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
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/96955
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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 |
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publishedVersion |
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http://sedici.unlp.edu.ar/handle/10915/96955 |
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http://sedici.unlp.edu.ar/handle/10915/96955 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
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