Paleopalynological, lithofacial and paleoenvironmental analysis of two localities of the Palo Pintado Formation (Late Miocene), Salta, Argentina

The present work focuses on the study of the palynomorphs recovered from sedimentary samples from the Quebrada El Estanque and Río Calchaquí localities of the Palo Pintado Formation (Late Miocene) Salta, Argentina. Paleocommunities were determined, and relationships were established between lithofac...

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Autores principales: Horn, Maricel Yanina, Galli, Claudia Inés
Formato: Artículo revista
Lenguaje:Español
Publicado: Facultad de Ciencias Exactas y Naturales y Agrimensura 2025
Materias:
Palinomorfos
Paleocomunidades
Formación Palo Pintado
Cenozoico
Palynomorphs
Paleocommunities
Palo Pintado Formation
Cenozoic
Acceso en línea:https://revistas.unne.edu.ar/index.php/fce/article/view/8179
Aporte de:
Revistas UNNE - Universidad Nacional del Noroeste (UNNE) de Universidad Nacional del Nordeste
id I48-R154-article-8179
record_format ojs
institution Universidad Nacional del Nordeste
institution_str I-48
repository_str R-154
container_title_str Revistas UNNE - Universidad Nacional del Noroeste (UNNE)
language Español
format Artículo revista
topic Palinomorfos
Paleocomunidades
Formación Palo Pintado
Cenozoico
Palynomorphs
Paleocommunities
Palo Pintado Formation
Cenozoic
spellingShingle Palinomorfos
Paleocomunidades
Formación Palo Pintado
Cenozoico
Palynomorphs
Paleocommunities
Palo Pintado Formation
Cenozoic
Horn, Maricel Yanina
Galli, Claudia Inés
Paleopalynological, lithofacial and paleoenvironmental analysis of two localities of the Palo Pintado Formation (Late Miocene), Salta, Argentina
topic_facet Palinomorfos
Paleocomunidades
Formación Palo Pintado
Cenozoico
Palynomorphs
Paleocommunities
Palo Pintado Formation
Cenozoic
author Horn, Maricel Yanina
Galli, Claudia Inés
author_facet Horn, Maricel Yanina
Galli, Claudia Inés
author_sort Horn, Maricel Yanina
title Paleopalynological, lithofacial and paleoenvironmental analysis of two localities of the Palo Pintado Formation (Late Miocene), Salta, Argentina
title_short Paleopalynological, lithofacial and paleoenvironmental analysis of two localities of the Palo Pintado Formation (Late Miocene), Salta, Argentina
title_full Paleopalynological, lithofacial and paleoenvironmental analysis of two localities of the Palo Pintado Formation (Late Miocene), Salta, Argentina
title_fullStr Paleopalynological, lithofacial and paleoenvironmental analysis of two localities of the Palo Pintado Formation (Late Miocene), Salta, Argentina
title_full_unstemmed Paleopalynological, lithofacial and paleoenvironmental analysis of two localities of the Palo Pintado Formation (Late Miocene), Salta, Argentina
title_sort paleopalynological, lithofacial and paleoenvironmental analysis of two localities of the palo pintado formation (late miocene), salta, argentina
description The present work focuses on the study of the palynomorphs recovered from sedimentary samples from the Quebrada El Estanque and Río Calchaquí localities of the Palo Pintado Formation (Late Miocene) Salta, Argentina. Paleocommunities were determined, and relationships were established between lithofacies and depositional paleoenvironments. The Palo Pintado Formation is composed of sandstones and mudstone, while conglomerates are subordinate. The deposits show an arrangement in cycles that have been interpreted as river systems of low hierarchy and low mobility. Twenty-six species of palynomorphs were found in the Quebrada El Estanque, which would have been part of the aquatic, marsh, xerophilous and high-altitude forest paleocommunities. On the other hand, in Río Calchaquí, ten species of palynomorphs were found that would have integrated the paleocommunities of hygrophilous, xerophilous and high-altitude forest. In Quebrada El Estanque the sedimentation environment would correspond to floodplains in which lagoons could have formed due to river overflows. The marsh subenvironment would have taken place on the shores and the herbaceous marsh vegetation would have been in the coastal area, while the xerophilous species would have been found in more distant areas. In the Río Calchaquí, the sediments correspond to channel or intrachannel accumulations with little development of floodplains. Hygrophilous vegetation would have developed in the vicinity of river edges while xerophilous vegetation in open environments. The climate would have been warm, humid with dry seasonality.
publisher Facultad de Ciencias Exactas y Naturales y Agrimensura
publishDate 2025
url https://revistas.unne.edu.ar/index.php/fce/article/view/8179
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AT hornmaricelyanina analisispaleopalinologicolitofacialypaleoambientaldedoslocalidadesdelaformacionpalopintadomiocenotardiosaltaargentina
AT galliclaudiaines analisispaleopalinologicolitofacialypaleoambientaldedoslocalidadesdelaformacionpalopintadomiocenotardiosaltaargentina
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spelling I48-R154-article-81792025-12-19T20:11:49Z Paleopalynological, lithofacial and paleoenvironmental analysis of two localities of the Palo Pintado Formation (Late Miocene), Salta, Argentina Análisis paleopalinológico, litofacial y paleoambiental de dos localidades de la Formación Palo Pintado (Mioceno Tardío), Salta, Argentina Horn, Maricel Yanina Galli, Claudia Inés Palinomorfos Paleocomunidades Formación Palo Pintado Cenozoico Palynomorphs Paleocommunities Palo Pintado Formation Cenozoic The present work focuses on the study of the palynomorphs recovered from sedimentary samples from the Quebrada El Estanque and Río Calchaquí localities of the Palo Pintado Formation (Late Miocene) Salta, Argentina. Paleocommunities were determined, and relationships were established between lithofacies and depositional paleoenvironments. The Palo Pintado Formation is composed of sandstones and mudstone, while conglomerates are subordinate. The deposits show an arrangement in cycles that have been interpreted as river systems of low hierarchy and low mobility. Twenty-six species of palynomorphs were found in the Quebrada El Estanque, which would have been part of the aquatic, marsh, xerophilous and high-altitude forest paleocommunities. On the other hand, in Río Calchaquí, ten species of palynomorphs were found that would have integrated the paleocommunities of hygrophilous, xerophilous and high-altitude forest. In Quebrada El Estanque the sedimentation environment would correspond to floodplains in which lagoons could have formed due to river overflows. The marsh subenvironment would have taken place on the shores and the herbaceous marsh vegetation would have been in the coastal area, while the xerophilous species would have been found in more distant areas. In the Río Calchaquí, the sediments correspond to channel or intrachannel accumulations with little development of floodplains. Hygrophilous vegetation would have developed in the vicinity of river edges while xerophilous vegetation in open environments. The climate would have been warm, humid with dry seasonality. El presente trabajo se enfoca en el estudio de los palinomorfos recuperados de muestras sedimentarias de las localidades Quebrada El Estanque y Río Calchaquí de la Formación Palo Pintado (Mioceno Tardío) Salta, Argentina. Se determinaron paleocomunidades, y establecieron relaciones entre litofacies y paleoambientes de depósito. La Formación Palo Pintado está constituída por areniscas y pelitas, mientras que los conglomerados están subordinados. El conjunto muestra una disposición en ciclos que han sido interpretados como sistemas fluviales de baja jerarquía y baja movilidad. En la Quebrada El Estanque se hallaron veintiséis especies de palinomorfos, que habrían integrado las paleocomunidades acuática, palustre, xerófila y boscosa de altura. En cambio, en Río Calchaquí, se hallaron diez especies de palinomorfos que habrían conformado las paleocomunidades bosque higrófilo, xerófila y boscosa de altura. En Quebrada El Estanque el ambiente de sedimentación correspondería a llanuras inundables en las que podrían haberse formado lagunas por desbordes de los ríos. En las orillas habría tenido lugar el subambiente palustre y en la zona litoral se habría localizado la vegetación palustre herbácea, mientras que las especies xerófilas se habrían encontrado en zonas más alejadas. En Río Calchaquí, los sedimentos corresponden a acumulaciones de canal o intracanal con escaso desarrollo de llanuras inundables. La vegetación higrófila se habría desarrollado en las cercanías de los ríos, en tanto la vegetación xerófila en ambientes abiertos. El clima habría sido cálido húmedo con estacionalidad seca. Facultad de Ciencias Exactas y Naturales y Agrimensura 2025-12-19 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/html https://revistas.unne.edu.ar/index.php/fce/article/view/8179 10.30972/fac.3528179 FACENA; Vol. 35 Núm. 2 (2025); 120-148 1851-507X 0325-4216 spa https://revistas.unne.edu.ar/index.php/fce/article/view/8179/8614 https://revistas.unne.edu.ar/index.php/fce/article/view/8179/8615 Derechos de autor 2025 Maricel Yanina Horn, Claudia Inés Galli http://creativecommons.org/licenses/by-nc/4.0

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