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dc.contributor.author
Veiga, Gonzalo Diego
dc.contributor.author
Schwarz, Ernesto
dc.contributor.author
Finzel, Emily
dc.date.available
2022-04-01T17:39:54Z
dc.date.issued
2019
dc.identifier.citation
Reconstructing the large-scale sediment delivery systems during the Early Cretaceous in the Neuquén Basin (Argentina); 34th International Meeting of Sedimentology; Roma; Italia; 2019; 850-850
dc.identifier.isbn
978-88-944576-2-9
dc.identifier.uri
http://hdl.handle.net/11336/154191
dc.description.abstract
One of the most challenging aspects when analyzing the stratigraphic architectures ofancient basins is to constrain the extent and dynamics of the sedimentary systems involvedin its record. Especially when considering clastic delivery systems in a source-to-sinkapproach, it is important to evaluate how large the transfer systems from the continent tothe basin were and the volume of sediment that had been transferred through these systemsin order to define the drainage length and catchment size that are key when trying to buildrealistic palaeogeographic reconstructions.The Neuquén Basin, developed in the SWmargin of Gondwana during the Mesozoic, evolved as a shallow, large embaymentconnected to the proto-Pacific Ocean through gaps in a volcanic arc, and limited by cratonicareas to the northeast and southeast. Despite that the amount of clastic input to the marinebasin changed through the basin´s history, large-scale fluvial systems sourced from theeast/southeast were commonly developed as the main delivery systems of large volumes ofclastic material. Even when the record of these delivery systems in the Neuquén Basin iswell known in the stratigraphy and has been widely described in the literature, detail on thelarge-scale reconstruction of these systems, as well as on the relationship betweencatchment areas and the extension and evolution of the fluvial/deltaic systems is still sparseand far from integrated at a basin scale. The combination of outcrop and subsurface data,together with highly reliable chrono/biostratigraphic constrains, was used to build a highresolution Sequence stratigraphic scheme for the late Valanginian-early Hauterivian of theNeuquén Basin. The record of this period shows the development of a fluvial/deltaic systemthat sourced large volumes of clastic material from the east, with different degrees ofstorm/wave reworking within the basin. Through detailed definition of different hierarchies ofsequences, the extent of the fluvial/delta plain environment could be reconstructed atdifferent stages in order to understand the evolution of the delta plain, as well as the relativeimportance of fluvial processes versus waves and storms influence. Based on these datathe evolution of this deltaic system can be divided in three stages with a differentcombination of rate of progradation (basinward extent of the delta plain), location of the mainentry point/s and relative proportion of fluvial and marine processes. A quantification of thevolume of clastic material delivered by these systems can then be contrasted withpalaeohydrological estimates at these different stages of evolution, which gives key data toconstrain the potential size of corresponding catchments. The large-scale reconstruction ofthe delivery systems, the estimation of the length of the drainage, and a preliminary analysisof detrital zircons in the studied sediments open new perspectives on the role of theNeuquén Basin in the paleogeography of SW Gondwana during the Early Cretaceous.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
International Association of Sedimentology
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
PILMATUÉ MEMBER DELIVERY SYSTEMS
dc.subject
EARLY CRETACEOUS
dc.subject
NEUQUÉN BASIN
dc.subject
GONDWANA
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
Reconstructing the large-scale sediment delivery systems during the Early Cretaceous in the Neuquén Basin (Argentina)
dc.type
info:eu-repo/semantics/publishedVersion
dc.type
info:eu-repo/semantics/conferenceObject
dc.type
info:ar-repo/semantics/documento de conferencia
dc.date.updated
2022-03-16T20:30:04Z
dc.journal.pagination
850-850
dc.journal.pais
Italia
dc.journal.ciudad
Roma
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.description.fil
Fil: Schwarz, Ernesto. 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: Finzel, Emily. University of Iowa; Estados Unidos
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://iasroma2019.org/
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://iasroma2019.org/wp-content/uploads/2019/10/detailed_programme-compresso.pdf
dc.conicet.rol
Autor
dc.conicet.rol
Autor
dc.conicet.rol
Autor
dc.coverage
Internacional
dc.type.subtype
Reunión
dc.description.nombreEvento
34th International Meeting of Sedimentology
dc.date.evento
2019-09-10
dc.description.ciudadEvento
Roma
dc.description.paisEvento
Italia
dc.type.publicacion
Book
dc.description.institucionOrganizadora
International Association of Sedimentology
dc.source.libro
Abstract Book: 34th International Meeting of Sedimentology
dc.date.eventoHasta
2019-09-13
dc.type
Reunión
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