Cenozoic Tectonic Characteristics, Evolution and Geodynamics of Dongpu Sag, Bohai Bay Basin, China

Chen, Shuping; Tan, Yuming; Qi, Jiafu; Wang, Deren; Mu, Xiaoshui; Li, Xueling

doi:10.5772/19585

Cited by 3 publications

(2 citation statements)

References 16 publications

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“…The fast northward movement of the Indian Plate relative to the Pacific Plate would have resulted in a NW–SE‐trending extensional stress field, triggering the Cenozoic rifting of the DPS. It would also have caused mantle flow eastward or southeastward, which might have also induced asthenosphere upwelling assisting the rifting process (Chen et al., ; Ren, Tamaki, Li, & Junxia, ). The Shahejie and Dongying Formations were deposited during the rifting stage, and samples were heated to temperatures of ~85 to 107°C until ~27 Ma (Figure ).…”

Section: Coupling Thermal History With Tectonic Evolutionmentioning

confidence: 99%

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Cenozoic thermal history reconstruction of the Dongpu Sag, Bohai Bay Basin: Insights from apatite fission‐track thermochronology

et al. 2019

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Knowledge of the thermal history of the onshore Dongpu Sag (DPS), Bohai Bay Basin is important for understanding its tectonic development within a broader regional context and for elucidating its poorly studied source‐rock maturation history. To unravel DPS time‐temperature development, apatite fission‐track data were acquired from eight sandstone samples in three deep wells. Thermal history modelling indicates continuous heating during the rifting stage (early Eocene to late Oligocene), followed by cooling attributed to tectonic uplift between ~27 and ~16 Ma, which resulted in the removal of ~1,400 to 1,800 m of section. Reheating occurred during the subsidence stage from middle Miocene until present. Unlike typical passive continental margin basins, the DPS experienced accelerated post‐rifting subsidence from ~5.8 Ma, which was especially marked since ~2.6 Ma. This phase was probably triggered by normal fault reactivation, in combination with a variation in the deep heat flow pattern.

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Section: Coupling Thermal History With Tectonic Evolutionmentioning

confidence: 99%

“…Following uplift and erosion, the thermal anomaly resulting from lithospheric stretching decays. The lithosphere reaches thermal equilibrium gradually and becomes cold and thick (Chen et al., ). The DPS evolved during a subsidence stage and samples were reheated due to post‐rifting sediment deposition.…”

Section: Coupling Thermal History With Tectonic Evolutionmentioning

confidence: 99%