【摘要】 湖相碳酸盐岩分布于淡水湖盆和咸水湖盆地中,不同类型湖盆碳酸盐岩层序发育特征与构成样式明显存在差异。综合利用岩芯、录井、测井及地震等资料,对东营凹陷南坡中段地区进行了层序地层分析,发现湖相碳酸盐岩主要分布在湖侵体系域,研究区主要存在五种准层序类型:油页岩—白云岩型、油页岩—泥(晶)灰岩型、深水(泥)页岩—颗粒灰岩型、(泥)页岩—颗粒灰岩型、(泥)页岩—生物灰岩型准层序,通过对碳酸盐岩准层序的类型、识别标志、形成机理的研究,总结了各准层序在平面和垂向的分布特征,建立了适于咸水湖盆碳酸盐岩准层序对比模式。更多还原

【Abstract】 Lacustrine carbonate rocks can be found in freshwater basins and salt lakes basin.There were big differences in sequence features and patterns of different lake basins.We analyzed the sequence characteristic of the central region of southern slope of Dongying Depression using core,logging,logging and seismic data.Carbonate rocks were distributed in the shallow lake and semi-deep lake of the transgressive systems tract.Five types of parasequences can be found in the study area.They are oil shale-dolomite,oil shale-limemudstone(calcilutite),deep water(mudstone) shale-grain limestone,(mudstone) shale-grain limestone,(mudstone) shale-biogenic limestone.We summarized the spatial distribution characteristic of each parasequence by analyzing parasequence type,characteristics and formation mechanisms.A carbonate parasequence correlation model for the semi-saline lake basin has been proposed.更多还原