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Structural Characteristics and Evolution of North Ordos Basin in Late Mesozoic and Cenozoic
Author(s): 
Pages: 31-36
Year: Issue:  3
Journal: JOURNAL OF EARTH SCIENCES AND ENVIRONMENT

Keyword:  鄂尔多斯盆地北部中、新生代构造特征演化;
Abstract: 根据地震、地质等资料,结合野外地质及前人研究成果,对鄂尔多斯盆地北部中生代晚期以来后期改造特征进行了研究.结果表明,盆地周缘和内部在中新生代都受到后期改造作用,周缘存在挤压逆冲推覆和拉张断陷等不同性质的构造改造作用.在盆地北部,盖层中的构造受到了基底断裂的控制,正断层、逆断层和由基底断裂控制的挠曲构造等有规律发育,根据构造的发育特点将盆地北部分为东胜、三眼井、准格尔旗、鄂托克旗、乌审旗-榆林和定边-绥德构造区.自侏罗纪以来,盆地经历了萎缩消亡和周缘逆冲构造带的形成、挤压隆升剥蚀和拉张隆升剥蚀3大构造演化阶段,现今构造是中新生代多期构造作用的结果.
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