Characteristics of tidal-bore deposits and facies associations in the Qiantang Estuary, China

Fan, Daidu; Tu, Junbiao; Shang, Shuai; Cai, Guofu

doi:10.1016/j.margeo.2013.11.012

Cited by 65 publications

(50 citation statements)

References 39 publications

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“…The data presented by Martinius and Gowland (2011) argue strongly in favor of their interpretation of Jurassic tidal bores, and they are entirely consistent with the observations of Fan et al (2014) on modern bore deposits. Herein, we document deposits from the Pennsylvanian of northeastern Kansas, USA.…”

Section: Introductionsupporting

confidence: 81%

“…They attain 9 m in height (Qiantang River, China) and can penetrate more than 100 km inboard of a shoreline (Kampar River, Indonesia, Garonne River, France). Inherent dangers render difficult the direct study of modern tidal bores, but recent field studies illustrate their sedimentological consequences (Chanson et al 2011;Furgerot et al 2013;Fan et al 2014) as well as physical experiments (Chanson 2005;Chanson 2008, 2009). Published accounts classify bores into undular (tidal-bore Froude number F .…”

Section: Introductionmentioning

confidence: 99%

“…Tessier and Terwindt (1994) and Greb and Archer (2007) have also suggested that soft-sediment deformation structures in some intertidalflat sediments may have been the product of tidal bores. Recently, Fan et al (2014) have provided detailed descriptions of tidal-bore deposits from the Qiantang estuary of eastern China. There, bore deposits comprise a basal, planar to undular erosion surface overlain by massive sand and in turn by sand with planar stratification, all of which are modified by softsediment deformation to varying degrees.…”

Section: Introductionmentioning

confidence: 99%

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Recognition of Tidal-Bore Deposits In the Rock Record: Towards A Facies Model

Fielding¹,

Joeckel²

2015

Journal of Sedimentary Research

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A facies model for the deposits of tidal bores (upstream-propagating hydraulic jumps associated with the flood tide in estuarine rivers) has not yet been developed, despite the publication of data from laboratory experiments and some modern estuaries. Moreover, only one example of tidal-bore deposits has hitherto been identified in the rock record. Herein, we document evidence for tidal bores in an Upper Pennsylvanian (Virgilian, Gzhelian) incised-valley fill in northeastern Kansas, USA. Across the flanks and crest of a bank-attached bar remnant in this fill are thin (, 10 cm) lenses of muddy, massive sandstone and massive, plant-debris-rich sandstone bounded by erosion surfaces exhibiting symmetrical wave ripples and irregular scouring. This interval is enclosed by sandstones with bidirectional cross-stratification, rhythmites, mud drapes, flaser bedding, and related sedimentary structures that together record appreciable tidal influence. The erosion surfaces bounding the massive sandstone lenses, and the massive sandstone lenses themselves, are evidence for scour and sediment suspension by upstream-propagating bores followed by deposition from suspension after their passage. Not only are these deposits the first sedimentary record of tidal bores to be documented in the Pennsylvanian of the USA, they are only the second example of such deposits to be documented in the global rock record. On the basis of our observations, we propose a provisional facies model for tidal-bore deposits that can be refined by future work.

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Section: Introductionsupporting

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Recognition of Tidal-Bore Deposits In the Rock Record: Towards A Facies Model

Fielding¹,

Joeckel²

2015

Journal of Sedimentary Research

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“…The passage of tidal bores was found to place into suspension large amounts of fine sediments, which were advected in the wake of the bore front (WOLANSKI et al 2004. In-situ observations were reported in both small rivers (FURGEROT et al 2016, SIMPSON et al 2004) and large estuarine systems , FAN et al 2014. LENG, X., .…”

Section: Introductionmentioning

confidence: 98%

Turbulence and turbulent flux events in tidal bores: case study of the undular tidal bore of the Garonne River

2017

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The tidal bore of the Garonne River (France) was investigated on 29 August, 31 August and 27 October 2015, during which instantaneous velocity measurements were performed continuously at highfrequency (200 Hz). The tidal bore occurrence had a marked effect on the flow field and turbulent Reynolds stress data, indicating large shear stresses, together with large and rapid fluctuations, during the bore passage and the early flood tide. Like many natural process flows, the tidal bore flow motion was dominated by coherent structure activities and turbulent events, with significant impact on the natural systems including in terms of sediment processes. Herein a new turbulent event analysis was developed for the highly-unsteady rapidly-varied tidal bore flow. The analysis was based upon basic concepts, in which turbulent bursting events were defined in terms of the instantaneous relative turbulent flux, and the method was extended to the rapidly-varied, highly-unsteady tidal bore motion. The turbulent event data showed relatively close results for most fluxes during the tidal bores. The event duration showed some tidal trend, with longer turbulent events immediately after the tidal bore passage, occurring simultaneously with major sediment erosion processes. The field data set and analyses suggested that a turbulent event analysis may be applicable to highly-unsteady rapidly-varied flows, providing quantitative details into the turbulent bursts that are responsible for major mixing and sedimentary processes.

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“…In terms of a 613 deltaic system such an abandoned set of distributary channels are thought of as estuarine 614 due to the fact that they do not carry as much river discharge and also experience 615 . Sandy laminae were found to be well sorted compared to those of muddy laminae, 641 reflecting disparate depositional stages of waning flow and slack tides (Fan et al, 2014). 642…”

Section: Accepted Manuscriptmentioning

confidence: 99%