三江盆地绥滨坳陷区域地质探析  

Areal Geological Study in Suibin Depression of Sanjiang Basin

作　　者：胡志方[1] 孟召平[1] 

机构地区：[1]中国矿业大学资源与安全工程学院,北京100083

出　　处：《石油天然气学报》2007年第4期57-61,共5页Journal of Oil and Gas Technology

基　　金：国家重点基础研究发展计划(973计划)项目(2007CB209502和2007CB209405);全国优秀博士学位论文作者专项资金项目(200247);高等学校博士学科点专项科研基金项目(20050290009);教育部留学回国人员科研启动基金项目

摘　　要：绥滨坳陷位于三江盆地西部。构造特征显示,绥滨坳陷是一个长期演化发展的一级构造单元,其二级构造单元为中伏屯凸起、军川-南大林子凹陷和四方林子斜坡。其中军川-南大林子凹陷是一个较有利含油气远景的凹陷,而四方林子斜坡是油气运移的有利指向区。坳陷内主要发育23条断裂,主要发育压性和压扭性的逆冲断裂,北北西-北西向和北东向两组断裂构成了区块内基本的断裂体系,三组断裂活动具多期性和继承性。地层特征发现,三江盆地绥滨坳陷在前中生界基底之上发育9套充填地层,自下而上发育有中侏罗统绥滨组、上侏罗统东荣组、下白垩统城子河组、穆棱组、东山组、上白垩统猴石沟、海浪组、七星河组、雁窝组、下第三系渐新统宝泉岭组、上第三系中新统富锦组和第四系,各地层间以不整合或假整合面为界。地质演化史表明,绥滨坳陷从中侏罗世开始,经历了中生代的伸展作用和新生代的走滑拉分作用,形成了现今的构造格局。其构造演化经历了裂陷、断陷、挤压回返和走滑伸展等4个阶段。Suibin Depression was located in the west of Sanjiang Basin with obvious geologic tectonic characters.Suibin Depression,which had been long evoluted geologically,was a 1st order tectonic unit,its 2nd order tectonic units included Zhufutun Swell,Junchuan-Nandalinzi Depression and Sifanglinzi Slope,where Junchuan-Nandalinzi Depression was a beneficial depression for oil and gas exploration,while Sifanglinzi Slope was beneficial guiding area of oil and gas migration.Within the depression there developed 23 faults,mainly developed compressive and compressive-torsion reverse fault zones.The fundamental fault system in the block was composed of formations of NNW-NW and NE,their activities were multi-stages and inherited.Its characters indicate that on the basement of pre-Mesozoic 9 sets of filling strata are grown from bottom to top in Suibin Depression of Sanjiang Basin,which include Jurassic Suibin Formation,upper Jurassic Dongrong Formation,lower Cretaceous Chengzihe Formation,Muling Formation,Dongshan Formation,upper Cretaceous Houshigou Formation,Hailang Formation,Qixinghe Formation,Yanwo Formation,lower Tertiary Miocene Fujin Formation and Quaternary system,it is limited by uncomformity and quasi-conformity surfaces between strata.For geologic evolution history,in Suibin Depresison it starts from middle Jurassic,it experiences the Mesozoic extension and Cenozoic sliping-dividing and forms the present structural pattern.The tectonic evolution history experiences the chasmic stage,fault stage,compressive-return and sliping-extension stages.

关 键 词：三江盆地 绥滨坳陷 构造特征 地层评价 地质历史 油气运移 油气勘探 

分 类 号：P618.13[天文地球—矿床学]