吉木萨尔地区仓房沟群高分辨率层序地层学研究  

High Resolution Sequence Stratigraphy of Cangfanggon Group in Jimusaer Area

作　　者：陈志勇[1,2] 肖传桃[1] 张伟道[3] 刘莉[3] 

机构地区：[1]中国地质大学(武汉)地球科学学院 [2]青海油田分公司,甘肃敦煌736202 [3]长江大学地球科学学院

出　　处：《石油天然气学报》2006年第2期12-16,共5页Journal of Oil and Gas Technology

摘　　要：在对地表露头的微相分析基础上,对吉木萨尔地区仓房沟群进行高分辨率层序地层学研究。在仓房沟群内识别出由V级层序界面控制的短期基准面旋回层序,按结构类型的不同划分为向上“变深”的非对称型、向上变浅的非对称型、对称型等3种类型,并阐述了各类短期基准面旋回层序的砂体发育特征。在此基础上,根据短期基准面旋回层序的垂向序列、岩性岩相组合、结构类型及叠加样式等特征,对研究区仓房沟群中期、长期基准面旋回层序进行了划分,其中,中期基准面旋回层序8个,长期基准面旋回层序4个,最终建立了研究区高分辨率层序地层格架。High resolution sequence stratigraphy of Cangfanggon Group in Jimusa'er Area is studied based on a microfacies analysis of surface outcrop.Short-term base-level cyclic sequences controlled by sequence interface V are recognized in Cangfanggon Group,are divided into 3 basic types of structures,such as upward depening non-symmetry,upward thining non-symmetry and symmetry.The characteristics of sandbody growing of each short-term base-level cyclic sequence is described.On the basis stated above,according to the characters of its vertical sequence,lithologic facies assemblage,structural type and its stacking pattern,the middle-term and long-term base-level cyclic sequences of Cangfanggon Group are divided in the study area,in which 8 middle-term and 4 long-term base-level cyclic sequences are divided.Eventually a high resolution framework of sequence stratigraphy is established.

关 键 词：高分辨率层序地层学 短期基准面旋回层序 中期基准面旋回层序 仓房沟群 新疆吉木萨尔 

分 类 号：P535[天文地球—古生物学与地层学]