三江盆地绥滨坳陷“滴道组”与东荣组地层及沉积相研究  

Study on Stratum and Sedimentary Facies of "Didao Formation " and Dongrong Formation in Suibin Depression of Sanjiang Basin

作　　者：陈秀艳[1] 刘招君[1] 陈永成[1] 何玉平[1] 王伟涛[1] 王世辉[2] 杨建国[2] 

机构地区：[1]吉林大学地球科学学院,长春130061 [2]大庆油田勘探开发研究院,黑龙江大庆163472

出　　处：《沉积学报》2007年第5期678-683,共6页Acta Sedimentologica Sinica

基　　金：大庆探区外围中;新生代断陷盆地群演化与油气远景;国家专项(XQ-2004-07-03)基金项目资助

摘　　要：通过绥滨坳陷"滴道组"与东荣组岩性特征、地震反射特征和层序发育特征的对比分析,发现在岩性方面这两套地层下部均含有砂砾岩、砾岩,中部以细砂岩、粉砂岩为主,上部沉积岩中均有火山岩夹层,不同的是"滴道组"含煤,东荣组不含煤;地震剖面上东荣组振幅及连续性好于"滴道组";层序发育过程中均经历了两次海平面升降变化,在时间上具有可对比性。平面上,绥滨坳陷东北部为东荣组纯海相沉积,而西南部为"滴道组"(扇)三角洲沉积。因此,原"滴道组"应划归东荣组,认为"滴道组"为东荣组的异相沉积。据此进一步揭示其具有良好的生储盖组合。cludes coal bed, but Dongrong Formation does not. In seismic profile the amplitude and continuity of Dongrong Formation are better than ＂Didao Formation＂. Both ＂Didao＂ and Dongrong Formation experience twice sea level changes in sequence development process and they have pertinence. It is marine sediments of Dongrong Formation in northeast of Suibin depression and in the southwest ＂Didao Formation＂ is fan delta lake sediments. So the author considers that ＂Didao Formation＂ should be included in Dongrong Formation , and it is heteropical deposits of Dongrong Formation and hereby indicates that Didao and Dongrong Formation have well source rock-reservoir-cap combination.

关 键 词：绥滨坳陷 滴道组 东荣组 异相沉积 层序 

分 类 号：P512.2[天文地球—地质学]