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dc.contributor.author Spagnuolo, Cecilia Mariel
dc.contributor.author Georgieff, Sergio Miguel
dc.contributor.author Rapalini, Augusto Ernesto
dc.date.available 2017-02-07T18:41:46Z
dc.date.issued 2015-11
dc.identifier.citation Spagnuolo, Cecilia Mariel; Georgieff, Sergio Miguel; Rapalini, Augusto Ernesto; Magnetostratigraphy of the Miocene Las Arcas Formation, Santa María Valley, northwestern Argentina; Elsevier; Journal Of South American Earth Sciences; 63; 11-2015; 101–113
dc.identifier.issn 0895-9811
dc.identifier.uri http://hdl.handle.net/11336/12670
dc.description.abstract The first magnetostratigraphic study of the Las Arcas Formation (Late Miocene) was carried out in Las Totoritas creek (26º12′S; 65º47′W, NW Argentina), a key place in between of two geological provinces: Northwestern Pampean Ranges and Eastern Cordillera, in northwestern Argentina. This was accompanied by isotopic dating (9.01 ± 0.12 Ma, 40Ar–39Ar in amphibole) of the unit, obtained from a 3.4 m thick tuff intercalated at ∼45 m above the base. The Las Arcas Formation is 810 m thick at the sampling locality and it is mainly composed of tabular reddish conglomerates, sandstones and siltstones in both coarsening- and thickening-upward arrangements. The exposed section was sampled at 48 sites, 26 of which are interpreted as carrying primary magnetization. The new magnetostratigraphic column was correlated with the Geomagnetic Polarity Time Scale (GPTS), and suggests that deposition of the Las Arcas Formation strata started at around 9.1 Ma and ended around 6.8 Ma. The paleomagnetic pole obtained for this unit (Dec = 8.7° Inc = −43.9° dp = 14.9 dm 9.3) indicates that this area underwent non-significant rotation (11.0° ± 13.6°) since the Late Miocene.
dc.format application/pdf
dc.language.iso eng
dc.publisher Elsevier
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject MAGNETOSTRATIGRAPHY
dc.subject PALEOMAGNETISM
dc.subject MIOCENE
dc.subject NORTHWESTERN ARGENTINA
dc.subject.classification Geociencias multidisciplinaria
dc.subject.classification Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification CIENCIAS NATURALES Y EXACTAS
dc.title Magnetostratigraphy of the Miocene Las Arcas Formation, Santa María Valley, northwestern 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 2017-02-07T17:51:25Z
dc.journal.volume 63
dc.journal.pagination 101–113
dc.journal.pais Países Bajos
dc.journal.ciudad Amsterdam
dc.description.fil Fil: Spagnuolo, Cecilia Mariel. Fundacion Miguel Lillo. Direccion de Geologia. Instituto Sedimentologia; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil Fil: Georgieff, Sergio Miguel. Fundacion Miguel Lillo. Direccion de Geologia. Instituto Sedimentologia; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil Fil: Rapalini, Augusto Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina
dc.journal.title Journal Of South American Earth Sciences
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.jsames.2015.07.004
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0895981115300201


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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Atribución-NoComercial-SinDerivadas 2.5 Argentina (CC BY-NC-ND 2.5 AR)