Depositional System and Sequence Stratigraphy of Third Member of Shahejie Formation in Maxi Region,Raoyang Sag
Lufeng Zhan
Abstract
Lufeng Zhan
Abstract
With the data from core,geology,well-logging and seism,this paper studies the middle-upper sections of the third member of Paleogene Shahejie Formation in Ma'xi subsug,and the strata contrast frameworks of cyclic sequence is defined and established.the authors believe 4 types of sedimentary systems were developed in this area in upper-middle sections of the Paleogene Shahejie formation.They are delta,lacustrine,turbidity current and beach bar sedimentary systems.Subfacies and vertical evolution of the depositional systems are discussed in detail.
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With the data from core,geology,well-logging and seism,this paper studies the middle-upper sections of the third member of Paleogene Shahejie Formation in Ma'xi subsug,and the strata contrast frameworks of cyclic sequence is defined and established.the authors believe 4 types of sedimentary systems were developed in this area in upper-middle sections of the Paleogene Shahejie formation.They are delta,lacustrine,turbidity current and beach bar sedimentary systems.Subfacies and vertical evolution of the depositional systems are discussed in detail.
Key concepts: Geology, Sedimentary depositional environment, Paleogene, Sedimentary rock, Paleontology, Sequence stratigraphy, Sequence (biology), Delta