Stratigraphic division and correlation of the Upper Jurassic-Pliocene in the Dunhua basin
Stratigraphic division and correlation of the Upper Jurassic-Pliocene in the Dunhua basin
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发表时间：
2008
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通讯作者：
Xiewen Xiao
中科院分区：
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作者：
Xiewen Xiao
利用野外资料、地震资料、煤田钻探资料和古生物资料，对松辽盆地周缘敦化盆地—煤田远景区具有代表性的地层划分方案进行了编制和分析，得出以下认识：(1)惠春组的时代为始新世—渐新世；(2)盆地内可能不存在上白垩统龙井组；(3)所谓毛尔山组上段和下段应划分为泉水村组和长财组；(4)盆地内确实存在大砬子组、泉水村组、长蔡组和屯田营组，根据敦化盆地与周边盆地的岩石地层和生物地层对比，大砬子组和长蔡组可能分别属于早白垩世阿普梯-阿普梯和贝里亚-阿普梯；(5)修正了盆地若干地点局部地层名称的错误用法；(6)在敦化盆地建立了地层层序，具有一定的参考价值。
The authors used the field data, seismic data, coal field drilling data and paleontological data to compile and analyze the representative stratigraphic division schemes for the Dunhua basin-coal prospect area at peripheries of the Songliao basin, and got the following understandings: (1) the age of the Huichun Formation is Eocene-Oligocene;(2) the Upper Cretaceous Longjing Formation may not exist in the basin; (3) the upper member and lower member of the so-called Mao'ershan Formation should be assigned to the Quanshuicun Formation and Changcai Formation;(4) the Dalazi, Quanshuicun, Changcai and Tuntianying formations do exist in the basin, of which the Dalazi Formation and Changcai Formation might be Early Cretaceous Aptian-Albian and Berriasian-Aptian in age respectively according to the lithostratigraphic and biostratigraphic correlation between the Dunhua basin and its neighboring basins;(5) the wrong uses of some local formation names at several sites of the basin are revised; and (6) a stratigraphic sequence is established in the Dunhua basin, which may be used for reference at present.