准噶尔盆地侏罗系辫状河三角洲沉积特征

doi:10.11743/ogg20080214

Abstract

Abstract:

Braided river delta is an important reservoir type in continental sedimentary basins and the potential exploration target for the future.Core,log,and geophysical data indicate that the braided river delta in the Jurassic Sangonghe Formation of Junggar basin was deposited in an environment with gentle slope and shallow water.As a result of continuous progradation from the north to the center of the basin,arenaceous-conglomeritic deposits in the delta showed typical progradational seismic reflectance signatures,large cross bedding,and non-continuous positive rhythm.Its characteristics of sedimentary subfacies and microfacies as well as the favorable areas for exploration of lithologic traps are also discussed in this paper.

Key words: Sedimentary characteristics, braided river delta, Jurassic, Junggar Basin

CLC Number:

TE121.3

Zhu Xiaomin, Zhang Yina, Yang Junsheng, Li Dejiang, Zhang Nianfu. Sedimentary characteristics of the shallow Jurassic braided river delta,the Junggar Basin[J]. Oil & Gas Geology, 2008, 29(2): 244-251.

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Sedimentary characteristics of the shallow Jurassic braided river delta,the Junggar Basin

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