RESEARCH OF SEDIMENTARY FACIES OF FORTH MEMBER OF YINGCHENG FORMATION IN XUJIAWEIZI FAULT DEPRESSION IN THE SONGLIAO BASIN
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摘要: 徐家围子断陷是一个构造格局呈西断东超、地层厚度西厚东薄的箕状断陷盆地,在沉积上具有多沉积中心、多物源和近物源的特征,北部安达地区火山是主要物源区。通过对研究区20多口井的岩心观察、以及测井、录井、地震和分析化验资料等的综合研究认为,徐家围子断陷营四段主要发育一套以粗砂岩—粗砾岩为主的河湖相粗碎屑沉积,主要发育7大岩相类型和5大沉积体系;其中,营四段下亚段在研究区北部主要发育扇三角洲沉积体系,南部则主要发育冲积扇和泛滥盆地;营四段上亚段,在宋西断层以东主要发育辫状三角洲体系,而以西主要发育扇三角洲沉积体系,南部则主要发育河流三角洲体系;在各沉积体系前缘则发育滨浅湖沉积。Abstract: The Xujiaweizi Fault Depression is a half graben-like fault basin that is fault in the west and transgression in the east in tectonic style,and that is thicker in the west and thinner in the east in formation thickness.There have the characteristic of multi-depocenter,many and near matter source.The volcano is the main matter source in Anda aera.By means of the research of rock core observation more than 20 wells,and well logging,seismic,test data and so on,there has chiefly a set of coarse fragment sedimentation of river and lacustrine facies from gritstone to cobblestone in K1yc4;there are 7 lithofacies types and 5 depositional systems.In it,there are fan delta sedimentary system in the north of research area in the lower member of K1yc4,there are alluvial fan and flood basin in the south.There are mainly braided delta sedimentary system in the east of Songxi Fault and fan delta sedimentary system in the west of Songxi Fault in the upper member of K1yc4;there are mainly delta sedimentary system in the south.But there are shore and mere sediment in the front of every depositional system.
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[1] 陈建文,梁杰.松辽盆地北部徐家围子断陷深层砾岩沉积相研究[R].大庆:大庆油田勘探开发研究院,2005. [2] 王平在.徐家围子断陷沉积体系及其演化规律[J].大庆石油学院学报,2001,25(2):21-26. [3] 王平在,辛仁臣.松辽盆地北部徐家围子断陷沉积体系及其演化规律[J].大庆石油学院学报,2001,25(3):41-45. [4] 任延广.松辽盆地徐家围子断陷地质特征与天然气聚集规律[D].长春:吉林大学,2004. [5] 殷进垠,刘和甫,迟海江.松辽盆地徐家围子断陷构造演化[J].石油学报,2002,23(2):37-40. [6] 李广伟.徐家围子断陷营城组四段地层沉积模式研究[D].大庆:大庆石油学院,2006. [7] SELLEY R C.Subsurface environmental analysis of North Sea sediments[J].AAPG Bulletin,1976,60(2):184-195. [8] 薛良清,GALLOWAY W E.扇三角洲、辫状三角洲体系的分类[J].地质学报,1991,65(2):141-151. [9] HOLMES A.Principles of physical geology[M].London:Thomas Nelson and Sons,Ltd.,1965:288. [10] MCGOWEN J H.Gum Hollow fan delta,Nueces Bay,Texas[R].Bureau of Economic Geology,The University of Texas at Austin,Report of investigation,1970:69-91. [11] GALLOWAY W E,HOBDAY D K.Terrigenous Clastic Depositional Systems[M].Heidelberg:Springer,1983:423. [12] MCPHERSON J G.Fan-delta and braided deltas:Varieties of coarse-grained deltas[J].Geol Soc Amer Bull,1987,99:331-340. -
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