闵桥油田阜宁组的构造特征和构造演化  

TECTONIC CHARACTERISTIC AND TECTONIC EVOLUTION OF THE FUNING FORMATION IN MINQIAO OILFIELD

作　　者：戴俊生[1] 冀国盛[1] 马欣本[2] 王志云[2] 刘家军[2] 杨祥峰 王艳红[2] 

机构地区：[1]石油大学资源与信息学院,山东东营257061 [2]江苏石油勘探局试采二厂,江苏金湖211623

出　　处：《大地构造与成矿学》2002年第2期126-130,共5页Geotectonica et Metallogenia

基　　金：国家重点基础研究发展规划(973)资助项目(批准号:G1999075507).

摘　　要：闵桥油田位于苏北盆地内东台坳陷西部金湖凹陷的东南部,阜宁组中发现火山岩油藏。本文通过地质和地球物理资料分析,认为闵桥地区的基本构造特征是断裂构造发育,阜宁组表现为背斜构造形态,地堑是断层的基本剖面组合形式,帚状构造是断层的基本平面组合形式,阜宁组和三垛组是断层的两个集中发育层段,断块掀斜旋转明显,断鼻圈闭发育在断层的上升盘,阜宁组断层具有封闭性。闵桥地区新生代期间的构造演化可划分为四个阶段,即阜宁期断块形成阶段,戴南期断层休眠阶段,三垛期断层再次活动阶段,晚第三纪和第四纪构造稳定阶段。闵桥地区新生代构造活动强弱交替,断层活动差异明显,地堑式断层反映出构造迁移,新生代由西降东升变为东降西升,火山岩构造圈闭定型于阜宁期末。The Minqiao oilfield is located in th e southeast of the Jinhu sag,west of Dongtai depression in the Subei basin.Volcanic rock oil re servoir has been found in the Funing F ormation.Based on analysis of information of geology and geophysics,the basic structural characteristics of Minqiao area is recognized a s growth of fractures in this paper.The Funing Formation appears an anticline.Graben is the basic assemblage of faults in profile.Brush structur e is the basic assemblage of faults in plane.Faults concentrate in the Funing Formation and Sanduo Formati on.Tilt rotation of the blocks is obvious.Traps of fault nose lie in the uplifted side of faults and the fault s in the Funing Formation have seal ab ility.Tectonic evolution of the Minqiao area in Cenozoic era can be di vided into four periods.The fault bl ocks were formed in Funing period.The faults were dormant during Dainan period.The faults activated again in Sanduo period and was stable in the late Tertiary and Quate rnary.In Minqiao area,tectonic activity appears strong and weak al-ternation in the Cenozoic.The diffe rentiation of fault activity is obvious.Graben faults show tectonic mi-gration.It changes from down in west and up in east to down in east and up in w est in the Cenozoic.The structural traps of volcanic rock fi xed their form in the end of Funing period.

关 键 词：闵桥油田 阜宁组 构造特征 构造演化 

分 类 号：P618.3[天文地球—矿床学] P542[天文地球—地质学]