The Geological-Geophysical Two-Dimensional Dissection of Basin Buried Volcanic Edifices —Taking the First Member of Yingcheng Formation in Yaoyingtai Region of Southern Songliao Basin as an Example

详细信息   

• 责任者：Yi Jian (College of Earth Sciences ; Jilin University ; Changchun 130061 ; China) ; Shan Xuanlong
• 刊名：Chinese Journal of Geophysics
• 出版年：2011
• 卷期：54(2)
• 关键词：火山机体 ; volcanic edifice ; 结晶岩类储集层 ; crystalline reservoirs ; 地震勘探 ; seismic exploration ; 地球物理测井 ; geophysical logging ; 松辽平原 ; Songliao Plain
• 页码：p.588-596
• 图表：3 illus., 1 table, 36 refs.
• 分类号：1600
• issnNo：ISSN0001-5733
• isbnNo：CN11-2074/P

摘要

In this paper, the authors take the cycles as the time-framework for the fine dividing of the volcanic edifices. First, the authors can divide the cycles using lithology and lithofacies in the well, the geological surfaces like weathering crust, sedimentary interbed and so on by logging method, and the continuous strong reflection on seismic sections of seismic events which can be traced in the whole region. Second, the authors can identify the volcanic edifices in the cycles by the differences of lithology and lithofacies in different wells, and the seismic phase characteristics of the volcanic edifices, and divide the boundary of the adjacent volcanic edifices by the unconformable intersection or angle contrary of the seismic events. Last, in the volcanic edifices, the authors can divide the stages via the facies sequence in wells, the weathering crust, baking border, chilled border, alteration zone identified by logging, and the basically continuous strong reflection of seismic events in the volcanic edifices.