Tidal Constituents of Modern and Ancient Tidal Rhythmites: Criteria for Recognition and Analyses

Kvale, Erik P.

doi:10.1007/978-94-007-0123-6_1

Cited by 44 publications

(50 citation statements)

References 18 publications

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“…The unidirectionality of sedimentary structures suggests river dominance, but rare rhythmic carbonaceous drapes are interpreted as indicating tidally modulated bedforms (Martinius and Gowland 2011) that form in the fluvial to marine transition zone (Dashtgard et al 2012) and not in purely tidal settings. However, the majority of carbonaceous drapes usually lack rhythmicity consistent with tidal processes (Kvale 2012;Longhitano et al 2012); thus a tidal origin cannot be inferred (Martinius and Gowland 2011). The presence of silicified logs and carbonaceous and plant debris indicates sediment input from emergent vegetated areas.…”

Section: Fa 1: Large-scale Erosionally Based Lenticular Sandstone Umentioning

confidence: 97%

Stratigraphic Record of River-Dominated Crevasse Subdeltas With Tidal Influence (Lajas Formation, Argentina)

Gugliotta¹,

Flint²,

Hodgson³

et al. 2015

Journal of Sedimentary Research

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Crevasse subdeltas develop on modern river-dominated delta plains, and may be affected by the interaction of river currents and marine processes. However, their sedimentology and stratigraphic architecture is poorly constrained, leading to simplistic depositional models of delta-plain systems in the ancient record. Extensive exposures of the Middle Jurassic Lajas Formation permit the architecture, main stratigraphic surfaces, and lateral and vertical facies variations of crevasse subdelta deposits to be constrained. Lower-delta-plain successions studied in the Lajas Formation consist of up to 5-m-thick distributary channels and interdistributary-bay deposits, interpreted as crevasse subdeltas. Crevasse subdelta deposits consist of small-scale lenticular units (, 1-2 m thick) interpreted as crevasse channels and upward-coarsening and upward-thickening packages (, 2 m thick) with clinothems interpreted as crevasse mouth bars. These deposits preserve interbedding of coarser and finer sediments that are interpreted as river flood and interflood couplets associated with variations in river discharge. River flood beds are commonly structureless and erosionally based, and show little evidence of tidal action and brackish-water conditions. Interflood deposits show rhythmically distributed mudstone drapes, bimodality, and brackish trace fossils. This study highlights an important but largely undocumented component of interdistributary deposits consisting of tide-influenced, but strongly riverdominated, prograding depositional bodies. An implication is that some coarsening-upward, forward-accreting units previously interpreted from the rock record as interchannel ''tidal bars'' may instead represent minor mouth bars of tide-influenced crevasse subdeltas. Furthermore, present-day crevasse subdeltas are restricted to river-dominated delta systems that flow into semi-enclosed or enclosed seas and lakes with microtidal conditions and limited wave action, which is comparable to paleogeographic reconstructions for the Neuquén Basin during the Middle Jurassic.

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Section: Fa 1: Large-scale Erosionally Based Lenticular Sandstone Umentioning

confidence: 97%

Stratigraphic Record of River-Dominated Crevasse Subdeltas With Tidal Influence (Lajas Formation, Argentina)

Gugliotta¹,

Flint²,

Hodgson³

et al. 2015

Journal of Sedimentary Research

View full text Add to dashboard Cite

show abstract

“…The sigmoidal cross-strata are generated by migration of linguoid ripples (Baas and de Koning, 1995) or 'humpback ripples' (Sunderson and Lockett, 1983), formed at higher tidal flow velocity than the laterally accreted bundles (Kreisa and Moiola, 1986;Bhattacharya et al, 2012). Thickness variation of the foresets with variable mud thickness and abundance of double mud drapes suggest fluctuations caused by diurnal inequality under predominantly semidiurnal tidal system (Greb and Martino, 2005;Kvale, 2006Kvale, , 2012. Type-2 tidalites, represented by sandy ripple cross-strata with mud drapes, indicate sand-depositing traction current activity alternating with mud-depositing suspension sedimentation during quiescent periods (Reineck and Singh, 1980), and commonly signify periodic flow fluctuations in subtidal to intertidal zones (Reineck and Wunderlich, 1968).…”

Section: Implications Of Tidal Sedimentationmentioning

confidence: 98%

Record of Permian Tethyan transgression in eastern India: A reappraisal of the Barren Measures Formation, West Bokaro Coalfield

Bhattacharya

Banerjee

2015

Marine and Petroleum Geology

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“…This facies is wholly consistent with so-called "tidal rhythmites" documented from modern and ancient tidal settings (Reineck and Singh, 1980;Nio and Yang, 1991;Kvale, 2012). Rapid rates of sedimentation, possibly daily over discrete periods, are indeed indicated by the lack of animal bioturbation.…”

Section: Facies Est4 -Tidal Rhythmitementioning

confidence: 71%

Onset of the glacioeustatic signal recording late Palaeozoic Gondwanan ice growth: New data from palaeotropical East Fife, Scotland

Fielding

Frank

2015

Palaeogeography, Palaeoclimatology, Palaeoecology

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Tidal Constituents of Modern and Ancient Tidal Rhythmites: Criteria for Recognition and Analyses

Cited by 44 publications

References 18 publications

Stratigraphic Record of River-Dominated Crevasse Subdeltas With Tidal Influence (Lajas Formation, Argentina)

Stratigraphic Record of River-Dominated Crevasse Subdeltas With Tidal Influence (Lajas Formation, Argentina)

Record of Permian Tethyan transgression in eastern India: A reappraisal of the Barren Measures Formation, West Bokaro Coalfield

Onset of the glacioeustatic signal recording late Palaeozoic Gondwanan ice growth: New data from palaeotropical East Fife, Scotland

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