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dc.contributor.author
Rahl, Jeffrey
dc.contributor.author
Harbor, David
dc.contributor.author
Galli, Claudia Inés
dc.contributor.author
O'Sullivan, Paul
dc.date.available
2019-11-29T21:09:53Z
dc.date.issued
2018-11
dc.identifier.citation
Rahl, Jeffrey; Harbor, David; Galli, Claudia Inés; O'Sullivan, Paul; Foreland Basin Record of Uplift and Exhumation of the Eastern Cordillera, Northwest Argentina; American Geophysical Union; Tectonics; 37; 11; 11-2018; 4173-4193
dc.identifier.issn
0278-7407
dc.identifier.uri
http://hdl.handle.net/11336/91041
dc.description.abstract
The style, tempo, and timing of orogenic plateaus such as the Altiplano-Puna in South America are actively debated. Foreland basin strata in northwestern Argentina preserve a record of the eastward propagation, uplift, and erosion of the eastern margin of the high topography of the Puna plateau and Eastern Cordillera. Herein, we present new sedimentologic and geochronologic data from the Neogene foreland basin strata and modern fluvial sediments at 23°S to reveal the timing of growth and erosion of the modern plateau margin. Traditional sedimentologic approaches, including conglomeratic clast counts and sandstone point-counts, combined with detrital zircon U-Pb age distributions preserve robust signatures that track changes in sediment provenance over the past 12 Ma. Growth of the modern plateau edge commenced between 12 and 7 Ma and erected a topographic barrier that cut off the supply of sediment from more westerly sources. Erosion of this rising block has progressively dissected a cover of early Paleozoic sediments of the Mesón and Santa Victoria Groups, leading to deep incision into the pre-Cambrian metasediments of the Puncoviscana Formation that continues today. Detrital apatite and zircon fission track data from the both the Neogene strata and modern streams document erosion of the frontal block at a rate of about 0.6 mm/a.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Geophysical Union
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
DETRITAL THERMOCHRONOLOGY
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EASTERN CORDILLERA
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FORELAND BASIN
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NEOGENE
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PLATEAU MARGIN
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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
Foreland Basin Record of Uplift and Exhumation of the Eastern Cordillera, Northwest Argentina
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-10-17T16:30:30Z
dc.journal.volume
37
dc.journal.number
11
dc.journal.pagination
4173-4193
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Washington DC
dc.description.fil
Fil: Rahl, Jeffrey. Washington and Lee University; Estados Unidos
dc.description.fil
Fil: Harbor, David. Washington and Lee University; Estados Unidos
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Fil: Galli, Claudia Inés. Universidad Nacional de Jujuy. Instituto de Ecorregiones Andinas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Ecorregiones Andinas; Argentina
dc.description.fil
Fil: O'Sullivan, Paul. GeoSep Services; Estados Unidos
dc.journal.title
Tectonics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2017TC004955
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1029/2017TC004955
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