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dc.contributor.author
García, Victoria Josefina
dc.contributor.author
Rubinstein, Claudia Viviana
dc.date.available
2018-09-13T15:54:57Z
dc.date.issued
2015-02
dc.identifier.citation
García, Victoria Josefina; Rubinstein, Claudia Viviana; New biostratigraphic proposal for the lower palaeozoic tucunuco group (San Juan precordillera, Argentina) based on marine and terrestrial palynomorphs; Asociacion Paleontologica Argentina; Ameghiniana; 52; 2; 2-2015; 265-285
dc.identifier.issn
1851-8044
dc.identifier.uri
http://hdl.handle.net/11336/59512
dc.description.abstract
This is an exhaustive analysis of the palynomorph assemblages, organic-walled marine phytoplankton and miospores from the Tucunuco Group. This group includes the La Chilca and Los Espejos formations and is exposed in the Central Precordillera of San Juan. Four localities were included in this study, i.e., Río Jáchal, Río de las Chacritas, Cerro La Chilca and Quebrada Ancha. Previous data concerning several fossil groups, such as graptolites, conodonts and brachiopods, suggest a mainly Llandovery-Wenlock? age for the La Chilca Formation and a Wenlock to locally Lochkovian age for the Los Espejos Formation. Marine palynomorphs are predominant in the two formations in all the studied sections. Although terrestrial palynomorphs are the minor component, trilete spores are abundant, diverse and biostatigraphically relevant in the Los Espejos Formation. Correlations using marine palynomorph assemblages and miospore biozones recognized worldwide allow constraining the age of the two stratigraphic units. Based on marine phytoplankton, the middle-upper part of the La Chilca Formation is assigned to the Wenlock. In the Los Espejos Formation, palynomorph assemblages allow the recognition, from the base to the top, of the Wenlock with doubts, the Ludlow, and the Pridolí. The Lochkovian has been documented exclusively in the northern part of the basin. This confirms the presence of the Silurian/Devonian boundary in the upper part of the Los Espejos Formation. A north-south correlation panel of the studied sections is presented.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Asociacion Paleontologica Argentina
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Argentinian Precordillera
dc.subject
Biostratigraphy
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Devonian
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Miospores
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Organic-Walled Phytoplankton
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Silurian
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Tucunuco Group
dc.subject.classification
Meteorología y Ciencias Atmosféricas
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
New biostratigraphic proposal for the lower palaeozoic tucunuco group (San Juan precordillera, Argentina) based on marine and terrestrial palynomorphs
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-08-28T19:04:45Z
dc.journal.volume
52
dc.journal.number
2
dc.journal.pagination
265-285
dc.journal.pais
Argentina
dc.journal.ciudad
Buenos Aires
dc.description.fil
Fil: García, Victoria Josefina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
dc.description.fil
Fil: Rubinstein, Claudia Viviana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
dc.journal.title
Ameghiniana
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.5710/AMGH.14.12.2014.2813
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.bioone.org/doi/10.5710/AMGH.14.12.2014.2813
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