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dc.contributor.author
Zacarias, Iracema Anahi
dc.contributor.author
Monferran, Mateo Daniel
dc.contributor.author
Martínez, Sergio
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Gallego, Oscar F.
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Cabaleri, Nora Graciela
dc.contributor.author
Armella, Claudia
dc.contributor.author
Silva Nieto, Diego
dc.date.available
2021-05-31T18:45:32Z
dc.date.issued
2019-01
dc.identifier.citation
Zacarias, Iracema Anahi; Monferran, Mateo Daniel; Martínez, Sergio; Gallego, Oscar F.; Cabaleri, Nora Graciela; et al.; Taphonomic analysis of an autochthonous fossil concentration in Jurassic lacustrine deposits of Patagonia, Argentina; Elsevier Science; Palaeogeography, Palaeoclimatology, Palaeoecology; 514; 1-2019; 265-281
dc.identifier.issn
0031-0182
dc.identifier.uri
http://hdl.handle.net/11336/132855
dc.description.abstract
A new fossiliferous level from the Las Chacritas Member (Bajocian-Callovian) of the Cañadón Asfalto Formation, which crops out in the Cañadón Asfalto Basin (Extraandean-Chubut) Argentina was analyzed. The study of this assemblage was made on the basis of paleoecological, sedimentological and taphonomic criteria. This polytypic assemblage is composed mainly of bivalves, spinicaudatans, gastropods, and ostracods, associated with plant remains (such as Brachyphyllum sp., Charophytes, conifers, seeds, and indeterminate remains). The tabular bed of oncolitic packstone facies corresponds to a shallow marginal lacustrine environment of intense organic productivity. Taphonomic and paleoecological features, such as closed articulated valves, random orientation, and size-frequency histograms indicate that the fauna is autochthonous. The short life cycle with a quick turnover of the population, suggests that the time averaging would only comprise a few years. In addition, the analysis of Energy dispersive X-ray spectrometry supports early diagenesis affecting the remains and favoring the dissolution of aragonite/calcite, as well as the silicification of shells. Therefore, this fossil assemblage can be classified as a sedimentological concentration, which could have been originated by seasonal cyclicity in an environment subject to water level fluctuations.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ARGENTINA
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CAÑADÓN ASFALTO FORMATION
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FOSSIL CONCENTRATION
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MARGINAL LACUSTRINE FACIES
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MIDDLE JURASSIC
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TAPHONOMY
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Paleontología
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Taphonomic analysis of an autochthonous fossil concentration in Jurassic lacustrine deposits of Patagonia, 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
2020-11-16T20:05:37Z
dc.journal.volume
514
dc.journal.pagination
265-281
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Zacarias, Iracema Anahi. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; Argentina
dc.description.fil
Fil: Monferran, Mateo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; Argentina
dc.description.fil
Fil: Martínez, Sergio. Universidad de la República; Uruguay
dc.description.fil
Fil: Gallego, Oscar F.. Universidad de la Republica; Uruguay
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Fil: Cabaleri, Nora Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geocronología y Geología Isotópica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geocronología y Geología Isotópica; Argentina
dc.description.fil
Fil: Armella, Claudia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geocronología y Geología Isotópica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geocronología y Geología Isotópica; Argentina
dc.description.fil
Fil: Silva Nieto, Diego. Secretaria de Industria y Mineria. Servicio Geológico Minero Argentino. Instituto de Geología y Recursos Minerales; Argentina
dc.journal.title
Palaeogeography, Palaeoclimatology, Palaeoecology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0031018218301226
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.palaeo.2018.10.020
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