Controls of contour currents on intra-canyon mixed sedimentary processes: Insights from the Pearl River Canyon, northern South China Sea

Wang, Xingxing; Zhuo, Haiteng; Wang, Yingmin; Mao, Peixiao; He, Manchao; Chen, Weitao; Zhou, Jiawei; Gao, Shengmei; Wang, Minghan

doi:10.1016/j.margeo.2018.09.016

Cited by 31 publications

(20 citation statements)

References 86 publications

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“…turbidity currents and mass wasting) after the Baiyun Slide scar was formed. As for the triggering factors increasing downslope sedimentary gravity flows, Wang et al (2018) proposed that the long-term erosion by contour currents associated with the South China Sea Branch of the Kuroshio Current caused the slope to become unstable and prone to collapse.…”

Section: The Role Of Slide Scars On the Initiation And Formation Of Submarine Channelsmentioning

confidence: 99%

The Baiyun Slide Complex, South China Sea: A modern example of slope instability controlling submarine-channel incision on continental slopes

Alves

Rebesco

et al. 2020

Marine and Petroleum Geology

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Section: The Role Of Slide Scars On the Initiation And Formation Of Submarine Channelsmentioning

confidence: 99%

The Baiyun Slide Complex, South China Sea: A modern example of slope instability controlling submarine-channel incision on continental slopes

Alves

Rebesco

et al. 2020

Marine and Petroleum Geology

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“…The sandwich-like (inflow-outflow-inflow) water mass exchange was initiated through the Luzon Strait (Chen et al, 2015;Yin et al, 2021). The present-day anticyclonic IW (Tian et al, 2006) and cyclonic DW (Qu et al, 2006) were consequently formed in the South China Sea (Figure 9C), generating contourite depositional systems along IW and DW pathways from the latest Miocene onwards (Figure 11) (Palamenghi et al, 2015;Chen et al, 2016;Wang et al, 2018;Chen et al, 2019;Chen et al, 2021;Liu et al, 2021;Yin et al, 2021).…”

Section: Paleoceanographic Implicationsmentioning

confidence: 99%

Carbonate contourite drifts in the southwest South China Sea: Sedimentary, paleoceanographic and economic implications

et al. 2022

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Contourite drifts are significant sedimentary features and provide clues for the reconstruction of paleoceanography and paleoenvironment. Although they have been increasingly identified in the world’s ocean, shallow-water contourite drifts (< 300 m depth) remain poorly understood and the examples are rare. This study documents a Middle Miocene shallow-water contourite depositional system in the southwest South China Sea by interpreting seismic reflection data and calibrating results with the previous chronological framework. The depositional system consisted of six mounded drifts and six moats. The contourite features were generated in seismic unit III (16-10.5 Ma) and distributed adjacent to carbonate reefs. They were formed on the proto-continental shelf (50-200 m depth) and shaped by the wind-driven currents. Changes in the sedimentary stacking patterns suggest three evolutionary stages of the contourite features. Stage I represents the growth of the Middle Miocene contourite depositional system between 16 and 10.5 Ma. Stage II marks the termination of carbonate drifts and the burial of the Late Miocene sedimentation during 10.5-5.3 Ma. Stage III started with the development of modern deep-water sedimentary systems since 5.3 Ma. The contourite features are compared with the examples on other South China Sea margins. Significant changes in the paleoceanography occurred at 10.5 Ma and 6.5-5.3 Ma when the dominated bottom currents shifted from the monsoonal wind-driven currents to the North Pacific waters, and then the modern circulation system. The Middle Miocene mounded drifts were likely sourced by the coarse-grained carbonate sands. Fluid flow escaped from the coarse-grained contourite layers and natural gas leakage occurs on the seafloor. Shallow-water carbonate contourite drifts can be served as a good gas reservoir and have great economic potential.

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“…It is in the Pearl River Mouth Basin, one of the most important petroliferous basins on the northern slope of the SCS. 27,62 In 2013, gas hydrate reservoirs were discovered at site W19 in the Shenhu area. 64 Field drilling and logging indicated that a 38-m-thick high-saturation NGH reservoir exists from 136.4 to 174.4 m below the seafloor (mbsf), with a water depth of 1273.6 m. 65 The lithology of the hydrate-bearing sediments is mainly silty clay and clay silt with a porosity of 0.5 and an absolute permeability of 10 mD.…”

Section: Target Reservoir Conditions Model Construction and Domain Discretizationmentioning

confidence: 99%

Numerical simulations of depressurization‐induced gas production from hydrate reservoirs at site GMGS3‐W19 with different free gas saturations in the northern South China Sea

Mao

Sun

et al. 2021

Energy Science & Engineering

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Controls of contour currents on intra-canyon mixed sedimentary processes: Insights from the Pearl River Canyon, northern South China Sea

Cited by 31 publications

References 86 publications

The Baiyun Slide Complex, South China Sea: A modern example of slope instability controlling submarine-channel incision on continental slopes

The Baiyun Slide Complex, South China Sea: A modern example of slope instability controlling submarine-channel incision on continental slopes

Carbonate contourite drifts in the southwest South China Sea: Sedimentary, paleoceanographic and economic implications

Numerical simulations of depressurization‐induced gas production from hydrate reservoirs at site GMGS3‐W19 with different free gas saturations in the northern South China Sea

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