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Study on the Sequence Stratigraphy and Depositional Systems of the Kapushaliang Group of Cretaceous in the Central Tabei Uplift
Author(s): LIU Yong-fu, ZHAO Jian-hua, FAN Qiu-hai, LIN Chang-song, YE Mao-lin, FAN Qian-qian, ZHANG Rong-xi, Research Institution of Petroleum Exploration and Development, Tarim Oilfield, PetroChina, School of Energy and Resources, China University of Geosciences, School of Ocean Sciences, China University of Geosciences, College of Computer Science and Technology, Beijing University of Technology
Pages: 1113-
1122
Year: 2014
Issue:
6
Journal: Acta Sedimentologica Sinica
Keyword: Tabei Uplift; Cretaceous; sequence stratigraphy framework; sedimentary systems; favorable zones;
Abstract: Based on the theory of sequence stratigraphy and analysis of seismic data,logging,cores and outcrop information,the sequence stratigraphy framework of Cretaceous in the central Tabei Uplift is established. The Kapushaliang Group as a second-order sequence,is divided into five third-order sequences. Each third-order sequence consists of lowstand system tract,transgression system tract and highstand system tract. Braided river,meandering delta and laucstrine facies are recognized within the sequence. The distribution of sedimentary systems are analysed with the tectonic evolution of the foreland basin. Halahatang area is located in back-bulge zone of the Kuqa depression foreland basin. The structural evolution of foreland basin of Kuqa depression in Cretaceous has its phases,which controls the characteristics of depositional palaeogeography development in the depression in different stages. The sand bodied of lowstand system tract and highstand system tract of SQ1,SQ2 and SQ5 are favorable explore targets and the meandering delta front in the middle of the study area are also favorable zones.
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