Deep-shallow coupling response of the Cenozoic Bohai Bay Basin to plate interactions around the Eurasian Plate

Wang, Guangzeng; Li, Sanzhong; Suo, Yanhui; Zhang, Xiaoqing; Zhang, Zhen; Wang, Deying; Liu, Ze; Liu, Yongjiang; Zhou, Jie; Wang, Pengcheng; Guo, Lingli

doi:10.1016/j.gr.2020.09.002

Cited by 23 publications

(10 citation statements)

References 134 publications

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“…Combining this information with that of previous studies (Huang et al, 2015(Huang et al, , 2018(Huang et al, , 2020Qiu et al, 2018), we estimate the time at approximately 40 Ma. Along the Central Fault (F3), these synkinematic characteristics also occur in the Neogene strata (Figure 8a,b), indicating the continuous growth of strike-slip faults during the Neogene-Quaternary, which is consistent with some studies reporting that rightlateral motion was enhanced again after 12 Ma (Huang et al, 2015;Liu et al, 2017;Wang, Li, et al, 2020;Xu et al, 2018).…”

Section: The Timing Of Major Fault Activitysupporting

confidence: 89%

“…Additionally, during multiphase rifting, the direction of extension may vary between successive rift phases; therefore, pre‐existing faults may locally influence the stress field, resulting in a complex spatiotemporal fault evolution. This phenomenon has attracted the interest of many geologists because of its important influence on basin evolutionary processes (Huang & Liu, 2014; Morley et al, 2004; Wu et al, 2020), fault development (Cooper & Warren, 2010; Deng et al, 2017; Morley et al, 2004), sedimentary filling characteristics (Ge et al, 2020; Wang, Wu, et al, 2020), hydrocarbon distribution (Chen et al, 2022; Ren et al, 2019) and mineral resources (Huang et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…Some studies report that the initial time of strike‐slip motion occurred from the Palaeocene to the Early Eocene (Zhang, 2012; Zheng, 2011) or from the Middle to Late Eocene (Hsiao et al, 2004; Huang et al, 2012, 2015, 2018; Mao et al, 2019; Jia et al, 2021; Zhang et al, 2014), while others assert that the transition occurred at the end of the Eocene (Zhang, 2012) or in the Oligocene (Tong et al, 2008). While the mechanism of right‐lateral strike‐slip during the Cenozoic is still controversial, some studies argue that extension and right‐lateral motion are the results of the subduction of the Pacific Plate (Chen et al, 2022; Hsiao et al, 2004), while others state that right‐lateral strike‐slip motion is related to the collision of the Indian and Eurasian Plates (Chen et al, 2022; Wang, Li, et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

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Cenozoic evolution and deformation in the Eastern and Western Depression of the Liaohe Subbasin, Bohai Bay Basin: Insights from seismic data

et al. 2023

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In rift basins with multiphase extension, the reactivation of pre‐existing faults plays an important role in the evolution and partitioning of deformation. The Liaohe Subbasin is located in the northeastern Bohai Bay Basin, and the Tanlu Fault Zone (TLFZ) runs through it and experienced extension and right‐lateral strike‐slip during the Cenozoic. Therefore, it is an ideal region for studying the deformation and evolution of rift basins. Based on 3D seismic data, we document the structure and fault characteristics of the Eastern and Western Depressions of the Liaohe Subbasin, identify periods of activity on normal and strike‐slip faults, and analyse the evolution and mechanisms of the Cenozoic evolution of this subbasin. Our main results show that (1) the main faults in the Western Depression exhibited extensional motion throughout the Palaeocene, while the Eastern Depression exhibited significant right‐lateral motion during the Oligocene following the early extension stage. (2) The Cenozoic evolution of the Liaohe Subbasin can be divided into four stages: (i) an initial extension stage (the Palaeocene to the Eocene), (ii) an extension stage with initial strike‐slip (Early Oligocene), (iii) a right‐lateral strike‐slip stage (Late Oligocene) and (iv) a postrift stage (after the Neogene). (3) The upwelling of mantle material caused by the subduction and rollback of the Pacific Plate led to the extension of the Liaohe Subbasin from the Palaeocene to the Eocene. The TLFZ began right‐lateral motion at 40 Ma and experienced strong right‐lateral deformation when rifting was weak in the Oligocene and enhanced deformation after 12 Ma. (4) In this multiphase rifting process, under moderate obliquity, strike‐slip deformation is obvious in the areas close to pre‐existing faults, while extensional deformation is obvious in areas farther away. (5) Cenozoic extension and strike‐slip deformation due to partitioning of strain are caused by obliquely reactivation of TLFZ. This study suggests that the reactivation of pre‐existing strike‐slip faults plays a major role in evolution and strain partitioning. Moreover, the results will contribute to future hydrocarbon exploration in multiphase rift basins.

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Section: The Timing Of Major Fault Activitysupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Cenozoic evolution and deformation in the Eastern and Western Depression of the Liaohe Subbasin, Bohai Bay Basin: Insights from seismic data

et al. 2023

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“…The tectonic evolution of the BBB can be divided into the Paleogene syn‐rift stage and the Neogene‐Quaternary post‐rift stage (Allen et al., 1997; Ren et al., 2002). The syn‐rift stage can be further subdivided into several rifting episodes, such as the Paleocene‐Middle Eocene, the Late Eocene, and the Oligocene episodes, but detailed rifting processes might vary a lot among different depressions (Q. Y. Liu et al., 2018; Qiu et al., 2015; G. Z. Wang et al., 2020). Both the stretching center and depocenter of the basin migrated from the west to the east and from the south to the north (Q. Y. Liu et al., 2018; Zhao et al., 2016); peak strain rates occurred during the middle to late Eocene (Q. Y. Liu et al., 2018).…”

Section: Geological and Geophysical Settingmentioning

confidence: 99%

“…The detailed stratigraphic record is potentially valuable because it contains the spatial and temporal information about any anomalous subsidence events, including those unrelated to extensional processes. Since the subduction of the western Pacific plate plays an active role in mantle dynamics and Cenozoic deformation in eastern China (Allen et al., 1997; Suo et al., 2020; G. Z. Wang et al., 2020), dynamic topography generated by mantle convection has been thought to be a reasonable explanation for the anomalous subsidence (Xie et al., 2007; Yao et al., 2017). However, the role of sub‐lithospheric processes in generating anomalous subsidence remains ambiguous.…”

Section: Introductionmentioning

confidence: 99%

Anomalous Post‐Rift Subsidence in the Bohai Bay Basin, Eastern China: Contributions From Mantle Process and Fault Activity

Liu

et al. 2022

Tectonics

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The Bohai Bay Basin is the largest Cenozoic rift basin in eastern China, which exhibits a high rate of post‐rift subsidence deviating from the theoretical exponentially decay trend of thermal subsidence. The driving force for this phenomenon remains an outstanding question. Here we quantify the spatial and temporal distribution of the anomalous post‐rift subsidence by removing the thermal subsidence related to earlier stretching events from the observed tectonic subsidence. A multi‐episodic finite extension model is employed to estimate the stretching factors during rifting for nine profiles and 48 wells covering the basin. Our results show that the anomalous subsidence commenced at 12 Ma and the average anomalous subsidence rate accelerated from ∼19 m/Myr during the late Miocene to ∼75 m/Myr during the Quaternary, reaching ∼400 m at present. The anomalous subsidence is compared with published changes in dynamic topography arising from mantle flow. The temporal evolution of the dynamic topography generally fits the evolution of the anomalous subsidence, whereas variation in dynamic topography exhibits smaller amplitude and larger wavelength than our results. Small‐scale convection in the shallow mantle might play a role in generating short‐wavelength topography disturbances in the past tens of million years. Besides, the spatial distribution of the Quaternary anomalous subsidence generally coincides with fault movements in the past ∼2 Myr. We suggest mantle processes as well as fault activities might be possible mechanisms accounting for additional accommodation in the basin.

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Deformation characteristics and analog modeling of transtensional structures in the Dongying Sag, Bohai Bay Basin

Dong,

Zhao,

Zhang

et al. 2023

Front. Earth Sci.

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Deep-shallow coupling response of the Cenozoic Bohai Bay Basin to plate interactions around the Eurasian Plate

Cited by 23 publications

References 134 publications

Cenozoic evolution and deformation in the Eastern and Western Depression of the Liaohe Subbasin, Bohai Bay Basin: Insights from seismic data

Cenozoic evolution and deformation in the Eastern and Western Depression of the Liaohe Subbasin, Bohai Bay Basin: Insights from seismic data

Anomalous Post‐Rift Subsidence in the Bohai Bay Basin, Eastern China: Contributions From Mantle Process and Fault Activity

Deformation characteristics and analog modeling of transtensional structures in the Dongying Sag, Bohai Bay Basin

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