THE SEQUENCE OF FAR-SHORE TURBIDITE FAN SYSTEMS ON GENTLE SLOPE AND ITS PETROLEUM-BEARING FEATURE IN CENTRAL DEPRESSION BELT OF DONGYING
Sui Feng-gui, Luo Jia-qiang
Abstract
Sui Feng-gui, Luo Jia-qiang
Abstract
Different views of the source area and origin1 types of turbidite sand-bodies in the Third Member of Shahejie Fm.(Es_3) in the central Dongying Depression have existed for many years. The authors think that the eastern and southern source area were contributing together in the sedimentary period of Es_3 after synthetically geological research in the great scope. The southern source area central depression belt and formed 5 sets of sequence of far-shore turbidite fan system on gentle slope.The eastern source area only affected partial region of Dongying delta and formed some small delta-slumping turbidite sandbodies.It was pointed out that the lower part of Es_3 has the probability for find large-scale lithological reservoir.Geological research realed that the sedimentary framework of the southern and eastern provenaces plays important role in the sedimentation of Es_3.
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Different views of the source area and origin1 types of turbidite sand-bodies in the Third Member of Shahejie Fm.(Es_3) in the central Dongying Depression have existed for many years. The authors think that the eastern and southern source area were contributing together in the sedimentary period of Es_3 after synthetically geological research in the great scope. The southern source area central depression belt and formed 5 sets of sequence of far-shore turbidite fan system on gentle slope.The eastern source area only affected partial region of Dongying delta and formed some small delta-slumping turbidite sandbodies.It was pointed out that the lower part of Es_3 has the probability for find large-scale lithological reservoir.Geological research realed that the sedimentary framework of the southern and eastern provenaces plays important role in the sedimentation of Es_3.
Key concepts: Geology, Turbidite, Sedimentary rock, Slumping, Delta, Geomorphology, Shore, Source rock