Paleoecology and paleoenvironments of Podocarp trees in the Ameghino Petrified forest (Golfo San Jorge Basin, Patagonia, Argentina) : Constraints for early Paleogene paleoclimate

Autores
Brea, Mariana; Matheos, Sergio Daniel; Raigemborn, María Sol; Iglesias, Ari; Zucol, Alejandro Fabián; Pramparo, Mercedes Beatriz
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
During the Early Paleocene (Danian), Central Patagonia had a warm-temperate climate and was dominated by evergreen coniferous forests. Abundant permineralized conifer woods along with some dicot and palm leaf compressions were found in the Ameghino Petrified Forest, and provide evidence of this type of flora. All the permineralized wood and large trunks recovered were assigned to the species Podocarpoxylon mazzonii. An estimated tree height of 17-29m was calculated on the basis of diameter measurements. Based on 14 ring sequences, with a total of 169 rings, the mean ring width and Mean Sensitivity (MS) were 1.23 and 0.19mm respectively. The growth rings are moderately wide, extremely uniform and complacent, indicating that the environment was favourable and constant, and lacked significant stress factors limiting tree growth. Following the quantitative analysis for conifers outlined by Falcon-Lang, the growth ring anatomy of the Podocarpoxylon mazzonii suggests that these trees had an evergreen habit. The combination of the fossil flora, growth ring, and sedimentological analyses suggest that this mostly evergreen coniferous forest developed under warm-temperate conditions and without limiting factors.
Facultad de Ciencias Naturales y Museo
Materia
Paleontología
Ciencias Naturales
Argentina
Early paleocene
Paleoecology
Patagonia
Petrified woods
Podocarpoxylon
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/96955

id SEDICI_ec3bb9dbbfb8189d12f4686d89b041cf
oai_identifier_str oai:sedici.unlp.edu.ar:10915/96955
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Paleoecology and paleoenvironments of Podocarp trees in the Ameghino Petrified forest (Golfo San Jorge Basin, Patagonia, Argentina) : Constraints for early Paleogene paleoclimateBrea, MarianaMatheos, Sergio DanielRaigemborn, María SolIglesias, AriZucol, Alejandro FabiánPramparo, Mercedes BeatrizPaleontologíaCiencias NaturalesArgentinaEarly paleocenePaleoecologyPatagoniaPetrified woodsPodocarpoxylonDuring the Early Paleocene (Danian), Central Patagonia had a warm-temperate climate and was dominated by evergreen coniferous forests. Abundant permineralized conifer woods along with some dicot and palm leaf compressions were found in the Ameghino Petrified Forest, and provide evidence of this type of flora. All the permineralized wood and large trunks recovered were assigned to the species <i>Podocarpoxylon mazzonii</i>. An estimated tree height of 17-29m was calculated on the basis of diameter measurements. Based on 14 ring sequences, with a total of 169 rings, the mean ring width and Mean Sensitivity (MS) were 1.23 and 0.19mm respectively. The growth rings are moderately wide, extremely uniform and complacent, indicating that the environment was favourable and constant, and lacked significant stress factors limiting tree growth. Following the quantitative analysis for conifers outlined by Falcon-Lang, the growth ring anatomy of the <i>Podocarpoxylon mazzonii</i> suggests that these trees had an evergreen habit. The combination of the fossil flora, growth ring, and sedimentological analyses suggest that this mostly evergreen coniferous forest developed under warm-temperate conditions and without limiting factors.Facultad de Ciencias Naturales y Museo2011-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf13-28http://sedici.unlp.edu.ar/handle/10915/96955enginfo:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/11336/80194info:eu-repo/semantics/altIdentifier/url/http://revistes.ub.edu/index.php/GEOACTA/article/view/105.000001647info:eu-repo/semantics/altIdentifier/issn/1695-6133info:eu-repo/semantics/altIdentifier/doi/10.1344/105.000001647info:eu-repo/semantics/altIdentifier/hdl/11336/80194info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:20:25Zoai:sedici.unlp.edu.ar:10915/96955Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:20:26.215SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Paleoecology and paleoenvironments of Podocarp trees in the Ameghino Petrified forest (Golfo San Jorge Basin, Patagonia, Argentina) : Constraints for early Paleogene paleoclimate
title Paleoecology and paleoenvironments of Podocarp trees in the Ameghino Petrified forest (Golfo San Jorge Basin, Patagonia, Argentina) : Constraints for early Paleogene paleoclimate
spellingShingle Paleoecology and paleoenvironments of Podocarp trees in the Ameghino Petrified forest (Golfo San Jorge Basin, Patagonia, Argentina) : Constraints for early Paleogene paleoclimate
Brea, Mariana
Paleontología
Ciencias Naturales
Argentina
Early paleocene
Paleoecology
Patagonia
Petrified woods
Podocarpoxylon
title_short Paleoecology and paleoenvironments of Podocarp trees in the Ameghino Petrified forest (Golfo San Jorge Basin, Patagonia, Argentina) : Constraints for early Paleogene paleoclimate
title_full Paleoecology and paleoenvironments of Podocarp trees in the Ameghino Petrified forest (Golfo San Jorge Basin, Patagonia, Argentina) : Constraints for early Paleogene paleoclimate
title_fullStr Paleoecology and paleoenvironments of Podocarp trees in the Ameghino Petrified forest (Golfo San Jorge Basin, Patagonia, Argentina) : Constraints for early Paleogene paleoclimate
title_full_unstemmed Paleoecology and paleoenvironments of Podocarp trees in the Ameghino Petrified forest (Golfo San Jorge Basin, Patagonia, Argentina) : Constraints for early Paleogene paleoclimate
title_sort Paleoecology and paleoenvironments of Podocarp trees in the Ameghino Petrified forest (Golfo San Jorge Basin, Patagonia, Argentina) : Constraints for early Paleogene paleoclimate
dc.creator.none.fl_str_mv Brea, Mariana
Matheos, Sergio Daniel
Raigemborn, María Sol
Iglesias, Ari
Zucol, Alejandro Fabián
Pramparo, Mercedes Beatriz
author Brea, Mariana
author_facet Brea, Mariana
Matheos, Sergio Daniel
Raigemborn, María Sol
Iglesias, Ari
Zucol, Alejandro Fabián
Pramparo, Mercedes Beatriz
author_role author
author2 Matheos, Sergio Daniel
Raigemborn, María Sol
Iglesias, Ari
Zucol, Alejandro Fabián
Pramparo, Mercedes Beatriz
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Paleontología
Ciencias Naturales
Argentina
Early paleocene
Paleoecology
Patagonia
Petrified woods
Podocarpoxylon
topic Paleontología
Ciencias Naturales
Argentina
Early paleocene
Paleoecology
Patagonia
Petrified woods
Podocarpoxylon
dc.description.none.fl_txt_mv During the Early Paleocene (Danian), Central Patagonia had a warm-temperate climate and was dominated by evergreen coniferous forests. Abundant permineralized conifer woods along with some dicot and palm leaf compressions were found in the Ameghino Petrified Forest, and provide evidence of this type of flora. All the permineralized wood and large trunks recovered were assigned to the species <i>Podocarpoxylon mazzonii</i>. An estimated tree height of 17-29m was calculated on the basis of diameter measurements. Based on 14 ring sequences, with a total of 169 rings, the mean ring width and Mean Sensitivity (MS) were 1.23 and 0.19mm respectively. The growth rings are moderately wide, extremely uniform and complacent, indicating that the environment was favourable and constant, and lacked significant stress factors limiting tree growth. Following the quantitative analysis for conifers outlined by Falcon-Lang, the growth ring anatomy of the <i>Podocarpoxylon mazzonii</i> suggests that these trees had an evergreen habit. The combination of the fossil flora, growth ring, and sedimentological analyses suggest that this mostly evergreen coniferous forest developed under warm-temperate conditions and without limiting factors.
Facultad de Ciencias Naturales y Museo
description During the Early Paleocene (Danian), Central Patagonia had a warm-temperate climate and was dominated by evergreen coniferous forests. Abundant permineralized conifer woods along with some dicot and palm leaf compressions were found in the Ameghino Petrified Forest, and provide evidence of this type of flora. All the permineralized wood and large trunks recovered were assigned to the species <i>Podocarpoxylon mazzonii</i>. An estimated tree height of 17-29m was calculated on the basis of diameter measurements. Based on 14 ring sequences, with a total of 169 rings, the mean ring width and Mean Sensitivity (MS) were 1.23 and 0.19mm respectively. The growth rings are moderately wide, extremely uniform and complacent, indicating that the environment was favourable and constant, and lacked significant stress factors limiting tree growth. Following the quantitative analysis for conifers outlined by Falcon-Lang, the growth ring anatomy of the <i>Podocarpoxylon mazzonii</i> suggests that these trees had an evergreen habit. The combination of the fossil flora, growth ring, and sedimentological analyses suggest that this mostly evergreen coniferous forest developed under warm-temperate conditions and without limiting factors.
publishDate 2011
dc.date.none.fl_str_mv 2011-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/96955
url http://sedici.unlp.edu.ar/handle/10915/96955
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/11336/80194
info:eu-repo/semantics/altIdentifier/url/http://revistes.ub.edu/index.php/GEOACTA/article/view/105.000001647
info:eu-repo/semantics/altIdentifier/issn/1695-6133
info:eu-repo/semantics/altIdentifier/doi/10.1344/105.000001647
info:eu-repo/semantics/altIdentifier/hdl/11336/80194
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
13-28
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
_version_ 1844616078778433536
score 13.070432