Inclined heterolithic stratification in a mixed tidal–fluvial channel: Differentiating tidal versus fluvial controls on sedimentation

Johnson, Stacey M.; Dashtgard, Shahin E.

doi:10.1016/j.sedgeo.2013.12.004

Cited by 78 publications

(70 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Channel migration often leads to the deposition of inclined heterolithic stratification (IHS) on the point bars of channels in fluvially dominated to tide-dominated settings (Thomas et al 1987;Choi 2010;Sisulak and Dashtgard 2012;Choi et al 2013;Johnson and Dashtgard 2014). Facies and stratigraphic architecture of IHS are typically complex (Thomas et al 1987;Makaske and Nap 1995;Dalrymple and Choi 2007;Hovikoski et al 2008;Hubbard et al 2011;Labrecque et al 2011;Fustic et al, 2012;Nardin et al 2012;Sisulak and Dashtgard 2012;Legler et al, 2013;Johnson and Dashtgard 2014), because multiple interrelated factors are involved in the genesis of IHS.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Facies and stratigraphic architecture of IHS are typically complex (Thomas et al 1987;Makaske and Nap 1995;Dalrymple and Choi 2007;Hovikoski et al 2008;Hubbard et al 2011;Labrecque et al 2011;Fustic et al, 2012;Nardin et al 2012;Sisulak and Dashtgard 2012;Legler et al, 2013;Johnson and Dashtgard 2014), because multiple interrelated factors are involved in the genesis of IHS. More importantly, the intensity and frequency of the factors vary on different spatio-temporal scales (Johnson and Dashtgard 2014). Even IHS formed in a seaward end member, such as a macrotidal environment without fluvial influence, is complicated by nontidal processes such as waves and rainfall (Choi et al 2004;Pearson and Gingras 2006;Pilditch et al 2008;Choi 2011;Choi et al 2013;Nowacki and Ogston 2013).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Morphodynamics of Tidal Channels In the Open Coast Macrotidal Flat, Southern Ganghwa Island In Gyeonggi Bay, West Coast of Korea

Choi

2015

Journal of Sedimentary Research

View full text Add to dashboard Cite

Morphodynamics of intertidal channels were monitored in order to understand their implication on the architecture of inclined heterolithic stratification (IHS) in the open-coast Yeochari macro tidal flat on southern Ganghwa Island in Gyeonggi Bay, west coast of Korea. The tidal flat is divisible into narrow salt marshes in the upper intertidal zone, a concave-up upper to middle intertidal zone with small tidal creeks, and a channelized lower intertidal zone. Channels in the lower intertidal zone are 200-600 m wide and 1-2.5 m deep at bankful stage. They are sinuous in planform and have well-defined point bars and cutbanks. IHS is exposed along the cutbanks. High-precision leveling of the tidal channel bank unveiled that a point bar in the lower intertidal zone migrated about 400 m in 39 months. Channel migration is pronounced during the summer rainy season, when the point bar migrated as fast as 40 m per month, which led to rapid sediment accumulation of as much as 40 cm per month. In contrast, channel migration rate during winter is notably reduced, down to less than 1 m per month. Point-bar geometry alternates between a concave-up profile in summertime and a convex-up profile during the remainder of the year. Enhanced ebb currents during the rainy season, due to increased runoff discharge caused by heavy precipitation, accelerated point-bar migration. Remarkable rill erosion induced by heavy precipitation especially during low tide led to the rapid accumulation of sediment at the lower part of the point bar and the channel base, creating concave-up point-bar geometry. During the remainder of the year, the point bar retains a convex-up profile by continued sedimentation with insignificant rill erosion. Wave activity, particularly during winter, seems to facilitate deposition in the upper part of the point bar by providing more sediment into the channel. The present study illuminates the fact that the stratigraphic architecture of IHS of intertidal origin is controlled largely by monsoonal weather and to a lesser degree by tidal process even in a macrotidal environment. Careful examination of IHS geometry may hint at the depositional setting in terms of tidal frame (intertidal versus subtidal) and climate regime (monsoonal versus non-monsoonal).

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Morphodynamics of Tidal Channels In the Open Coast Macrotidal Flat, Southern Ganghwa Island In Gyeonggi Bay, West Coast of Korea

Choi

2015

Journal of Sedimentary Research

View full text Add to dashboard Cite

show abstract

“…Modern examples of Ihs are recorded from river-dominated (Smith et al, 2009), mixed river and tide (Sisulak and Dashtgard, 2012), and tide-dominated channels (e.g., Dalrymple and Choi, 2007;Choi, 2010). This facies association is thus related to tidally-influenced fluvial deposits in an estuarine environment, where the alternating sandstone and finer sediment beds are attributed to alternations in the energy of the system (Johnson and Dashtgard, 2014). (Facies Slp, Ssc, Sr, SsM, Mm, Fe; Table 1 Fig.…”

Section: Discussionmentioning

confidence: 96%

“…These inclined beds and surfaces are interpreted to have arisen via dominantly lateral accretion. They are usually considered as originated by meandering channels with sedimentation in the inside part of the meander, related to the fluvial-tidal transition (Dalrymple and Choi, 2007;Choi, 2010;Johnson and Dashtgard, 2014). These lateral-accretion bedding are formed by the migration of attached and point bars, and they are erosively based, because of the migration of the basal part of the channel.…”

Section: Discussionmentioning

confidence: 99%

Depositional architecture and peculiar sedimentary features of late Cretaceous Utrillas Formation at Tamajón (Guadalajara, Spain)

García-Hidalgo¹,

Gil-Gil

Segura

et al. 2016

Journal of Iberian Geology

View full text Add to dashboard Cite

The Utrillas Formation represents clastic wedges that accumulated in relation to continental-coastal areas of Iberian Basin during the worldwide Late Cretaceous sea-level rise. At the Tamajón outcrop the Late Cenomanian Utrillas wedges are composed of four facies associations (FA1 to FA4), which unconformably overlay Triassic deposits. Basal sediments (FA1) are interpreted as high energy, braided fluvial deposits, characterized by coarse-grained (conglomerate-sandstone) facies; which grade upwards to tide-influenced, estuarine sedimentation (sandstones and mudstones with inclined heterolithic stratification, FA2), and then to high-energy, coastal sheet and channelled sandstones with different tidal features (FA3); and finally, to fine-grained (mudstones and minor burrowed sandstones) of an offshore marine associations (FA4). The depositional architecture based in the presence and hierarchy of several ranks of bounding surfaces and the overall upward-fining succession show the long term retrogradational trend of these facies associations. Peculiar sedimentary features of these sediments are 1) the presence of large-scale, single sets of cross beds infilling large erosive channels, which are tidal in origin. 2) The size and length of the cross-bedding defined by couplets of different grain size; here interpreted as originated by flow unsteadiness in relation to changing tides. And 3) an unusual association of ironstones, wrinkle structures and vertebrate tracks with microbial mats and penecontemporaneous iron encrusting allowing track preservation in the sedimentary record.Keywords: continental-coastal facies, large-scale channels, ferruginous crusts, wrinkle marks, vertebrate tracks, Cenomanian. ResumenLa Formación Utrillas está compuesta por una serie de cuñas clásticas que se depositaron en las áreas continentales y costeras de la Cuenca Ibérica durante el ascenso eustático global del Cretácico Superior. En el afloramiento de Tamajón las cuñas del Cenomaniense Superior de la Formación Utrillas están compuestas por 4 asociaciones de facies (FA1 a FA4), que se disponen discordantes sobre materiales triásicos. Los sedimentos basales (FA1) se interpretan como depósitos de sistemas fluviales de tipo braided, de alta energía, caracterizados por facies de grano grueso (conglomerados y areniscas); que pasan hacia techo a facies estuarinas con influencia mareal (areniscas y lutitas con estratificación heterolítica inclinada, FA2), y estas a areniscas tabulares y canalizadas costeras de alta energía que presentan diferentes características mareales (FA3); y, finalmente la sucesión da paso a una asociación marina somera (FA4), de grano fino y baja energía (lutitas con areniscas bioturbadas subordinadas). La arquitectura deposicional se basa en la presencia y jerarquía de varios rangos de superficies erosivas y la tendencia granodecreciente general de la sucesión, que caracteriza la tendencia retrogradacional general de esas asociaciones de facies. Los materiales estudiados presentan una serie de características se...

show abstract

Controls on the depositional architecture of fluvial point‐bar elements in a coastal‐plain succession

Shiers

Mountney

Hodgson

et al. 2018

Fluvial Meanders and Their Sedimentary Products in the Rock Record

View full text Add to dashboard Cite

Inclined heterolithic stratification in a mixed tidal–fluvial channel: Differentiating tidal versus fluvial controls on sedimentation

Cited by 78 publications

References 29 publications

Morphodynamics of Tidal Channels In the Open Coast Macrotidal Flat, Southern Ganghwa Island In Gyeonggi Bay, West Coast of Korea

Morphodynamics of Tidal Channels In the Open Coast Macrotidal Flat, Southern Ganghwa Island In Gyeonggi Bay, West Coast of Korea

Depositional architecture and peculiar sedimentary features of late Cretaceous Utrillas Formation at Tamajón (Guadalajara, Spain)

Controls on the depositional architecture of fluvial point‐bar elements in a coastal‐plain succession

Contact Info

Product

Resources

About