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Developmental Characteristics of Turbidite and Its Implication on Petroleum Geology in Late-Triassic Ordos Basin
Author(s): 
Pages: 186-192
Year: Issue:  2
Journal: ACTA SEDIMENTOLOGICA SINICA

Keyword:  鄂尔多斯盆地晚三叠世浊积岩地质意义;
Abstract: 鄂尔多斯盆地晚三叠世延长组长6、长7期的深湖区域经过钻探发现多套厚薄不等的浊积岩砂体.通过岩心观察描述及岩石结构、构造特征分析研究,得出鄂尔多斯盆地延长组长6、长7期湖盆深湖区域发育的浊积岩属于三角洲前缘滑塌成因;其中西南物源方向的辫状河三角洲前缘的深湖部位主要发育较粗粒滑塌浊积岩;盆地东北物源方向的曲流河三角洲前缘的深湖部位主要发育较细粒滑塌浊积岩.弄清鄂尔多斯盆地晚三叠世湖盆中浊积岩特征及分布规律,不仅对大型陆相湖盆深湖区浊积岩的形成机理与发育特征研究具有重要意义,而且对深湖区浊积岩中油气的成藏机理研究也具有指导作用.
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