收稿日期: 2010-04-10
修回日期: 2010-06-22
网络出版日期: 2011-02-10
基金资助
国家科技重大专项“四川、塔里木、鄂尔多斯盆地海相碳酸盐岩储层形成机理与有利储层分布预测”(编号:2008ZX05004-002)资助.
Controlling Factor and Distribution of Paleo karst Development in Ordovician of Southern Ordos Basin
Received date: 2010-04-10
Revised date: 2010-06-22
Online published: 2011-02-10
姚泾利, 王兰萍, 张庆, 李泽敏, 张加林 . 鄂尔多斯盆地南部奥陶系古岩溶发育控制因素及展布[J]. 天然气地球科学, 2011 , 22(1) : 56 -65 . DOI: 10.11764/j.issn.1672-1926.2011.01.56
The Ordovician carbonate suffers from multi-stage and multi-type paleo\|karst in south of Ordos basin. The development of paleo-karst is controlled by ancient tectonic setting, lithologic association characteristics, and especially ancient geology and landform. On the basis of field mapping method, impression method, residual thickness method, and according to the result of seismic facies trace and seismic interpretation, the paper depicts ancient geology and ancient landform in detail in south of Ordos basin. From south to north, ancient landform is divided into karst highland, karst platform and eroded slope. The eroded slope is furthermore divided into the erosion shallow grooves, erosion pits, karst hills and karst beams. Due to the different paleo\|karst background and paleohydrologic conditions, the distribution of favorable areas is obviously different.
Key words： Ordos basin; Ordovician; Ancient karst; Palaeogeology; Ancient landform; Karst development.
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