重力流与等深流交互作用沉积是深海沉积的重要组成部分，其承载了古海洋、古气候及古构造等重要信息。目前地层记录中的重力流与等深流交互作用沉积研究远逊于现代沉积。在研究内容上还存在鉴别标志不完善、形成机理不清楚及主控因素不明确等问题。本项目以沉积学、海洋学及层序地层学理论为指导，采用野外地质工作与室内综合研究相结合、宏观与微观研究相结合、现代沉积与古代沉积研究相结合的方法，对鄂尔多斯盆地西南缘中奥陶统重力流与等深流交互作用沉积进行解剖，重点研究其沉积类型及特征，探讨其与相对海平面升降、构造运动强弱及气候变化等的联系，揭示其形成机理，分析其主控因素，建立其沉积模式，研究其砂体展布规律，促进地层记录中重力流与等深流交互作用沉积研究的发展，并为油气勘探提供理论依据。

Interaction between gravity flow and contour current deposits is an important part of the deep-sea deposits which carries significant information to analyze the paleoceanography, paleclimate and paletectonics. At present, the stratigraphic records of interaction between gravity flow and contour current deposits are much less focused on than that of modern. Furthermore, the identification marks are imperfect, mechanism and mainly controlling factors are still little clear. The modern sedimentological theory and the theory of oceanography, sequence stratigraphy are used as guidance, and by combining field geology with laboratory integrated study, macroscopic study with microscopic study, modern sedimentary study with ancient sedimentary study, the case study of interaction between gravity flow and contour current deposits of the Middle Ordovician in the southwest margin of the Ordos Basin is analyzed. And rock types and characteristics are mainly investigated. The relationship between the deposit and relatively sea level, tectonic activity and climate, forming mechanism, mainly controlling factors, sedimentary model and sandbody distribution are obverted, which aim to promoting development of research on the interaction between gravity flow and contour current deposits in the stratigraphic record and providing basis for deep-water oil and gas exploration.