Palaeoenvironmental reconstruction based on charophytes andsedimentology: Can the mid-Holocene Optimum be recognised inwestern Argentina?

Autores
Font, Eimi Ailen; Chiesa, Jorge O.
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We sought to recognise to which extent the mid-Holocene Optimum can be identified in the Río Jarilla region of western Argentina, situated at the boundaries of the South American Arid Diagonal. The palaeoenvironmental conditions of the Arco del Desaguadero Formation, formed by a sedimentary sequence of late Pleistocene to middle Holocene age, were reconstructed based on charophyte assemblages and sedimentology. Three fluvio-lacustrine cycles were recognised with evaporitic layers at the top of each, reflecting the high temperatures that characterise the Holocene. For the second cycle, three 14C dates were obtained, ranging from ca. 11 to 7 ka BP which, together with sedimentology and the palaeontological record allowed us to infer a warm and semiarid period assigned to the mid-Holocene Climatic Optimum. The gyrogonites found in the sediments belong to Chara cf. contraria, Chara cf. papillosa, Chara halina and Chara hornemannii, species related to extant species from Argentina. The presence of C. hornemannii imbedded in sedimentary rocks (evaporites) reflects higher temperatures in the past, although further research is needed to establish the significance of this species for reconstructing Quaternary climate.
Fil: Font, Eimi Ailen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis; Argentina
Fil: Chiesa, Jorge O.. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Departamento de Geologia; Argentina
Materia
Charophytes
Charales
Sedimentology
Paleoecology
Desaguadero Basin
Argentina
Holocene
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/6993
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/6993
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Palaeoenvironmental reconstruction based on charophytes andsedimentology: Can the mid-Holocene Optimum be recognised inwestern Argentina?Font, Eimi AilenChiesa, Jorge O.CharophytesCharalesSedimentologyPaleoecologyDesaguadero BasinArgentinaHolocenehttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1We sought to recognise to which extent the mid-Holocene Optimum can be identified in the Río Jarilla region of western Argentina, situated at the boundaries of the South American Arid Diagonal. The palaeoenvironmental conditions of the Arco del Desaguadero Formation, formed by a sedimentary sequence of late Pleistocene to middle Holocene age, were reconstructed based on charophyte assemblages and sedimentology. Three fluvio-lacustrine cycles were recognised with evaporitic layers at the top of each, reflecting the high temperatures that characterise the Holocene. For the second cycle, three 14C dates were obtained, ranging from ca. 11 to 7 ka BP which, together with sedimentology and the palaeontological record allowed us to infer a warm and semiarid period assigned to the mid-Holocene Climatic Optimum. The gyrogonites found in the sediments belong to Chara cf. contraria, Chara cf. papillosa, Chara halina and Chara hornemannii, species related to extant species from Argentina. The presence of C. hornemannii imbedded in sedimentary rocks (evaporites) reflects higher temperatures in the past, although further research is needed to establish the significance of this species for reconstructing Quaternary climate.Fil: Font, Eimi Ailen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis; ArgentinaFil: Chiesa, Jorge O.. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Departamento de Geologia; ArgentinaElsevier Science2014-09-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/6993Font, Eimi Ailen; Chiesa, Jorge O.; Palaeoenvironmental reconstruction based on charophytes andsedimentology: Can the mid-Holocene Optimum be recognised inwestern Argentina?; Elsevier Science; Aquatic Botany; 120; Part A; 6-9-2014; 31-380304-3770enginfo:eu-repo/semantics/altIdentifier/doi/info:eu-repo/semantics/altIdentifier/doi/10.1016/j.aquabot.2014.08.006info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0304377014001181info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:04:38Zoai:ri.conicet.gov.ar:11336/6993instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:04:38.84CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Palaeoenvironmental reconstruction based on charophytes andsedimentology: Can the mid-Holocene Optimum be recognised inwestern Argentina?
title Palaeoenvironmental reconstruction based on charophytes andsedimentology: Can the mid-Holocene Optimum be recognised inwestern Argentina?
spellingShingle Palaeoenvironmental reconstruction based on charophytes andsedimentology: Can the mid-Holocene Optimum be recognised inwestern Argentina?
Font, Eimi Ailen
Charophytes
Charales
Sedimentology
Paleoecology
Desaguadero Basin
Argentina
Holocene
title_short Palaeoenvironmental reconstruction based on charophytes andsedimentology: Can the mid-Holocene Optimum be recognised inwestern Argentina?
title_full Palaeoenvironmental reconstruction based on charophytes andsedimentology: Can the mid-Holocene Optimum be recognised inwestern Argentina?
title_fullStr Palaeoenvironmental reconstruction based on charophytes andsedimentology: Can the mid-Holocene Optimum be recognised inwestern Argentina?
title_full_unstemmed Palaeoenvironmental reconstruction based on charophytes andsedimentology: Can the mid-Holocene Optimum be recognised inwestern Argentina?
title_sort Palaeoenvironmental reconstruction based on charophytes andsedimentology: Can the mid-Holocene Optimum be recognised inwestern Argentina?
dc.creator.none.fl_str_mv Font, Eimi Ailen
Chiesa, Jorge O.
author Font, Eimi Ailen
author_facet Font, Eimi Ailen
Chiesa, Jorge O.
author_role author
author2 Chiesa, Jorge O.
author2_role author
dc.subject.none.fl_str_mv Charophytes
Charales
Sedimentology
Paleoecology
Desaguadero Basin
Argentina
Holocene
topic Charophytes
Charales
Sedimentology
Paleoecology
Desaguadero Basin
Argentina
Holocene
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We sought to recognise to which extent the mid-Holocene Optimum can be identified in the Río Jarilla region of western Argentina, situated at the boundaries of the South American Arid Diagonal. The palaeoenvironmental conditions of the Arco del Desaguadero Formation, formed by a sedimentary sequence of late Pleistocene to middle Holocene age, were reconstructed based on charophyte assemblages and sedimentology. Three fluvio-lacustrine cycles were recognised with evaporitic layers at the top of each, reflecting the high temperatures that characterise the Holocene. For the second cycle, three 14C dates were obtained, ranging from ca. 11 to 7 ka BP which, together with sedimentology and the palaeontological record allowed us to infer a warm and semiarid period assigned to the mid-Holocene Climatic Optimum. The gyrogonites found in the sediments belong to Chara cf. contraria, Chara cf. papillosa, Chara halina and Chara hornemannii, species related to extant species from Argentina. The presence of C. hornemannii imbedded in sedimentary rocks (evaporites) reflects higher temperatures in the past, although further research is needed to establish the significance of this species for reconstructing Quaternary climate.
Fil: Font, Eimi Ailen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis; Argentina
Fil: Chiesa, Jorge O.. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Departamento de Geologia; Argentina
description We sought to recognise to which extent the mid-Holocene Optimum can be identified in the Río Jarilla region of western Argentina, situated at the boundaries of the South American Arid Diagonal. The palaeoenvironmental conditions of the Arco del Desaguadero Formation, formed by a sedimentary sequence of late Pleistocene to middle Holocene age, were reconstructed based on charophyte assemblages and sedimentology. Three fluvio-lacustrine cycles were recognised with evaporitic layers at the top of each, reflecting the high temperatures that characterise the Holocene. For the second cycle, three 14C dates were obtained, ranging from ca. 11 to 7 ka BP which, together with sedimentology and the palaeontological record allowed us to infer a warm and semiarid period assigned to the mid-Holocene Climatic Optimum. The gyrogonites found in the sediments belong to Chara cf. contraria, Chara cf. papillosa, Chara halina and Chara hornemannii, species related to extant species from Argentina. The presence of C. hornemannii imbedded in sedimentary rocks (evaporites) reflects higher temperatures in the past, although further research is needed to establish the significance of this species for reconstructing Quaternary climate.
publishDate 2014
dc.date.none.fl_str_mv 2014-09-06
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/6993
Font, Eimi Ailen; Chiesa, Jorge O.; Palaeoenvironmental reconstruction based on charophytes andsedimentology: Can the mid-Holocene Optimum be recognised inwestern Argentina?; Elsevier Science; Aquatic Botany; 120; Part A; 6-9-2014; 31-38
0304-3770
url http://hdl.handle.net/11336/6993
identifier_str_mv Font, Eimi Ailen; Chiesa, Jorge O.; Palaeoenvironmental reconstruction based on charophytes andsedimentology: Can the mid-Holocene Optimum be recognised inwestern Argentina?; Elsevier Science; Aquatic Botany; 120; Part A; 6-9-2014; 31-38
0304-3770
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.aquabot.2014.08.006
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0304377014001181
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1842269867657396224
score 13.13397

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