The Cretaceous flora of the Neuquén Basin, its paleoenvironmental and paleoclimatic significance

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The paleoenvironmental and paleoclimatic significance of Cretaceous flora in the Neuquén Basin is summarized. Berriasian-Barremian terrestrial palynological assemblages are dominated by Araucariaceae and Cheirolepidiaceae, with subordinated podopcarps, ferns, lycopsids and bryophytes that progressed...

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Autor principal:	Ottone, E.G.
Formato:	Artículo publishedVersion
Lenguaje:	Inglés
Publicado:	2009
Materias:	Fossil plants Northern patagonia Palynomorphs angiosperm Cretaceous dinoflagellate flora fossil assemblage paleoclimate paleoenvironment palynology palynomorph transgression Argentina Neuquen Basin Patagonia Afropollis Araucariaceae bryophytes Characeae Cheirolepidiaceae Cycadopsida Dinophyceae Filicophyta Ginkgoales Hydropteridales Lycopodiopsida Magnoliophyta Nothofagaceae Podocarpaceae
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_00044822_v65_n2_p373_Ottone
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

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spelling	paperaa:paper_00044822_v65_n2_p373_Ottone2023-06-12T16:40:24Z The Cretaceous flora of the Neuquén Basin, its paleoenvironmental and paleoclimatic significance Rev. Asoc. Geol. Argent. 2009;65(2):373-386 Ottone, E.G. Fossil plants Northern patagonia Palynomorphs angiosperm Cretaceous dinoflagellate flora fossil assemblage paleoclimate paleoenvironment palynology palynomorph transgression Argentina Neuquen Basin Patagonia Afropollis Araucariaceae bryophytes Characeae Cheirolepidiaceae Cycadopsida Dinophyceae Filicophyta Ginkgoales Hydropteridales Lycopodiopsida Magnoliophyta Nothofagaceae Podocarpaceae The paleoenvironmental and paleoclimatic significance of Cretaceous flora in the Neuquén Basin is summarized. Berriasian-Barremian terrestrial palynological assemblages are dominated by Araucariaceae and Cheirolepidiaceae, with subordinated podopcarps, ferns, lycopsids and bryophytes that progressed in a mild and humid climate. Tithonian-Barremian dinoflagellates mostly possess Mediterranean affinities. Upper Barremian evaporitic strata represent the final cycle of marine deposition related to the Pacific ocean in the basin. In the Aptian appear the first angiosperm pollen grains. Aptian-Cenomanian terrestrial palynological assemblages are characterized by the presence of northern Gondwana forms such as Afropollis and elaterate pollen grains. Tempskyaceae and Ginkgoales are also present in the late Early Cretaceous. Turonian-lower Campanian continental strata mostly include petrified wood and charophytes. Upper Campanian-Maastrichtian strata yield a rich terrestrial palynological assemblage composed by Nothofagaceae, Podocarpaceae, Cheirolepidiaceae, Araucariaceae, Salviniales and angiosperms, but also dinoflagellates that reflect the beginning of a marine transgression related to the Atlantic ocean. The presence of locally abundant cycads and palms suggests a warm and relatively humid climate towards the end of the Cretaceous. Fil:Ottone, E.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2009 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion application/pdf eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00044822_v65_n2_p373_Ottone
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language	Inglés
orig_language_str_mv	eng
topic	Fossil plants Northern patagonia Palynomorphs angiosperm Cretaceous dinoflagellate flora fossil assemblage paleoclimate paleoenvironment palynology palynomorph transgression Argentina Neuquen Basin Patagonia Afropollis Araucariaceae bryophytes Characeae Cheirolepidiaceae Cycadopsida Dinophyceae Filicophyta Ginkgoales Hydropteridales Lycopodiopsida Magnoliophyta Nothofagaceae Podocarpaceae
spellingShingle	Fossil plants Northern patagonia Palynomorphs angiosperm Cretaceous dinoflagellate flora fossil assemblage paleoclimate paleoenvironment palynology palynomorph transgression Argentina Neuquen Basin Patagonia Afropollis Araucariaceae bryophytes Characeae Cheirolepidiaceae Cycadopsida Dinophyceae Filicophyta Ginkgoales Hydropteridales Lycopodiopsida Magnoliophyta Nothofagaceae Podocarpaceae Ottone, E.G. The Cretaceous flora of the Neuquén Basin, its paleoenvironmental and paleoclimatic significance
topic_facet	Fossil plants Northern patagonia Palynomorphs angiosperm Cretaceous dinoflagellate flora fossil assemblage paleoclimate paleoenvironment palynology palynomorph transgression Argentina Neuquen Basin Patagonia Afropollis Araucariaceae bryophytes Characeae Cheirolepidiaceae Cycadopsida Dinophyceae Filicophyta Ginkgoales Hydropteridales Lycopodiopsida Magnoliophyta Nothofagaceae Podocarpaceae
description	The paleoenvironmental and paleoclimatic significance of Cretaceous flora in the Neuquén Basin is summarized. Berriasian-Barremian terrestrial palynological assemblages are dominated by Araucariaceae and Cheirolepidiaceae, with subordinated podopcarps, ferns, lycopsids and bryophytes that progressed in a mild and humid climate. Tithonian-Barremian dinoflagellates mostly possess Mediterranean affinities. Upper Barremian evaporitic strata represent the final cycle of marine deposition related to the Pacific ocean in the basin. In the Aptian appear the first angiosperm pollen grains. Aptian-Cenomanian terrestrial palynological assemblages are characterized by the presence of northern Gondwana forms such as Afropollis and elaterate pollen grains. Tempskyaceae and Ginkgoales are also present in the late Early Cretaceous. Turonian-lower Campanian continental strata mostly include petrified wood and charophytes. Upper Campanian-Maastrichtian strata yield a rich terrestrial palynological assemblage composed by Nothofagaceae, Podocarpaceae, Cheirolepidiaceae, Araucariaceae, Salviniales and angiosperms, but also dinoflagellates that reflect the beginning of a marine transgression related to the Atlantic ocean. The presence of locally abundant cycads and palms suggests a warm and relatively humid climate towards the end of the Cretaceous.
format	Artículo Artículo publishedVersion
author	Ottone, E.G.
author_facet	Ottone, E.G.
author_sort	Ottone, E.G.
title	The Cretaceous flora of the Neuquén Basin, its paleoenvironmental and paleoclimatic significance
title_short	The Cretaceous flora of the Neuquén Basin, its paleoenvironmental and paleoclimatic significance
title_full	The Cretaceous flora of the Neuquén Basin, its paleoenvironmental and paleoclimatic significance
title_fullStr	The Cretaceous flora of the Neuquén Basin, its paleoenvironmental and paleoclimatic significance
title_full_unstemmed	The Cretaceous flora of the Neuquén Basin, its paleoenvironmental and paleoclimatic significance
title_sort	cretaceous flora of the neuquén basin, its paleoenvironmental and paleoclimatic significance
publishDate	2009
url	http://hdl.handle.net/20.500.12110/paper_00044822_v65_n2_p373_Ottone
work_keys_str_mv	AT ottoneeg thecretaceousfloraoftheneuquenbasinitspaleoenvironmentalandpaleoclimaticsignificance AT ottoneeg cretaceousfloraoftheneuquenbasinitspaleoenvironmentalandpaleoclimaticsignificance
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The Cretaceous flora of the Neuquén Basin, its paleoenvironmental and paleoclimatic significance

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