潜江凹陷潜江组高分辨率层序地层的研究  

High-resolution Sequence Stratigraphy of the Qianjiang Formation in Qian Jiang Depression

作　　者：刘宇琦[1] 李建明[1] 刘云生[2] 张广英[2] 

机构地区：[1]长江大学地球科学学院油气资源与勘探技术教育部重点实验室(长江大学),湖北荆州434023 [2]江汉油田分公司勘探开发研究院,湖北潜江433123

出　　处：《石油天然气学报》2009年第2期219-221,共3页Journal of Oil and Gas Technology

摘　　要：运用高分辨率层序的基本理念与原理,结合潜江凹陷潜江组测井、地震及岩心资料,将潜江组划分为8个三级旋回层序,同时建立了该凹陷高分辨率层序地层学模式。潜江组沉积时期,潜江凹陷为一北陡南缓的箕状凹陷,受沉积物源分布和古地形的影响,潜江组各层序发育时岩性分布各有差异,除凹陷北部及西北部为碎屑岩分布区外,其他大部分地区则被盐岩、泥膏岩所占据。因此,在进行层序地层研究时,分为碎屑岩层序和盐岩层序2种沉积类型。By using the basic concept and principle of high-resolution sequence, eight third-order sedimentary cycles were classified in Qianjiang Formation according to a comprehensive research of log data, seismic data and core samples. And a high-resolution sequence stratigraphic framework pattern in Qianjiang Depression was established. In the sedimentation period of Qianjiang Formation, Qianjiang Depression was a dustpan-like sag. Affected by the distribution of sedimentary sources and the paleotopography, the lithologic distributions were different when the sequences of Qianjiang formation developed. Except that the north and the northwest of the depression were clastic rock distribution areas, the other areas of the depression were dominated by salt rock and gypsiferous marl. So in the research of sequence stratigraphy, it is divided into clastic rock sequence and salt rock sequence.

关 键 词：潜江凹陷 潜江组 高分辨率层序地层学 碎屑岩层序 盐岩层序 

分 类 号：P618.13[天文地球—矿床学]