Intermontane Eolian Sand Sheet Development, Upper Tulum Valley, Central-western Argentina

dc.creatorFuhr Dal' Bo
dc.creatorPatrick Francisco; Basilici
dc.creatorGiorgio
dc.date2015-AUG
dc.date2016-06-07T13:34:10Z
dc.date2016-06-07T13:34:10Z
dc.date.accessioned2018-03-29T01:49:52Z
dc.date.available2018-03-29T01:49:52Z
dc.identifier
dc.identifierIntermontane Eolian Sand Sheet Development, Upper Tulum Valley, Central-western Argentina. Soc Brasileira Geologia, v. 45, p. 97-115 AUG-2015.
dc.identifier2317-4889
dc.identifierWOS:000363391600008
dc.identifier10.1590/2317-4889201530140
dc.identifierhttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892015000400097&lng=en&nrm=iso&tlng=en
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/243858
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1307556
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionThe intermontane Upper Tulum eolian sand sheet covers an area of ca. 125 km(2) at north of the San Juan Province, central-western Argentina. The sand sheet is currently an aggrading system where vegetation cover, surface cementation and periodic flooding withhold the development of dunes with slipfaces. The sand sheet surface is divided into three parts according to the distribution of sedimentary features, which reflects the variation in sediment budget, water table level and periodic flooding. The central sand sheet part is the main area of eolian deposition and is largely stabilized by vegetation. The sedimentary succession is 4 m thick and records the vertical interbedding of eolian and subaqueous deposits, which have been deposited for at least 3.6 ky with sedimentation rates of 86.1 cm/ky. The construction of the sand sheet is associated with deflation of the sand-graded debris sourced by San Juan alluvial fan, which is available mainly in drier fall-winter months where water table is lower and wind speeds are periodically above the threshold velocity for sand transport. The accumulation of sedimentary bodies occurs in a stabilized eolian system where vegetation cover, thin mud veneers and surface cementation are the main agents in promoting accumulation. The preservation of the sand sheet accumulations is enabled by the progressive creation of the accommodation space in a tectonically active basin and the continuous burial of geological bodies favored by high rates of sedimentation.
dc.description45
dc.description
dc.description1
dc.description97
dc.description115
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFAPESP [2007/00140-6]
dc.descriptionCNPq [142651/2008-7]
dc.description
dc.description
dc.description
dc.languageen
dc.publisherSOC BRASILEIRA GEOLOGIA
dc.publisher
dc.publisherSAO PAULO
dc.relationBRAZILIAN JOURNAL OF GEOLOGY
dc.rightsaberto
dc.sourceWOS
dc.subjectFluvial-aeolian Interactions
dc.subjectDune-field
dc.subjectInterdune Deposits
dc.subjectPadre-island
dc.subjectWind Ripples
dc.subjectBasin
dc.subjectStratification
dc.subjectAccumulation
dc.subjectSediments
dc.subjectIceland
dc.titleIntermontane Eolian Sand Sheet Development, Upper Tulum Valley, Central-western Argentina
dc.typeArtículos de revistas


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