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dc.contributor.author
Argüello Scotti, Agustín  
dc.contributor.author
Veiga, Gonzalo Diego  
dc.date.available
2020-11-18T13:44:04Z  
dc.date.issued
2019-10  
dc.identifier.citation
Argüello Scotti, Agustín; Veiga, Gonzalo Diego; Sedimentary architecture of an ancient linear megadune (Barremian, Neuquén Basin): Insights into the long-term development and evolution of aeolian linear bedforms; Wiley Blackwell Publishing, Inc; Sedimentology; 66; 6; 10-2019; 2191-2213  
dc.identifier.issn
0037-0746  
dc.identifier.uri
http://hdl.handle.net/11336/118598  
dc.description.abstract
Linear aeolian bedforms are the most abundant bedform type in Earth´s dune fields, and are very common in the Solar System. Despite their abundance, the long-term development of these bedforms and its impact upon the resulting sedimentary architecture in the geological record is still poorly understood. The aim of this paper is to study the exposed record of an ancient linear megadune in order to discuss its development and the factors that impact the sedimentary architecture of aeolian linear bedforms. The outcrops of the ancient Troncoso Sand Sea (Barremian, Neuquén Basin, Argentina) provide a unique opportunity to study a preserved megadune record with an external body geometry that confirms its linear morphology. Architectural analysis reveals significant differences in cross-stratified set bodies and bounding surfaces? features and allows for the identification of three architectural complexes within the bedform´s record. Analysis of deterministic models, sedimentary body relative chronology and distribution suggest that these architectural complexes result from distinctive phases in bedform development. It also clearly shows that construction of the megadune was achieved by expansion from a core, and that its development was characterized by sustained growth and strong longitudinal dynamics, without net accumulation. This study indicates how sustained bedform growth, rather than accretion, can be a critical factor conditioning linear bedform architecture towards a more classic (bimodal bounding surface and cross-bedding dip directions) concentric sedimentary architecture style. Furthermore, this research reveals how this style of architecture could only be relatively common in the geological record when related to bedform topography preservation.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Wiley Blackwell Publishing, Inc  
dc.rights
info:eu-repo/semantics/restrictedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
AEOLIAN LINEAR BEDFORMS  
dc.subject
BEDFORM DEVELOPMENT  
dc.subject
CRETACEOUS  
dc.subject
NEUQUÉN BASIN  
dc.subject
SEDIMENTARY ARCHITECTURE  
dc.subject
TRONCOSO INFERIOR  
dc.subject.classification
Geología  
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Sedimentary architecture of an ancient linear megadune (Barremian, Neuquén Basin): Insights into the long-term development and evolution of aeolian linear bedforms  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2020-11-17T18:30:22Z  
dc.journal.volume
66  
dc.journal.number
6  
dc.journal.pagination
2191-2213  
dc.journal.pais
Reino Unido  
dc.journal.ciudad
Londres  
dc.description.fil
Fil: Argüello Scotti, Agustín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina  
dc.description.fil
Fil: Veiga, Gonzalo Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina  
dc.journal.title
Sedimentology  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1111/sed.12597  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1111/sed.12597