Tidally Modulated Storm Sedimentation on Open-Coast Tidal Flats, Southwestern Coast of Korea: Distinguishing Tidal-Flat from Shoreface Storm Deposits

Yang, Byongcheon; Dalrymple, Robert W.; Chun, Sejong; Johnson, Michael F.; Lee, Hee Jun

doi:10.2110/pec.08.90.0161

Cited by 14 publications

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“…1b and 2). Because these tidal flats are fully exposed to the Yellow Sea, they are subject to intensive wave attack during the winter (Yang et al, 2004a). The only topographic undulations on the tidal flats are subtle, shore-parallel swash bars that are dissected by shore-normal runoff channels (Fig.…”

Section: Study Areamentioning

confidence: 99%

Transgressive sedimentation and stratigraphic evolution of a wave-dominated macrotidal coast, western Korea

et al. 2006

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Section: Study Areamentioning

confidence: 99%

Transgressive sedimentation and stratigraphic evolution of a wave-dominated macrotidal coast, western Korea

et al. 2006

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“…These described bedforms in this study are superficial and thus potentially unrelated to the sedimentary structures preserved below the surface (e.g. Yang et al, 2005Yang et al, , 2008a. The seven observed bedforms are generated during fair-weather condition, which implies that they could be removed during each storm and then not being recorded (Immenhauser, 2009) and thus, storm deposits could have a highest preservation potential (e.g.…”

Section: Theoretical Sequence Of Faciesmentioning

confidence: 80%

“…Basilici et al, 2011Basilici et al, , 2012Vakarelov et al, 2012;Rossi and Steel, 2016;Smosna and Bruner 2016;Vaucher et al, 2017). This study however, allows to partially complete the different theoretical sedimentary successions of tidally modulated shorefaces illustrated in Dashtgard et al, (2012) and described in Yang et al, (2008a). The inventory of the different described bedforms of Berck-Plage provides new key criteria of recognition for ancient hybrid (wave and tide) sedimentary systems and then is helpful for paleoenvironment reconstructions.…”

Section: Theoretical Sequence Of Faciesmentioning

confidence: 99%

“…Ruessink and Kroon, 1994;Ruessink and Terwindt, 2000;Grunnet and Ruessink, 2005) through the intertidal zone implies that the seven bedforms can potentially be stacked together; and/or (2) a fast relative sea level rise combined with a high aggradation rate (e.g. Wheatcroft, 1990, Yang et al, 2008a.…”

Section: Theoretical Sequence Of Faciesmentioning

confidence: 99%

“…Modern environments have been investigated (e.g. Yang and Chun, 2001;Yang et al, 2005Yang et al, , 2006Yang et al, , 2008aDashtgard et al, 2009Dashtgard et al, , 2012 and the double influence (waves and tides) was clearly pointed out by sedimentological and/or ichnological evidences. These studies on modern environments are mainly based on boxcore analysis, thus giving a vertical (temporal) view to the observations but do not allow to understand the timing of formation of each bedform as well as their lateral evolution.…”

Section: Introductionmentioning

confidence: 99%

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Bedforms in a tidally modulated ridge and runnel shoreface (Berck-Plage; North France): implications for the geological record

Vaucher

Pittet

Passot

et al. 2018

BSGF - Earth Sci. Bull.

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-Tidally modulated shoreface (TMS) corresponds to peculiar costal environments. The general morphology and the expressed bedforms are provided by the interplay of both waves and tides. The recognition of TMS in the fossil record still remains a difficult task. The study of one mega-tidal modern TMS in the north of France (Berck-Plage) provides new key criteria to identify this kind of coastal system in the rock record. Field investigation and digital mapping were realized at lowest tide during spring tide under fair-weather condition. The intertidal zone is characterized by a succession of several sand banks shore parallel separated by topographic lows that are defined as ridges and runnels. Seven distinct dominant bedforms are recognized: 3D current ripples, 3D asymmetrical ripples, 2D symmetrical ripples, 2D small symmetrical dunes, 2D large symmetrical dunes, 3D symmetrical dunes and plane beds. The upper stage plane bedding mainly composed the ridges while the six other bedforms are commonly found within the runnels or on the flanks of the ridges. Comparison of the bedforms of Berck-Plage with previous experimental studies on bedforms genesis proves that the necessary flow parameters for generating these bedforms belong to an oscillatory flow except for the 3D current ripples, which are formed by a unidirectional flow. This study confirms the dominance of oscillatory structures through the intertidal zone in a mega-tidal context and show that wave processes are more powerful than tide processes for bedform generation although during fair weather conditions. Based on the timing of genesis, the description and the repeated pattern of distribution of bedforms between two ridges is highlighted thus helping to propose a theoretical facies sequence for an intertidal zone characterized by ridges and runnels applicable to ancient sedimentary successions.Keywords: waves / tides / ridge and runnel / bedforms / stratigraphy / Berck-Plage / France Résumé -Structures sédimentaires d'une zone intertidale en barre et bâches dominée par la houle (Berck-Plage ; Nord de la France) : implications pour le registre sédimentaire ancien. Les plages et avant-plages sous l'influence de la houle et modulées par l'action de la marée, correspondent à des environnements côtiers particuliers. Leurs géomorphologies générales ainsi que les structures sédimentaires associées résultent de l'action combinée de la houle et de la marée. L'identification de ces environnements atypiques dans des successions sédimentaires anciennes demeure difficile. L'analyse d'un environnement mégatidal semi-diurne actuel dans le Nord de la France (Berck-Plage) a permis de fournir de nouveaux critères de reconnaissance pour ce type de système côtier hybride dans le fossile. Une étude de terrain ainsi qu'une cartographie numérique ont été réalisées à marée basse au cours d'une marée de vives-eaux. La zone intertidale est caractérisée par une succession de plusieurs bancs de sables parallèles à la côte et qui sont définies comme des barres (topographie po...

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Mixed depositional processes in coastal to shelf environments: Towards acknowledging their complexity

Zuchuat

Gugliotta

Poyatos‐Moré

et al. 2023

The Depositional Record

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Tidally Modulated Storm Sedimentation on Open-Coast Tidal Flats, Southwestern Coast of Korea: Distinguishing Tidal-Flat from Shoreface Storm Deposits

Cited by 14 publications

References 0 publications

Transgressive sedimentation and stratigraphic evolution of a wave-dominated macrotidal coast, western Korea

Transgressive sedimentation and stratigraphic evolution of a wave-dominated macrotidal coast, western Korea

Bedforms in a tidally modulated ridge and runnel shoreface (Berck-Plage; North France): implications for the geological record

Mixed depositional processes in coastal to shelf environments: Towards acknowledging their complexity

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