Latest Ordovician-earliest Silurian chitinozoans from the Puna region, north-western Argentina (Western Gondwana)

Late Ordovician–early Silurian chitinozoans from the Upper Member of the Salar del Rincón Formation of northwestern Argentina are described. The study area belongs to the Central Andean Basin situated on the western Gondwana margin during the Early Palaeozoic. Chitinozoan assemblages correlate with...

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Autores principales: de la Puente, Graciela Susana, Paris, Florentin, Vaccari, Norberto Emilio
Formato: Articulo article acceptedVersion
Lenguaje:Inglés
Publicado: Czech Geological Survey 2020
Materias:
Chitinozoans
Latest Hirnantian
Earliest Rhuddanian
Argentine Puna
Ciencias de la Tierra y Medio Ambiente
Acceso en línea:https://rdi.uncoma.edu.ar/handle/uncomaid/18960
Aporte de:
Repositorio Institucional UNCo de Universidad Nacional del Comahue
id I22-R178-uncomaid-18960
record_format dspace
spelling I22-R178-uncomaid-189602025-09-03T15:59:56Z Latest Ordovician-earliest Silurian chitinozoans from the Puna region, north-western Argentina (Western Gondwana) de la Puente, Graciela Susana Paris, Florentin Vaccari, Norberto Emilio Chitinozoans Latest Hirnantian Earliest Rhuddanian Argentine Puna Ciencias de la Tierra y Medio Ambiente Late Ordovician–early Silurian chitinozoans from the Upper Member of the Salar del Rincón Formation of northwestern Argentina are described. The study area belongs to the Central Andean Basin situated on the western Gondwana margin during the Early Palaeozoic. Chitinozoan assemblages correlate with those from Northern Gondwana, where the effects of the glacial and postglacial events that occurred around the Ordovician–Silurian boundary, are quite well-documented. The recovered chitinozoan associations from the upper part of the Salar del Rincón Formation record the uppermost Ordovician–lowest Silurian deposits representing the postglacial stage of the late Hirnantian glaciation. Similar strata are usually absent in other parts of the Central Andean Basin. Tasmanites tzadiaensis is recovered for the first time outside of the northeast of Africa, supporting the northern Gondwana affinities. Associated land-derived components indicate a nearshore environment with terrestrial input. The other associated palynomorphs support the latest Hirnantian–earliest Rhuddanian postglacial stage correlation, as well. The ranges of several Late Ordovician– early Silurian Spinachitina and Cyathochitina species are discussed in terms of the Ordovician–Silurian boundary. Five new species are formally described: Spinachitina titae sp. nov., Cyathochitina brussai sp. nov., Cyathochitina lariensis sp. nov., Cyathochitina punaensis sp. nov. and Ramochitina deynouxi sp. nov. Fil: de la Puente, Graciela Susana. Universidad Nacional del Comahue. Facultad de Ciencias Agrarias; Argentina. Fil: de la Puente, Graciela Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Toxicología Ambiental y Agrobiotecnología; Argentina. Fil: de la Puente, Graciela Susana. Universidad Nacional del Comahue. Facultad de Ingeniería. Departamento de Geología y Petróleo; Argentina Fil: Paris, Florentin. Universite de Rennes I. Centre National de la Recherche Scientifique; Francia. Fil: Vaccari, Norberto Emilio. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales; Argentina. Fil: Vaccari, Norberto Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. 2020 2025-08-28T15:09:42Z 2025-08-28T15:09:42Z Articulo article acceptedVersion 1802-8225 https://rdi.uncoma.edu.ar/handle/uncomaid/18960 eng http://www.geology.cz/bulletin/contents/art1769 https://ri.conicet.gov.ar/handle/11336/127608 Atribución-NoComercial-CompartirIgual 4.0 https://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf pp. 391-418 application/pdf Czech Geological Survey Bulletin of Geosciences • Vol. 95, 4, 2020
institution Universidad Nacional del Comahue
institution_str I-22
repository_str R-178
collection Repositorio Institucional UNCo
language Inglés
topic Chitinozoans
Latest Hirnantian
Earliest Rhuddanian
Argentine Puna
Ciencias de la Tierra y Medio Ambiente
spellingShingle Chitinozoans
Latest Hirnantian
Earliest Rhuddanian
Argentine Puna
Ciencias de la Tierra y Medio Ambiente
de la Puente, Graciela Susana
Paris, Florentin
Vaccari, Norberto Emilio
Latest Ordovician-earliest Silurian chitinozoans from the Puna region, north-western Argentina (Western Gondwana)
topic_facet Chitinozoans
Latest Hirnantian
Earliest Rhuddanian
Argentine Puna
Ciencias de la Tierra y Medio Ambiente
description Late Ordovician–early Silurian chitinozoans from the Upper Member of the Salar del Rincón Formation of northwestern Argentina are described. The study area belongs to the Central Andean Basin situated on the western Gondwana margin during the Early Palaeozoic. Chitinozoan assemblages correlate with those from Northern Gondwana, where the effects of the glacial and postglacial events that occurred around the Ordovician–Silurian boundary, are quite well-documented. The recovered chitinozoan associations from the upper part of the Salar del Rincón Formation record the uppermost Ordovician–lowest Silurian deposits representing the postglacial stage of the late Hirnantian glaciation. Similar strata are usually absent in other parts of the Central Andean Basin. Tasmanites tzadiaensis is recovered for the first time outside of the northeast of Africa, supporting the northern Gondwana affinities. Associated land-derived components indicate a nearshore environment with terrestrial input. The other associated palynomorphs support the latest Hirnantian–earliest Rhuddanian postglacial stage correlation, as well. The ranges of several Late Ordovician– early Silurian Spinachitina and Cyathochitina species are discussed in terms of the Ordovician–Silurian boundary. Five new species are formally described: Spinachitina titae sp. nov., Cyathochitina brussai sp. nov., Cyathochitina lariensis sp. nov., Cyathochitina punaensis sp. nov. and Ramochitina deynouxi sp. nov.
format Articulo
article
acceptedVersion
author de la Puente, Graciela Susana
Paris, Florentin
Vaccari, Norberto Emilio
author_facet de la Puente, Graciela Susana
Paris, Florentin
Vaccari, Norberto Emilio
author_sort de la Puente, Graciela Susana
title Latest Ordovician-earliest Silurian chitinozoans from the Puna region, north-western Argentina (Western Gondwana)
title_short Latest Ordovician-earliest Silurian chitinozoans from the Puna region, north-western Argentina (Western Gondwana)
title_full Latest Ordovician-earliest Silurian chitinozoans from the Puna region, north-western Argentina (Western Gondwana)
title_fullStr Latest Ordovician-earliest Silurian chitinozoans from the Puna region, north-western Argentina (Western Gondwana)
title_full_unstemmed Latest Ordovician-earliest Silurian chitinozoans from the Puna region, north-western Argentina (Western Gondwana)
title_sort latest ordovician-earliest silurian chitinozoans from the puna region, north-western argentina (western gondwana)
publisher Czech Geological Survey
publishDate 2020
url https://rdi.uncoma.edu.ar/handle/uncomaid/18960
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AT vaccarinorbertoemilio latestordovicianearliestsilurianchitinozoansfromthepunaregionnorthwesternargentinawesterngondwana
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