辽东湾地区古近系东营组二段沉积相特征  

THE CHARACTERISTICS AND DISTRIBUTION OF SEDIMENTARY FACIES OF THE MEMBER 2 OF DONGYING FORMATION OF PALEOGENE IN LIAODONG BAY

作　　者：段亮[1] 徐国盛[1] 李建平 周东红 郭永华 

机构地区：[1]"油气藏地质及开发工程"国家重点实验室成都理工大学,成都610059 [2]中海石油有限公司天津分公司勘探开发研究院,天津塘沽300452

出　　处：《物探化探计算技术》2011年第5期549-554,465,共6页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：国家科技重大专项(2008ZX05023-001-004-001)

摘　　要：以大量的地质、地球物理资料及前人研究成果为基础，运用沉积学原理和方法，详细地分析了辽东湾盆地东营组二段的沉积相特征。经分析认为，东营组二段虽整体为湖泊-三角洲沉积体系，但其下部与上部的沉积特征差异明显：下部以湖相环境为主，上部则主要为三角洲沉积。在综合了该区构造特征和水系发育特征后，编制了东二段下和东二段上的沉积相平面展布图，并指出，辽西低凸起北倾末端和辽中凹陷中南洼为最有利的勘探区带。Based on the geology,geophysics and predecessors studies and applying sedimentary principles and methods,this article makes a detailed analysis of the feature of sedimentary faces in Liaodong Bay's second member of Paleogene Dongying Formation.It is indicated that although the whole second member of Dongying Formation is lake-deltaic depositional system,the difference of the upper and lower parts of second member of Dongying Formation is obvious.The lower part mainly included lake system,while the upper part mainly included delta facies.After taking together the structural feature and development of water systems in this zone,the author draws up the distributing feature of sedimentary faces in both upper and lower parts of second member of Dongying Formation.Finally,this article forecasts that the end of north inclined in low swell of Liaoxi and south-central sub-sag of Liaozhong sag are the most favorable exploration targets.

关 键 词：辽东湾地区 古近系 东营组二段 沉积亚相 有利勘探区带 

分 类 号：P588.2[天文地球—岩石学]