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dc.contributor.author
Hongn, Fernando Daniel
dc.contributor.author
del Papa, Cecilia Eugenia
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Powell, Jaime Eduardo
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Petrinovic, Ivan Alejandro
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Mon, Ricardo
dc.contributor.author
Deraco, Maria Virginia
dc.date.available
2018-08-16T15:20:14Z
dc.date.issued
2007-03
dc.identifier.citation
Hongn, Fernando Daniel; del Papa, Cecilia Eugenia; Powell, Jaime Eduardo; Petrinovic, Ivan Alejandro; Mon, Ricardo; et al.; Middle Eocene deformation and sedimentation in the Puna- Eastern Cordillera transition (23°-26°S): Control by preexisting heterogeneities on the pattern of initial Andean shortening; Geological Society of America; Geology; 35; 3; 3-2007; 271-274
dc.identifier.issn
0091-7613
dc.identifier.uri
http://hdl.handle.net/11336/55884
dc.description.abstract
The Quebrada de los Colorados Formation, at the north end of Calchaquí Valley in Salta Province, northwest Argentina, preserves evidence of syndepositional deformation since the middle Eocene (ca. 40 Ma) that includes (1) an angular unconformity with the underlying Salta Group (Paleogene), and (2) internal unconformities and changes in vertical facies succession and provenance. Its fossil record [mammalian (notoungulates), middle Eocene] is correlatable to the Casa Grande Formation, which also unconformably overlies the Salta Group; both units record middle Eocene deformation along the eastern border of the Puna Plateau and outline previous first-order mechanical heterogeneities related to the Cretaceous rift basin border. Along the western margin of the Puna, Eocene deformation coincides with thermal (magmatic arc) and mechanical (basin inversion) heterogeneities. Thus, the distribution of Eocene deformation followed an irregular pattern as a consequence of the heritage of preexisting heterogeneities.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Geological Society of America
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Central Andes
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Eocene Deformation
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Initial Foreland
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Preexisting Heterogeneities
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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
Middle Eocene deformation and sedimentation in the Puna- Eastern Cordillera transition (23°-26°S): Control by preexisting heterogeneities on the pattern of initial Andean shortening
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-08-13T18:17:02Z
dc.journal.volume
35
dc.journal.number
3
dc.journal.pagination
271-274
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Boulder
dc.description.fil
Fil: Hongn, Fernando Daniel. Universidad Nacional de Salta; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: del Papa, Cecilia Eugenia. Universidad Nacional de Salta; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Powell, Jaime Eduardo. Universidad Nacional de Tucumán; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Petrinovic, Ivan Alejandro. Universidad Nacional de Salta; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Mon, Ricardo. Universidad Nacional de Tucumán; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Deraco, Maria Virginia. Universidad Nacional de Tucumán; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
Geology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1130/G23189A.1
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://pubs.geoscienceworld.org/gsa/geology/article/35/3/271-274/129819
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