The study of sequence stratigraphy characteristics and the bottom boundary of Guantao Formation in the middle area of Bohai Bay Basin
The study of sequence stratigraphy characteristics and the bottom boundary of Guantao Formation in the middle area of Bohai Bay Basin
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发表时间：
2010
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通讯作者：
C. Lt
中科院分区：
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作者：
C. Lt
通过对馆陶组层序地层学的研究，从岩性特征、电性特征、古生物、地震层序地层学和区域地质研究等方面入手，对馆陶组进行了更深层次的认识，识别出3种体系域，即低位体系域、高位体系域和水进体系域，利用基准面旋回技术，对馆陶组进行了3种基准面旋回的划分，并对馆陶组的层序地层学特征进行了分析通过对馆陶组和东营组上段的高分辨率等值线地质对比，确定D5 -1井2 782 ~ 2 917 m为东营组上段，D5-1井2 782 ~ 2 917 m为东营组上段，D5-1井2 782 ~ 2 917 m为东营组上段。该层段顶部为馆陶组底部。
By researching on the sequence stratigraphy based on the lithology characteristics,electrical characteristics,paleontology,seismic sequence stratigraphy and the study of areal geology,this paper is trying to obtain much deeper recognition of the Guantao Formation stratigraphy.Three kinds of tracts were recognized including LST,TST and HST.Based on basal level cycle technique,three kind of base-level cycles(SSC,MSC and LSC) were recognized in Guantao Formation.Guantao Formation was divided into two LSC and four MSC,and high resolution isochronous geologic correlation of Guantao Formation and upper Donying Formation.Interval from 2 782 m to 2 917 m of D5-1 well is upper Dongying Formation,and the top of this interval is the bottom of Guantao Formation.