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e er duo si pen di zhong yang gu long qi yu tian ran qi ju ji
Author(s): 
Pages: 64-71
Year: Issue:  1
Journal: Oil & Gas Geology

Keyword:  鄂尔多斯盆地中央古隆起构造发展史天然气远景评价奥陶系;
Abstract: The central uplift of Ordos Basin is located in Wuqi-Qingyang-Fuxian region andcould be divided into steep slope area in the west flank,eroded area in central uplift,gen-tle slope area in the east flank,gentle slope in the north flank and steep-gentle changingarea in the south flank.The uplift underwent Pre-Caledonian,Caledonian,Hercynian,Yenshan and etc.evolution periods.The uplift is close to two gas generation centers of Or-dovician,Permo-Carboniferous Systems,which provide rich gas-sources for the east flankslope area,thus the uplift is favourable in seeking for weathered-crust and other subtletraps.The bauxite of Middle Carboniferous Benxi Formation can be direct seal,and Per-mian argillaceous rocks may act as regional seals.Hence Jingbian-Zhidan-Fuxian area inthe east flank of the uplift is most favorable for gas exploration,then Dingbian-Tianchi,the west steep slope is the reserve area.
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