Abstract：Through sequence-stratigraphic research,four sequences in third grade were identified in the Hetaoyuan Formation of Lower Tertiary in Sungang area,north slop of Biyang Depression,among which a eroded valley-topogenetic lowstand sedimentary system was recognized in the lowstand tracts of sequence Ⅱ and Ⅲ,The deposits in the eroded valley have specific feature in seismic reflection structure,sedimentary structure and depositional sequence.The paper presents the sedimentary mode of ramp fan delta plain-eroded valley-topogenetic lowstand fan sedimentary system.The eroded valley developed on the boundary of the continental fault lake basin has specific genetic features and its formation was controlled both by structural subsidente and lowering of lake surface.The research on eroded valley and topogenetic lowstand fan has outstanding significance on exploration of subtle reservoirs.There are 4 kinds of oil and gas reservoirs related with this sequence mode that were pointed out in the paper.
杨道庆, 邱荣华, 赵追, 姜在兴. 泌阳凹陷北坡下切谷—低位扇沉积体系及其油气勘探意义[J]. 石油地球物理勘探, 2002, 37(5): 485-490.
Yang Daoqing, Qiu Ronghua, Zhao Zhui, Jiang Zaixing. Eroded valley-topogenetic lowstand fan sendimentary system in north slop of Biyang depression and its significance in oil and gas exploration. OGP, 2002, 37(5): 485-490.
