Overbank and channelfill deposits of the modern Yellow River delta

Gelder, A. Van; Berg, Jan H. van den; Cheng, Guodong; Xue, Chunji

doi:10.1016/0037-0738(94)90044-2

Cited by 91 publications

(48 citation statements)

References 5 publications

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“…The average sediment accumulation rate for 1976-1992 is about 1.2 m year À1 and the river mouth area has been an estuarine depocenter (Wang et al, 1992;Li et al, 1998b). As a consequence, the active river-mouth bar prograded with a rate of 1-4 km year À1 and the delta lobe extended with a rate of 20-25 km 2 year À1 (SPSTC, 1991;Van Gelder et al, 1994;Li et al, 1998b;Yang et al, 1999;Wang and Liang, 2000;Li et al, 2002;Yu, 2002). Although the active rivermouth bar is not large in size, it has a profound effect on the rapid growth of the Huanghe River delta (Li et al, 1998b).…”

Section: Introductionmentioning

confidence: 96%

“…The rapid deposition on the river-mouth bar causes its seaward progradation that has been an important control on the upstream siltation in the lower channel of the Huanghe River, serving as a stimulus to the river channel migration (Qian et al, 1993;Shi and Zhang, 2003;Shi, 2005). Heavy sedimentation in the lower reaches of the river channel causes the riverbed to aggrade at a rate of several centimeters per year (Qian et al, 1993;Van Gelder et al, 1994;Xu and Cheng, 2002). This aggradation increases the flood risk on the floodplain, making the river channel avulsionprone.…”

Section: Introductionmentioning

confidence: 97%

“…Since the 1980s, numerous studies have focused on the deltaic sedimentation, riverbed aggradation and river mouth bar formation on the delta-coast of the Huanghe River (Pang and Si, 1982;Wiseman et al, 1986;Wright et al, 1988Wright et al, , 1990Qian et al, 1993;Van Gelder et al, 1994;Ye, 1996;Li, 1997;Shi and Ye, 1997;Li et al, 1998b;Yin, 1999;Shi and Zhang, 2003). However, full understanding of the formation mechanisms of the river-mouth bar, in relation to the riverbed aggradation and channel migration, is lacking, and further understanding of hydrological and sedimen- 1897-1904; (4) 1904-1929; (5) 1929-1934; (6) 1934-1938 and 1947-1964; (7) 1964-1976; (8) 1976-present. tological processes that control delta-coast morphology is vital to coastal science and management, in relation to landuse planning, river channel maintenance, and hazard risk mitigation for sustainable regional development.…”

Section: Introductionmentioning

confidence: 99%

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River mouth bar formation, riverbed aggradation and channel migration in the modern Huanghe (Yellow) River delta, China

et al. 2006

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Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

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River mouth bar formation, riverbed aggradation and channel migration in the modern Huanghe (Yellow) River delta, China

et al. 2006

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“…The scarcity of sedimentary structures may have been the result of post-depositional events, such as bioturbation (Nadon, 1994;Bristow et al, 1999;Roberts, 2007), because such environments quickly become colonized by vegetation after deposition (Smith et al, 1989;Nadon, 1994). Splay deposits usually formed during periods of overbank flooding (Nadon, 1994;Makaske, 2001;Roberts, 2007) when the transport capacity of the flow was drastically reduced after leaving a channel causing most of the sediment load to be deposited on the floodplain (van Gelder et al, 1994). Such sheet deposits are commonly associated with ribbon sandstones of anastomosing river systems (Smith et al, 1989;Eberth and Miall, 1991;Kirschbaum and McCabe, 1992;Miall, 1996;Nadon, 1993;Makaske, 2001;Makaske et al, 2002;Roberts, 2007) and suggest that flooding events must have been characteristic features…”

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confidence: 99%

Facies architecture and palaeoenvironmental implications of the upper Cretaceous (Santonian) Csehbánya formation at the Iharkút vertebrate locality (Bakony Mountains, Northwestern Hungary)

Botfalvai

Haas

Bodor

et al. 2016

Palaeogeography, Palaeoclimatology, Palaeoecology

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The Csehbánya Formation (Santonian), exposed in the Iharkút open-pit, BakonyMountains, Hungary, is made up of a cyclic alternation of conglomerate, sandstone, and variegated siltstone and clay deposited in a fluviolacustrine environment. As a result of continuous excavation since 2002 it has yielded rich and diverse continental vertebrate and plant assemblages. A facies and architectural analysis of the Csehbánya Formation at this location identified four main lithofacies associations with eight subtypes consisting of (1) lenticular sandstones representing river channels, (2) conglomerates with sandstone (coarse grained likewise representing channel deposits), (3) heterolithic-channel fill (high density flash flow deposits) (4) splay sandstones produced by crevasse splays, (5) dark sandy siltstone (small-scale stagnant pool deposits with high organic content), (6) greenish-grey claystone (deposits of shallow lakes and ponds), (7) reddish (moderately drained) paleosols, (7) yellowish, mottled (hydromorphic) paleosols.The sedimentological investigations revealed that the terrestrial deposits exposed by the Iharkút open-pit were formed in an anastomosing fluvial system because: (i) the alluvial architecture is characterized by large proportion of overbank deposits encasing the channel sandstone bodies, (ii) the ribbon shaped sandstone bodies are dominant, (iii) cross-bedding and lateral accretion are almost completely absent in the channel fill deposits and (iv) the sandstone bodies are clearly isolated from each other, embedded in floodplain sediments, suggesting multiple co-existing channels.The most important vertebrate fossil site (SZ-6) was examined in special detail because it shows peculiar lithological features. The layers richest in fossils (Unit 1) of site is interpreted as a lag deposit formed during an episodic high density flash flood event representing a relatively short time interval, i.e., probably within a single rainy season. A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT 1 1. INTRODUCTIONA significant part of continental vertebrate fossils is found in alluvial deposits thus the reconstruction of the depositional history of alluvial sequences is the main goal of any sedimentological, paleontological and taphonomical examination of vertebrate sites (Behrensmeyer, 1982(Behrensmeyer, , 1988Retallack, 1984; Badgley, 1986a,b;Eberth and Miall, 1991;Nadon, 1993;Therrien, 2005;Roberts, 2007). One of the reasons for the accumulation of rich vertebrate fossil-bearing strata is that a relatively high number of animals are attracted to the floodplain due to abundant water and food supply (different plants or prey), which can result in a rich accumulation of bones (Behrensmeyer, 1988;Nadon, 1993;Andersson and Kaakinen, 2004). Furthermore, certain floodplain environments are favourable for bone preservation because of the relatively high depositional rate, post-mortem transportation, and reworking of animal remains by various fluvial processes (Behrensmeyer, 1988;Aslan and Behrensmeyer, 1996)....

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“…Ren and Shi, 1986;Wang et al, 1992Wang et al, , 2012Zeng, 1997;Saito et al, 2001;Hu and Cao, 2003). As a result, a large amount of sediment carried by the Yellow River has been deposited near the river mouth, forming a vast delta that has extended over 800 km during the Holocene from the Bohai Sea in the north to the Huanghai Sea in the south (Chinese Academy of Sciences, 1980;Hillel, 1991;Li and Finlayson, 1993;Van Gelder et al, 1994).…”

Section: Introductionmentioning

confidence: 99%

Progradation of the Yellow (Huanghe) River delta in response to the implementation of a basin-scale water regulation program

et al. 2015

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The water and sediment supply to the lower reach and estuary of the Yellow (Huanghe) River have been altered to a very significant degree by the construction of numerous small to large reservoirs and the progressive implementation of water and soil conservation measures across the entire drainage basin since the late 1950s, followed by a basin-scale water regulation program since 2002. There is an urgent need to know how progradation of the Yellow River delta (YRD), an area on which people live and farm, has continued and will continue to respond to these controls. This study examines the changing patterns of water and sediment supply to the YRD over the period of 1950-2013 and, using remote sensing, it evaluates the morphological changes of the delta during 1976-2013. Although both water and sediment input to the delta have been described as declining significantly since the mid 1960s, we show that since 2005 the supply of water has remained at around 20 billion m 3 yr −1 and that for sediment at about 0.13 billion t yr −1 ; water input has been even slightly increasing. The dynamics of extension/shrinking and avulsion in river-mouth channels and accretion/erosion of shorelines is an integrated response to the complex variations in both sediment and water supply. This study develops a quantitative relationship between water and sediment supply and the area of land accretion and it predicts the critical condition for land accretion in the YRD. To ensure that delta land will not be lost, care is needed in the future implementation of the basin-scale water regulation program.

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Overbank and channelfill deposits of the modern Yellow River delta

Cited by 91 publications

References 5 publications

River mouth bar formation, riverbed aggradation and channel migration in the modern Huanghe (Yellow) River delta, China

River mouth bar formation, riverbed aggradation and channel migration in the modern Huanghe (Yellow) River delta, China

Facies architecture and palaeoenvironmental implications of the upper Cretaceous (Santonian) Csehbánya formation at the Iharkút vertebrate locality (Bakony Mountains, Northwestern Hungary)

Progradation of the Yellow (Huanghe) River delta in response to the implementation of a basin-scale water regulation program

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