滨北地区T_5和T_4不整合面剥蚀量恢复  

Erosion Restoration of T_5 and T_4 Unconformities in Binbei Area of Songliao Basin

作　　者：邱春光[1] 王璞珺[2] 刘延莉[1] 

机构地区：[1]中国地质大学(北京)能源学院,北京100083 [2]吉林大学地球科学学院,吉林长春130061

出　　处：《石油天然气学报》2006年第6期16-19,共4页Journal of Oil and Gas Technology

摘　　要：根据不同剥蚀量恢复方法的特点和松辽盆地滨北地区实际地质情况＋采用不同的方法对滨北地区T5和T4不整合面进行剥蚀量恢复。利用镜质体反射率法和体积平衡-沉积速率法相结合对T5不整合面进行剥蚀量恢复；应用镜质体反射率法、地层趋势分析法和沉积速率法相结合对T4不整合面进行剥蚀量恢复。砑究结果表明：T5不整合面固经历较长时间的剥蚀，剥蚀量较大，剥蚀量在700～2800m之间；T4不整合面剥蚀量多在200～1000m．在经历剥蚀时间较长的地区和靠近断陷盆地边缘的地区剥蚀量大。In combination with the characteristics of different erosion restoring methods and the geologic conditions of Binbei Area of Songliao Basin, different methods are deployed to conduct an erosion restoration of T_5 and T_4 unconformities in Binbei Area. The method of vitrinite reflectance is combined with the method of volume balance-sedimentation rate to have restoration to T_5 unconformaty, and the method of vitrinite reflectance is combined with stratum trend method and sedimentation rate method to have a restoration to T_4. The result shows that T_5 is of high erosion because of a long erosion period with erosion rate being between 700~2800m, the erosion in T_4 is at the most of 200~1000m.The erosion rate is the highest for longer erosion period and near the margin of the basin.

关 键 词：剥蚀量恢复 镜质体反射率法 体积平衡 滨北地区 

分 类 号：P512.2[天文地球—地质学]