Contrasting fluvial styles across the mid-Pleistocene climate transition in the northern shelf of the South China Sea: Evidence from 3D seismic data

Zhuo, Haiteng; Wang, Yingmin; Hu, Shi; He, Manchao; Chen, Weitao; Li, Hua; Wang, Ying; Yan, Weibo

doi:10.1016/j.quascirev.2015.10.012

Cited by 42 publications

(15 citation statements)

References 57 publications

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“…Recently, the development of 3D seismic technologies has allowed accurate documentation of planview morphology of sedimentary systems in the subsurface (Davies, et al, 2007, Ethridge and Schumm, 2007, Miall, 2002, Zhuo et al, 2015. The bar elongation versus river slope relationship found here may take advantage of such development and provide a useful approach for inverting the slope of fossil rivers in the subsurface.…”

Section: Example Applicationmentioning

confidence: 84%

Empirical relationship between river slope and the elongation of bars in braided rivers: A potential tool for paleoslope analysis from subsurface data

Castelltort

2018

Marine and Petroleum Geology

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A B S T R A C TPaleoslope of ancient river systems is a fundamental parameter needed to reconstruct paleohydrology and paleoclimate from the fluvial sedimentary record. The shape of braid bars in 22 modern rivers yields a relationship between average bar elongation (length/width) and river slope. Steep rivers display more elongated bars than gently dipping reaches. This relationship has potential application to ancient braided systems preserved in the subsurface and imaged by 3D seismic data. The average elongation of bars identified on a stratal-slice through the DaGang river deposits in North-East China yields a slope prediction which, combined with empirical data on grain size and slope of alluvial rivers, predicts a median grain size of between 0.1 and 1 mm for the considered river sediment, in agreement with grain size data in an adjacent isochronous belt. This study provides an additional approach for paleohydraulics in sedimentary basins and grain size prediction in exploration.

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Section: Example Applicationmentioning

confidence: 84%

Empirical relationship between river slope and the elongation of bars in braided rivers: A potential tool for paleoslope analysis from subsurface data

Castelltort

2018

Marine and Petroleum Geology

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“…5e ). Meanwhile, increased fluctuations in sea-level after ~880 ka tend to have promoted the instability of the river system, which caused frequent aggradation and incision in the interglacial-glacial cycles 57 . Thus, large amounts of materials eroded in the catchment area in the glacials could be transported much lower reaches of the river system under high precipitation-induced discharge period.…”

Section: Discussionmentioning

confidence: 99%

Persistent effects of the Yellow River on the Chinese marginal seas began at least ~880 ka ago

Yao

Shi

Qiao

et al. 2017

Sci Rep

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The Yellow River (or Huanghe and also known as China’s Sorrow in ancient times), with the highest sediment load in the world, provides a key link between continental erosion and sediment accumulation in the western Pacific Ocean. However, the exact age of its influence on the marginal sea is highly controversial and uncertain. Here we present high-resolution records of clay minerals and lanthanum to samarium (La/Sm) ratio spanning the past ~1 million years (Myr) from the Bohai and Yellow Seas, the potential sedimentary sinks of the Yellow River. Our results show a climate-driven provenance shift from small, proximal mountain rivers-dominance to the Yellow River-dominance at ~880 ka, a time period consistent with the Mid-Pleistocene orbital shift from 41-kyr to 100-kyr cyclicity. We compare the age of this provenance shift with the available age data for Yellow River headwater integration into the marginal seas and suggest that the persistent influence of the Yellow River on the Chinese marginal seas must have occurred at least ~880 ka ago. To our knowledge, this study provides the first offshore evidence on the drainage history of the Yellow River within an accurate chronology framework.

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“…However, a small number of cases (e.g. Posamentier, 2001;Zhuo et al, 2015;Aquino da Silva et al, 2016), where ambiguity as to the classification of the described successions remains, have been included in the database. Incised-valley geometries vary along dip (Strong & Paola, 2008;Martin et al, 2011;Phillips, 2011).…”

Section: Incised-valley-fill Dimensionsmentioning

confidence: 99%

Geological controls on the geometry of incised‐valley fills: Insights from a global dataset of late‐Quaternary examples

Colombera

Mountney

2019

Sedimentology

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Incised valleys that develop due to relative sea‐level change are common features of continental shelves and coastal plains. Assessment of the factors that control the geometry of incised‐valley fills has hitherto largely relied on conceptual, experimental or numerical models, else has been grounded on case studies of individual depositional systems. Here, a database‐driven statistical analysis of 151 late‐Quaternary incised‐valley fills has been performed, the aim being to investigate the geological controls on their geometry. Results of this analysis have been interpreted with consideration of the role of different processes in determining the geometry of incised‐valley fills through their effect on the degree and rate of river incision, and on river size and mobility. The studied incised‐valley fills developed along active margins are thicker and wider, on average, than those along passive margins, suggesting that tectonic setting exerts a control on the geometry of incised‐valley fills, probably through effects on relative sea‐level change and river behaviour, and in relation to distinct characteristics of basin physiography, water discharge and modes of sediment delivery. Valley‐fill geometry is positively correlated with the associated drainage‐basin size, confirming the dominant role of water discharge. Climate is also inferred to exert a potential control on valley‐fill dimensions, possibly through modulations of temperature, peak precipitation, vegetation and permafrost, which would in turn affect water discharge, rates of sediment supply and valley‐margin stability. Shelves with slope breaks that are currently deeper than 120 m contain incised‐valley fills that are thicker and wider, on average, than those hosted on shelves with breaks shallower than 120 m. No correlation exists between valley‐fill thickness and present‐day coastal‐prism convexity, which is measured as the difference in gradient between lower coastal plains and inner shelves. These findings challenge some concepts embedded in sequence stratigraphic thinking, and have significant implications for analysis and improved understanding of ‘source to sink’ sediment route‐ways, and for attempting predictions of the occurrence and characteristics of hydrocarbon reservoirs.

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Contrasting fluvial styles across the mid-Pleistocene climate transition in the northern shelf of the South China Sea: Evidence from 3D seismic data

Cited by 42 publications

References 57 publications

Empirical relationship between river slope and the elongation of bars in braided rivers: A potential tool for paleoslope analysis from subsurface data

Empirical relationship between river slope and the elongation of bars in braided rivers: A potential tool for paleoslope analysis from subsurface data

Persistent effects of the Yellow River on the Chinese marginal seas began at least ~880 ka ago

Geological controls on the geometry of incised‐valley fills: Insights from a global dataset of late‐Quaternary examples

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