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dc.contributor.author
Drobe, Malte
dc.contributor.author
Lopez, Monica Graciela
dc.contributor.author
Steenken, André
dc.contributor.author
Wemmer, Klaus
dc.contributor.author
Naumann, Rudolf
dc.contributor.author
Frei, Robert
dc.contributor.author
Siegesmund, Siegfried
dc.date.available
2017-07-17T16:32:55Z
dc.date.issued
2010-10
dc.identifier.citation
Drobe, Malte; Lopez, Monica Graciela; Steenken, André; Wemmer, Klaus; Naumann, Rudolf; et al.; Geodynamic evolution of the Eastern Sierras Pampeanas (Central Argentina) based on geochemical, Sm–Nd, Pb–Pb and SHRIMP data; Springer; International Journal of Earth Sciences; 100; 2-3; 10-2010; 631-657
dc.identifier.issn
1437-3254
dc.identifier.uri
http://hdl.handle.net/11336/20697
dc.description.abstract
Whole-rock geochemical analyses using major and trace elements in combination with the Sm–Nd and Pb–Pb isotope systems, together with SHRIMP age dating on metasedimentary rocks from the Sierras de Chepes, the Sierras de Córdoba, the Sierra Norte and the San Luis Formation in the Sierra de San Luis, have been carried out to unravel the provenance and the geodynamic history of the Eastern Sierras Pampeanas, Central Argentina. The geochemical and the Sm–Nd data point to a slightly stronger mafic and less-fractionated material in the provenance area of the Sierras de Córdoba when compared to the other units. The TDM model ages from the Sierras de Chepes (~1.82 Ga) and the Sierra Norte (~1.79 Ga) are significantly older than the data from the Sierras de Córdoba (1.67 Ga). The Pb data are homogeneous for the different units. Only the 208Pb/204Pb ratios of some samples from the Sierras de Córdoba are higher. A late Pampean detrital zircon peak around 520 Ma from the Sierras de Chepes is in accordance with the new data from the San Luis Formation. This is similar to the literature data from the Famatina Belt located to the northwest of the Sierras de Chepes and also fits the detrital zircon peaks in the Mesón group. These maximum depositional ages were also reported from some locations in the Puncoviscana Formation but are absent in the Sierras de Córdoba. An improved model for the development of the Eastern Sierras Pampeanas in the area between the Sierras de Córdoba and the Puncoviscana Formation is provided. This gives new insights into the late Pampean development of the Sierra de San Luis and the complex development of the Eastern Sierras Pampeanas. This new model explains the younger detrital ages in the Puncoviscana Formation compared with the older ages of the Sierras de Córdoba. Another model of the Sierra de San Luis explains the younger depositional ages of the Pringles Metamorphic Complex and the San Luis Formation when compared to the Nogolí Metamorphic Complex and the Conlara Metamorphic Complex. Additionally, the rather fast change of the high-grade metamorphic conditions in the Pringles Metamorphic Complex and the low-grade metamorphic conditions in the San Luis Formation is explained by extension, the ascent of (ultra) mafic material and later folding and erosion.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Provenance -Tectonic Setting
dc.subject
Geodynamic Evolution
dc.subject
Eastern Sierras Pampeanas
dc.subject
Gondwana Margin
dc.subject.classification
Geociencias multidisciplinaria
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Geodynamic evolution of the Eastern Sierras Pampeanas (Central Argentina) based on geochemical, Sm–Nd, Pb–Pb and SHRIMP data
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-07-13T18:30:49Z
dc.identifier.eissn
1437-3262
dc.journal.volume
100
dc.journal.number
2-3
dc.journal.pagination
631-657
dc.journal.pais
Alemania
dc.journal.ciudad
Berlin
dc.description.fil
Fil: Drobe, Malte. Georg August Universität; Alemania
dc.description.fil
Fil: Lopez, Monica Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geocronología y Geología Isotopica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geocronología y Geología Isotópica; Argentina
dc.description.fil
Fil: Steenken, André. Universität Greifswald; Alemania
dc.description.fil
Fil: Wemmer, Klaus. Georg August Universität; Alemania
dc.description.fil
Fil: Naumann, Rudolf. Deutsche GeoForschungsZentrum Potsdam; Alemania
dc.description.fil
Fil: Frei, Robert. Universidad de Copenhagen; Dinamarca
dc.description.fil
Fil: Siegesmund, Siegfried. Georg August Universität; Alemania
dc.journal.title
International Journal of Earth Sciences
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s00531-010-0593-3
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs00531-010-0593-3
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