Structural and kinematic analysis of Cenozoic rift basins in South China Sea: A synthesis

Wang, Pengcheng; Li, Sanzhong; Suo, Yanhui; Guo, Lingli; Santosh, M.; Li, Xiyao; Wang, Guangzeng; Jiang, Zhaoxia; Liu, Bo; Zhou, Jie; Jiang, Songyan; Liu, Ze

doi:10.1016/j.earscirev.2021.103522

Cited by 50 publications

(29 citation statements)

References 94 publications

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“…Volatile components released by HTVCs have played a signi cant role in driving global climate warming, such as in the cases of the early Jurassic warming 8 , and the well-known PETM 7 . While the intrusion of magma, and associated HTVCs, are regarded as primary mechanisms driving global warming events during continental rifting [7][8] , this mechanism has never been recognized as responsible for the the LOW event, despite the fact that magma-rich continental rifting has occurred during the late Oligocene -early Miocene throughout the globe [20][21][22][23] .…”

Section: Magmatic Intrusions and Associated Extrusion Edi Ces Often G...mentioning

confidence: 99%

Cenozoic igneous activity in Northern China as a mechanism for late Oligocene climate warming

Tao

Alves

et al. 2022

Preprint

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Continental rifting is often associated with important magmatism, which significantly influences the Earth’s climate. In this study, we use comprehensive of 3D seismic and borehole datasets from Northern China to document magma intrusion and associated hydrothermal vent complexes (HTVCs) during the Cenozoic. The aim is to understand their impact on late Oligocene - early Miocene climate. Both Mesozoic and Cenozoic magma intrusions occurred in the Bohai Bay Basin, Northern China, while Cenozoic magmatism in the Bohai Bay Basin occurred during late-Oligocene to early-Miocene, when the final stage of rifting occurred in the region. Methane produced by Cenozoic magma in the Boxing Sag alone is estimated to be 27.2-820 Gt, which accounts for approximately 3-5% of the total methane produced in Northern China (1760-21100 Gt). Our study suggests that warm climate during late Oligocene was potentially subjected to intensive rifting related sill emplacements in basins such as the Bohai Bay Basin. Giving the extensively developed Cenozoic magmatic intrusions in the Bohai Bay Basin, our results suggest that, similarly to the Paleocene-Eocene thermal maximum (PETM), igneous activity during late-Oligocene might played a significant role in driving the Late Oligocene Warming event.

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Section: Magmatic Intrusions and Associated Extrusion Edi Ces Often G...mentioning

confidence: 99%

Cenozoic igneous activity in Northern China as a mechanism for late Oligocene climate warming

Tao

Alves

et al. 2022

Preprint

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“…The northern margin of the South China Sea is located in the core of the Pacific Subduction Domain and the Tethyan Collision Domain (Wang et al, 2021). The Qiongdongnan Basin, located in the west of the northern continental shelf of the South China Sea (Zhang et al, 2021), covering an area of about 6.3 Â 10 4 km 2 , has a large potential for petroleum exploration.…”

Section: Geological Settingmentioning

confidence: 99%

“…Tectonic evolution of the Qiongdongnan Basin consists of three phases: intense rifting (Late Oligocene to Palaeocene), post-rifting slow subsidence (Early to Late Miocene), and very rapid subsidence (Late Miocene to Present-day; Hu et al, 2013). The basin has experienced multi-stage tectonic movements, namely, Shenhu, Zhujiang, Nanhai, Baiyun, and Dongsha (Wang et al, 2021). The Yanan Sag is located in the shallow water zone of the western basin and adjacent to the Yinggehai Basin (Figure 1c), with high temperature and high pressure (Zhu et al, 2009).…”

Section: Geological Settingmentioning

confidence: 99%

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Hydrocarbon gas leakage from high‐pressure system in the Yanan Sag, Qiongdongnan Basin, South China Sea

Chen

Yang

et al. 2021

Geological Journal

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Despite high pressure being ubiquitous in the Yanan Sag of the Qiongdongnan Basin, South China Sea, its potential effect on gas migration-accumulation remains unclear.In this study, a series of geochemical indicators combined with the origin of high pressure were used to elucidate the cause of gas accumulation failure in the overpressured YC19-1 structure. Drill-stem tests, mud weights, and well-loggings reveal two vertical overpressure systems. Pore pressure in the deep Lingshui and Yacheng formations almost reaches a lithostatic magnitude, which was interpreted as a result of gas generation and disequilibrium compaction triggered by the Pliocene-Quaternary rapid subsidence. A thermal anomaly above the high-pressure system was evidenced by high homogenization temperature (Th) of fluid inclusion, abnormally high vitrinite reflectance, and a rapid transformation from kaolinite to illite. The high thermal field likely resulted from a cross-stratal fluid migration from the deep high-pressure system. Both methane-bearing inclusions in sandstones and abnormal Rock-Eval data of mudstones above the high-pressure surface suggest an influx of external hydrocarbons. Based on primary aqueous inclusion Th and salinity, carbon and oxygen isotope compositions, and petrographic observations, widespread silica and carbonate cements near the overpressure surface were interpreted to be derived from extraformational materials carried by deep-seated basinal fluids. Fluid inclusion Th coupled with burial model suggests that the gas leakage took place at circa 1.6 Ma, coinciding well with the stages of both gas generation and overpressure.These observations suggest an upward leakage of gas-bearing fluids induced by pressure release, thus leading to the existence of only non-commercial gas-bearing aquifers in the overpressured YC19-1 structure.

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“…Wang, Wang, and Jiang (2017) reported the back-arc extensional environment of the Late Permian within the Indochina Plate, Ji et al (2018) considers that the tectonic environment was a persistent extensional regime (Li, 2000;Li et al, 2010;Zhou et al, 2006). The second interpretation regards the tectonic environment as a compressional regime alternating with strike-slip and extensional movements (Cui et al, 2013;, Li, Qiu et al, 2014Wang et al, 2017;Wang et al, 2021;Xu et al, 2011Xu et al, , 2014 corresponding to changes in the Palaeo-Pacific Plate during the Late Mesozoic and possibly including the following events:…”

Section: The Mode Of Extensionmentioning

confidence: 99%

Cretaceous growth strata in terrigenous basins in the East Yangtze Block: A response to Early Cretaceous extension in Southeast China

Peng

et al. 2021

Geological Journal

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Cretaceous syntectonic growth strata in terrigenous basins in Southeast China have scarcely been reported in previous studies. This work focusses on the growth strata of the Early Cretaceous red beds in the East Yangtze Block (EYB), especially in the Huangshan Basin in southern Anhui Province, to help determine the Late Mesozoic tectonic domain and the precise timing of the initiation of extensional tectonics in Southeast China. Field observations show that the dip angles of the red conglomerate-bearing sandstones from the lower part of the Huizhou Fm. vary from 49 to gentle dips towards the basin centre and that the visible and estimated thickness within a single bed increases slightly downward from the upper to the lower part. These characteristics indicate that the sedimentary area of the Early Cretaceous Huizhou Formation (Fm.) has undergone an extensional process with the expansion and deepening of the sedimentary basin by rotation of the border surface (limb) and thus deposited the extension growth strata simultaneously with (or closely after) the 139 Ma Shiling volcanic activity. Caused by a NW-SE-oriented extensional stress field since ca. 140 Ma, a model in which NE-SW-oriented tectonic lines transform to E-W-trending tectono-magmatic belts by intersecting and inheriting the previous E-W-trending tectonic fabrics is established in the present work. Consequently, these phenomena are influenced by Palaeo-Pacific Plate rollback and the inheritance of astructural framework from the regional basement strata and deformation series.

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Structural and kinematic analysis of Cenozoic rift basins in South China Sea: A synthesis

Cited by 50 publications

References 94 publications

Cenozoic igneous activity in Northern China as a mechanism for late Oligocene climate warming

Cenozoic igneous activity in Northern China as a mechanism for late Oligocene climate warming

Hydrocarbon gas leakage from high‐pressure system in the Yanan Sag, Qiongdongnan Basin, South China Sea

Cretaceous growth strata in terrigenous basins in the East Yangtze Block: A response to Early Cretaceous extension in Southeast China

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