Coastal Depositional Responses to Relative Sea-Level Rise: Insights from a Superimposed Sandstone–Shale–Coal Reservoir in the Linxing Gas Field, China

The Ximing Sandstone-to-No. 9 Coal succession of the Taiyuan Formation in the Linxing gas field records a complex internal architecture of a transgressive succession developed in the western coast of the late Pennsylvanian North China epeiric sea. Facies and sequence stratigraphic analyses reveal it...

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Bibliographic Details
Published in:Energies (Basel) 2023-05, Vol.16 (10), p.4144
Main Authors: Liu, Jincheng, Zhang, Yan, Tan, Jingqiang
Format: Article
Language:English
Subjects:
Analysis
Canada
Coal
Coalbed methane
coastal evolution
Deposition
depositional processes
Estuaries
Evolution
Fluid mechanics
Gas fields
Gas industry
Gas production
Geomorphology
Grain size
Lagoons
Linxing gas field
Natural gas
Netherlands
Ocean currents
Oil and gas fields
Oil and gas production
Reservoirs
Saltation
Sandstone
Sea level
Sediments
Shale
Shale gas
Stone
Storm surges
Stratigraphy
superimposed gas reservoirs
symbiotic relationship
Taiyuan formation
Tidal prism
United Kingdom
Valleys
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Summary:The Ximing Sandstone-to-No. 9 Coal succession of the Taiyuan Formation in the Linxing gas field records a complex internal architecture of a transgressive succession developed in the western coast of the late Pennsylvanian North China epeiric sea. Facies and sequence stratigraphic analyses reveal its depositional evolution from fluvial channels through fluvial-dominated and tide-influenced inner estuaries to tide-dominated estuaries and finally to wave-dominated barrier lagoons. The evolution from fluvial- to tide-dominated deposition has been ascribed to the funnel-shaped valley coupled with an increased tidal prism induced by the upstepping and backstepping shoreline. The evolution from tide- to wave-dominated deposition has been ascribed to the wide North China epeiric seaway lacking local coastline irregularities after the incised-valley fill that provided sufficient fetch for the occurrence of large storm waves. Grain-size analysis reveals the relative importance of traction, saltation, dispersed suspension, and flocculated suspension in the development of the transgressive estuarine to lagoonal deposits. This study not only contributes to a proper understanding of coastal depositional response to the relative sea-level rise but also provides a context within which to interpret the symbiotic relationship of the superimposed sandstone–shale–coal reservoirs and predict the distribution of favorable unconventional gas production formation.
ISSN:1996-1073
1996-1073
DOI:10.3390/en16104144