DIVISION AND CORRELATION OF UPPER PERMIAN-LOWER TRIASSIC IN MIDDLE PART OF HENAN AND DISCUSSION ON SOME GEOLOGICAL TOPICS
-
摘要: 本区二叠系与三叠系的接触关系,以往一直认为是整合接触.作者通过露头和钻井剖面实际资料的综合分析和对比,认为该区的晚二叠系石千峰组与早三叠系方山组之间存在沉积间断,即石千峰组末期有一次上升运动(华力西末期运动),二叠系与三叠系是假整合接触.这次华力西末期运动,对煤系地层油气的生成、运移和聚集都有一定的影响.Abstract: The relationship between the sequences of Permian and Triassic is previously considered as conformable contact.The author of this paper suggests there is a depositional break between Shiqainfeng Formation of Upper Permian and Fangshan Formation of Lower Triassic,according to the analysis and correlation of observed informations from plenty of outcrop sections and well loggings.That is to say there is an uplift movement at the end of Shiqainfeng Formation (the end of Varisian movement).It is believed that the relationship between the sequences of Permian and Triassic is disconformable contact which would certainly influence the generation,migration and accumulation of oil/gas in the coal measure of this area.
-
[1] 王仁农,1981,河南永城及其相邻地区的“石千峰组”,地尾学杂志,5卷3期. [2] 欧阳舒等,1982,河南登封早三叠世孢粉组合,古生物学报,21卷6期. [3] 欧阳舒等,1985,豫皖地区平顶山砂岩段地质时代的探讨,石油实验地质,7卷2期. [4] 线永绵,1966,对冀南上二叠统石千峰组及三叠系的初步认识,地质论评,24卷3期. -
计量
- 文章访问数: 518
- HTML全文浏览量: 54
- PDF下载量: 299
- 被引次数: 0