【摘要】 为了研究松辽盆地北部中浅层的区域成岩规律及其影响因素,将该区划分为9个成岩区,分别研究了各成岩区的成岩特征。应用流体包裹体均一温度、镜质组反射率、孢粉颜色指数、色谱—质谱分析、热解分析、有机酸测定、X衍射、普通薄片镜下鉴定、扫描电镜、电子探针、铸体薄片鉴定等资料分别划分了它们的成岩阶段。研究结果表明:松辽盆地北部中浅层的成岩作用具有"东强西弱,古强新弱"的成岩规律;盆地东部的抬升剥蚀幅度大,地温梯度高,成岩作用强;盆地西部的抬升剥蚀幅度小,地温梯度低,成岩作用弱;白垩系泉头组三、四段的地层时代相对较老,在埋深相同的情况下,成岩时间较长,成岩作用相对较强。更多还原

【Abstract】 The northern Songliao Basin was divided into 9 diagenetic districts in order to study the regional diagenetic regularities and the controlling factors of the middle-shallow horizons. The diagenetic characteristics were studied,and the diagenetic stages of the clastic rocks were divided in each diagenetic district using the data of homogenization temperatures of fluid inclusions, RO, TAI, GC-MS, Rock-Eval, organic acids, XRD, thin section observation, SEM, EPMA, blue epoxy resin-impregnated thin sections. As the results show, the diagenesis of clastic rocks in the eastern part of northern Songliao Basin are more extensive than in the western part of northern Songliao Basin at the same depth because the eroded strata in the eastern part are thicker in the western part,and the thermal gradients of the eastern part are higher than in the western part. Moreover, the diagenesis of the Member 3 and Member 4 of Quantou Formation are more extensive than those of the other strata in the middle-shallow horizons of the basin at the same depth because the Members 3 and 4 are older than the others,and their diagenetic time is longer than those of the others.更多还原