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应用层序地层学和沉积学的原理与方法,综合岩心、钻井以及测井和地震资料,对塔西南地区白垩系进行了深入的研究,划分出2个二级层序和3个三级层序,建立了塔西南地区白垩系层序地层格架。在研究区识别出冲积扇、扇三角洲、有障壁滨岸和开阔台地4种沉积相。以层序格架内沉积相的展布特征,揭示了层序格架内沉积相的演化规律。
Based on the principles and methods of sequence stratigraphy and sedimentology, the Cretaceous in southwestern Tarim Basin has been studied comprehensively by integrating core, well drilling, well logging and seismic data, and two second-order sequences and three third-level intervals The Cretaceous sequence stratigraphic framework was established in southwestern Tarim Basin. In the study area, four kinds of sedimentary facies including alluvial fan, fan delta, barrier shore and open platform are identified. Based on the distribution characteristics of sedimentary facies in the sequence framework, the evolution of sedimentary facies in the sequence framework is revealed.