Sedimentary features and formation mechanism of the turbidite of upper subsegment of Es_4,Wang 58 area,Niuzhuang Depression

Based on the stratigraphic classification of the fault trough lake basin bed succession,the sedimentary features and spatial distribution shape of the turbidite of upper sub-segment of Es4,Wang 58 area,Niuzhuang low-lying area in Dongying sag were researched by observing cores and analyzing sedimentary system and so on.The development feature and genesis mechanism of the turbidite were analyzed by lake level change combining with the structural evolution.The resut shows that the 3 sand group of upper subsegment of Es4,Wang 58 area,Niuzhuang low-lying area has developed a single break-far-beach turbidite fan.The matter source was the fan delta at the southeast of the low-lying area.The development and the distribution feature of the turbidite fan were controlled by lake level change,structural attitude and matter source.