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dc.contributor.author
Zavala, Carlos Alberto
dc.contributor.author
Arcuri, Mariano Jose
dc.contributor.author
Zorzano, Agustin
dc.contributor.author
Trobbiani, Valentin
dc.contributor.author
Torresi, Antonela
dc.contributor.author
Irastorza, Ainara
dc.date.available
2024-07-12T12:47:53Z
dc.date.issued
2024-01
dc.identifier.citation
Zavala, Carlos Alberto; Arcuri, Mariano Jose; Zorzano, Agustin; Trobbiani, Valentin; Torresi, Antonela; et al.; Deltas: New paradigms; John Wiley & Sons Ltd; The Depositional Record; 2024; 1-2024; 1-37
dc.identifier.issn
2055-4877
dc.identifier.uri
http://hdl.handle.net/11336/239794
dc.description.abstract
Deltas are deposits directly accumulated by land-generated gravity flows in a standing body of water. The paradigm of deltaic sedimentation has dramatically changed during recent years, from the popular very simplified ternary models of marine littoral deltas towards more realistic and comprehensive models, considering the importance of sediment-laden river discharges. Ternary delta models were designed for clean rivers, where a stream flow drags the sediments. Depending on the basin dynamics, these littoral deposits can be modified, forming tidal-dominated, wave-dominated or fluvial-dominated littoral deltas. In recent years, a new classification of delta systems was proposed, based on contrasting the salinity of the receiving water body with the bulk density of the incoming fluvial discharge. Rivers are highly dynamic systems, and their discharges can be very variable in terms of flow duration and sediment concentration. Additionally, the salinity of the receiving water body can exhibit significant variability, especially in closed lakes and epicontinental seas, ranging from freshwater to brines. This scenario allows the distinction of three major delta categories (hypopycnal, homopycnal and hyperpycnal deltas) which can be in turn subdivided, defining seven delta types. Hypopycnal deltas form when the bulk density of the incoming flow is lower than the density of the water in the basin, allowing the definition of three delta types, corresponding to hypersaline littoral deltas, marine littoral deltas and brackish littoral deltas. Homopycnal deltas form when the bulk density of the incoming flow is similar to the density of the water in the basin, defining a delta type termed homopycnal littoral deltas. Hyperpycnal deltas form when the bulk density of the incoming flow is higher than the density of the water in the basin, allowing the definition of three categories termed hyperpycnal littoral deltas, hyperpycnal subaqueous deltas and hyperpycnal fan deltas.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
John Wiley & Sons Ltd
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
DELTAS
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GRAVITY FLOWS
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HYPERPYCNAL FLOWS
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TURBIDITES
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Geología
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Deltas: New paradigms
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-07-11T15:49:29Z
dc.journal.volume
2024
dc.journal.pagination
1-37
dc.journal.pais
Reino Unido
dc.description.fil
Fil: Zavala, Carlos Alberto. Universidad Nacional del Sur. Departamento de Geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina
dc.description.fil
Fil: Arcuri, Mariano Jose. Gcs Argentina Srl; Argentina. Universidad Nacional del Sur. Departamento de Geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina
dc.description.fil
Fil: Zorzano, Agustin. Gcs Argentina Srl; Argentina
dc.description.fil
Fil: Trobbiani, Valentin. Universidad Nacional del Sur. Departamento de Geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina
dc.description.fil
Fil: Torresi, Antonela. Gcs Argentina Srl; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina. Universidad Nacional del Sur. Departamento de Geología; Argentina
dc.description.fil
Fil: Irastorza, Ainara. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina. Universidad Nacional del Sur. Departamento de Geología; Argentina
dc.journal.title
The Depositional Record
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1002/dep2.266
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/dep2.266
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