Quantitative characterization of the sedimentary architecture of Gilbert-type deltas

Budai, Soma; Colombera, Luca; Mountney, Nigel P.

doi:10.1016/j.sedgeo.2021.106022

Cited by 7 publications

(8 citation statements)

References 69 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…ini tial depth of the wa ter body into which the delta was built; changes in ba sin depth through de po si tion, which may be due to rel a tive base-level rise or delta progradation into deeper ba sin ar eas. The ar chi tec tural ex pres sion of this is man i fested in basinwards delta-foreset growth (Budai et al, 2021).…”

Section: Areal Distribution and Stratigraphic Architecture Of The Brn...mentioning

confidence: 99%

“…How ever, depos its which might be in ter preted as bottomset are not described in ei ther bore holes or ex po sures of the BS. A miss ing bottomset in the prox im ity of Gilbert-type delta nu cle ation and its ev i dence only in sec tions lo cated far ther basinwards are men tioned by Budai et al (2021). There fore, it is no tice able that sev eral metre-thick heterolithic beds com posed of centi metreto decimetre-thick al ter na tions of fine-to me dium-grained sand and mud with iso lated float ing peb bles and cob bles (of granitoid, lime stone, quartz, con glom er ate, and mudstone intraclasts, i.e.…”

mentioning

confidence: 98%

“…Miss ing ev i dence of topsets at the ma jor ity of ex po sures is ex plained by the rapid drown ing of the delta by the next transgres sion with a rapid upslope shift of the fa cies belt, and could also point to a nar row deltaic plain typ i cal of high-re lief basement set tings (Nemec, 1990). Topset ab sence is com monly explained by ero sion due to base-level-fall (Budai et al, 2021). The pos si bil ity that all avail able logs were mea sured basinwards of the point of max i mum delta brink progradation is less prob a ble.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Stacked Gilbert-type deltas filling an incised palaeovalley along the cratonward margin of a foreland basin (Miocene, Western Carpathian Foredeep)

Nehyba

2022

View full text Add to dashboard Cite

The coarse-grained Brno sands are an im por tant ground wa ter aqui fer and rep re sent a vol u met ri cally sig nif i cant com po nent of the Lower Badenian/Mid dle Mio cene sed i men tary infill of the West ern Carpathian Foredeep, a fore land ba sin formed on the east ern mar gin of the Bo he mian Mas sif in front of the West ern Carpathians. The in te gra tion of core and out crop fa cies anal y sis, sum mary of fa cies fea tures, depositional pro cesses and ar chi tec tures, and in te gra tion of prov e nance anal y sis have led to a new depositional model for the Brno sands as the prod uct of Gilbert-type delta sys tems prograding into an incised palaeovalley de vel oped on the outer fore land ba sin mar gin. The po si tion, shape and mor phol ogy of the palaeovalley were in flu enced by pre-Neo gene base ment faults trending NW-SE. The Gilbert-type del tas rec og nized can be clas si fied as foreset-dom i nated with other el e ments sub or di nate. The foreset beds mainly re flect low-den sity turbidites, with var ied but impor tant ev i dence of de pos its of high-den sity tur bid ity cur rents, cohesionless de bris flows and de bris falls. The thick foreset de pos its show, in de tail, re pet i tive suc ces sive prograding-ret ro grad ing ep i sodes. These are in ter preted as rapid high -frequency pulses of rel a tive sea level change i.e. as high-fre quency depositional se quences. The deltaic de po si tion of the Brno sands was ter mi nated by de pos its of a shoal-wa ter delta and the sands were fi nally drowned by a thick pile of off shore pelagic clays. The prov e nance of Brno sands is lo cated into the nearby geo log i cal units. Redeposition from the older ba sin infill also played an im por tant role.

show abstract

Section: Areal Distribution and Stratigraphic Architecture Of The Brn...mentioning

confidence: 99%

mentioning

confidence: 98%

mentioning

confidence: 99%

See 1 more Smart Citation

Stacked Gilbert-type deltas filling an incised palaeovalley along the cratonward margin of a foreland basin (Miocene, Western Carpathian Foredeep)

Nehyba

2022

View full text Add to dashboard Cite

show abstract

“…Quantitative studies provide a means for the systematic investigation of scaling relationships across and within sedimentary environments, with consideration of environmental controls such as climate, hydrodynamic processes, or tectonic setting, which dictate sediment source areas, transport pathways and sinks (e.g. Wang et al, 2019;Budai et al, 2021;Cosgrove et al, 2021). Such studies enable an assessment of the relative importance of autogenic versus allogenic controls on aspects of the geomorphology, architecture and facies characteristics of subenvironments, and of scaling-relationships they may exhibit.…”

Section: Introductionmentioning

confidence: 99%

A global analysis of controls on submarine-canyon geomorphology

Bührig¹,

Colombera²,

Patacci³

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

The role of possible controlling factors in influencing the geomorphology of submarine canyons has been investigated using a database of 282 globally distributed modern examples collated from the literature, open-source worldwide bathymetry and satellite imagery. Canyon geomorphology has been characterized quantitatively in terms of maximum and average canyon dimensions, canyon sinuosity, the average canyon thalweg gradient, and maximum canyon sidewall steepness. Geomorphological variations with respect to position of the canyon apex relative to the shelf break, continental-margin type, terrestrial source-to-sink system setting, oceanographic environment, and climate zones have been assessed. Scaling relationships between canyon morphometric parameters, and between them and attributes of their physiographic setting, their terrestrial catchments, and attributes of continental shelves and slopes have been quantified.Key findings are as follows: (i) a number of scaling relationships describing canyon morphometry (e.g. scaling between maximum canyon dimensions, relationships of maximum canyon sidewall steepness with maximum canyon width and depth) can be recognized globally, suggesting their general predictive value; (ii) possible causal links are identified between hydrodynamic processes (e.g. upwelling, longshore- and along-slope currents) and canyon morphology; (iii) potential predictors of canyon geomorphology include whether a canyon is incised into the shelf or confined to the slope, the continental-margin type, the oceanographic environment, latitude, and shelf-break depth; (iv) similarity in maximum width-to-maximum depth ratios across all settings suggests that the relative magnitudes of canyon-margin erosion and intra-canyon deposition do not vary greatly depending on setting or canyon size.The relationships between canyon geomorphology and environmental variables identified in this study may be incorporated into conceptual models describing canyon geomorphology and its relationship to other elements of deep-water systems, and into its broader source-to-sink context.

show abstract

“…Quantitative studies provide a means for the systematic investigation of scaling relationships across and within sedimentary environments, with consideration of environmental controls such as climate, hydrodynamic processes, or tectonic setting, which dictate sediment source areas, transport pathways and sinks (e.g. Wang et al, 2019Wang et al, , 2020Budai et al, 2021;Cosgrove et al, 2021). Such studies enable an assessment of the relative importance of autogenic versus allogenic controls on aspects of the geomorphology, architecture and facies characteristics of subenvironments, and of scaling-relationships they may exhibit.…”

Section: Introductionmentioning

confidence: 99%