的岩性序列特征、岩性及电性的横向变化特征、地震反射特征,结合砂岩厚度、砂地比的平面展布规律,对南襄盆地泌阳凹陷东南部古近系渐新统核桃园组的物源方向进行了研究.结果表明,泌阳凹陷东南部主要发育5个物源,其中主要物源有1个,为泌150-泌285井区的平氏物源,该物源对研究目的层各个层序的西南部沉积砂体均有控制;次要物源有4个,即泌102-泌239井区的杨桥物源、正南方向的泌151-泌251井区的魏庄物源、东南方向泌129井区的栗园物源、以及东北方向的泌319井区的栗园东北物源,这些次要物源仅对部分层序的沉积砂体有控制作用.
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