In addition to core, logging, and other previous research results, this paper determines the fault development and tectonic evolution process of the Baxian sag with the Paleogene rift stage based on 3D seismic data. The Paleogene tectonic evolution of the sag can be divided into three episodes and six evolution stages, and three types of faults are identified: intensely active normal, active normal, and weakly active normal. One first-order sequence, three second-order sequences, and fourteen third-order sequences of the Paleogene Baxian sag were created, and fifteen sequence boundaries were recognised. According to the rifting background and sedimentary facies development characteristics of each episode, five combination types of the depositional system associations were identified, including alluvial fan-fluvial and braided-delta-lacustrine in an early rifting episode, delta-lacustrine and nearshore subaqueous fan-lacustrine in the middle rifting episode, and fluvial-flood plain in the late rifting episode. Six response models of filling and the evolution process in Paleogene Baxian sag were concluded. The multi-episodes tectonic cycles of faulted lake basins resulted in complex paleogeomorphology and variable provenance supply, forming abundant sequence structure patterns and different filling and evolution processes of faulted lake basins. The stable rifting stage is favourable to form and preserve high-quality source rock, and develop various sedimentary facies and sandbody types, which is a potential area for exploration of a lithologic stratigraphic oil and gas reservoir.
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Research Article|
April 14, 2020
Filling process and filling characteristic analysis of Paleogene Baxian sag in Bohai Bay basin, China
Zili Zhang;
a
State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China.b
China University of Petroleum Beijing College of Geosciences 102249, China.Corresponding author: Zili Zhang (email: [email protected]).
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Xiaomin Zhu;
Xiaomin Zhu
a
State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China.b
China University of Petroleum Beijing College of Geosciences 102249, China.
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Ruifeng Zhang;
Ruifeng Zhang
c
Petro China Huabei Oilfield Company, Renqiu 062552, China.
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Sheng Fu;
Sheng Fu
a
State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China.b
China University of Petroleum Beijing College of Geosciences 102249, China.
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Jing Zhang
Jing Zhang
d
College of Earth Science Jilin University, Changchun, 130061, China.
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a
State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China.b
China University of Petroleum Beijing College of Geosciences 102249, China.
Xiaomin Zhu
a
State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China.b
China University of Petroleum Beijing College of Geosciences 102249, China.
Ruifeng Zhang
c
Petro China Huabei Oilfield Company, Renqiu 062552, China.
Sheng Fu
a
State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China.b
China University of Petroleum Beijing College of Geosciences 102249, China.
Jing Zhang
d
College of Earth Science Jilin University, Changchun, 130061, China.Corresponding author: Zili Zhang (email: [email protected]).
Publisher: Canadian Science Publishing
Received:
26 Aug 2019
Accepted:
01 Feb 2020
First Online:
17 Feb 2021
Online ISSN: 1480-3313
Print ISSN: 0008-4077
Published by NRC Research Press
Canadian Journal of Earth Sciences (2021) 58 (2): 188–208.
Article history
Received:
26 Aug 2019
Accepted:
01 Feb 2020
First Online:
17 Feb 2021
Citation
Zili Zhang, Xiaomin Zhu, Ruifeng Zhang, Sheng Fu, Jing Zhang; Filling process and filling characteristic analysis of Paleogene Baxian sag in Bohai Bay basin, China. Canadian Journal of Earth Sciences 2020;; 58 (2): 188–208. doi: https://doi.org/10.1139/cjes-2019-0158
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Index Terms/Descriptors
- alluvium
- Asia
- biozones
- Bohaiwan Basin
- Cenozoic
- China
- clastic sediments
- deltaic environment
- deposition
- depositional environment
- Far East
- faults
- floodplains
- fluvial environment
- fluvial features
- geophysical methods
- geophysical profiles
- geophysical surveys
- lacustrine environment
- normal faults
- paleoenvironment
- Paleogene
- petroleum
- petroleum exploration
- plate tectonics
- reflection
- reservoir properties
- rifting
- sediments
- seismic methods
- seismic profiles
- structural traps
- surveys
- Tertiary
- traps
- unconformities
- Baxian Sag
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