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沙垒田凸起西部发育完整的受断裂陡坡带控制的源-汇系统.基于最新的钻井、薄片资料及高分辨率三维地震资料,精细刻画沙垒田凸起西部源-汇三要素(即物源体系、搬运体系及沉积体系),探讨要素间相关性并建立耦合模式.通过岩石学分析,物源区以混合花岗岩为主,结合古地貌恢复,划分4个三级汇水单元并定量拾取垂向高差与汇水面积参数,明确古沟谷与断槽物源通道的分布及尺度,应用地震沉积学精细刻画沙三段内部3个亚段扇三角洲沉积时空展布及演化.定量探讨源-汇各要素间的相关性,明确汇水单元面积与垂向高差是沉积扇体发育规模的主控因素,构建断裂陡坡带控制下的混合花岗岩-古沟谷或断槽与断面组合的物源通道-近源粗粒扇三角洲-浊积扇-湖泊体系耦合模式.
Shaleitian raised a well-developed source-sink system controlled by a fault steep slope in the west of China. Based on the latest drilling, sheet and high resolution 3D seismic data, Source system, transport system and sedimentary system), discussing the correlation between elements and establishing the coupling mode.According to the petrologic analysis, the source area is dominated by mixed granite, and in combination with the restoration of ancient topography, the four tertiary exchange units are divided and quantified The vertical height difference and catchment area parameters are picked up, and the distribution and scale of provenance channels in ancient valleys and fractures are defined. The sediment distribution and evolution of sedimentary facies in the three sub - Source-sink elements of the correlation between the clear catchment unit area and vertical height difference is the main factor controlling the development of sedimentary fan body, the construction of the fault steep slope control of mixed granite - paleo-valleys or fracture and the combination of sections Provenance Channel - Near Source Coarse Fan Delta - Turbidite Fan - Lake System Coupling.