Palynoflora from the La Anita Formation (Maastrichtian), Austral-Magallanes Basin, Argentina

Here we describe the spore and pollen assemblages recovered from the La Anita Formation, Late Cretaceous, Austral-Magallanes Basin (~50°S). This unit shows a high diversity of spores, with subordinate gymnosperms (mainly represented by Podocarpaceae) and angiosperms (mainly represented by Proteaceae...

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Autores principales: Santamarina, Patricio Emmanuel, Barreda, Viviana Dora, Moyano Paz, Damián, Tettamanti, Camila, Iglesias, Ari, Poiré, Daniel Gustavo, Varela, Augusto Nicolás
Formato: Articulo
Lenguaje:Inglés
Publicado: 2020
Materias:
Geología
Late Cretaceous
Austral-Magallanes Basin
Patagonia
Palynology
Cretácico Superior
Cuenca Austral-Magallanes
Palinología
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/111316
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-111316
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Geología
Late Cretaceous
Austral-Magallanes Basin
Patagonia
Palynology
Cretácico Superior
Cuenca Austral-Magallanes
Palinología
spellingShingle Geología
Late Cretaceous
Austral-Magallanes Basin
Patagonia
Palynology
Cretácico Superior
Cuenca Austral-Magallanes
Palinología
Santamarina, Patricio Emmanuel
Barreda, Viviana Dora
Moyano Paz, Damián
Tettamanti, Camila
Iglesias, Ari
Poiré, Daniel Gustavo
Varela, Augusto Nicolás
Palynoflora from the La Anita Formation (Maastrichtian), Austral-Magallanes Basin, Argentina
topic_facet Geología
Late Cretaceous
Austral-Magallanes Basin
Patagonia
Palynology
Cretácico Superior
Cuenca Austral-Magallanes
Palinología
description Here we describe the spore and pollen assemblages recovered from the La Anita Formation, Late Cretaceous, Austral-Magallanes Basin (~50°S). This unit shows a high diversity of spores, with subordinate gymnosperms (mainly represented by Podocarpaceae) and angiosperms (mainly represented by Proteaceae and Arecaceae). The abundance of these groups varies between the two fertile studied levels, being one dominated by ferns (mainly Cyathidites minor and Laevigatosporites ovatus) and the other by gymnosperms (Podocarpidites spp.). The presence of aquatic ferns (Azollopsis), diverse Podocarpaceae and key angiosperm taxa (such as Arecipites, Clavatipollenites, Dichastopollenites, and Spinizonocolpites) is indicative of warm and hyper-humid conditions. The great abundance of Arecaceae and the presence of some key taxa (e.g. Azollopsis sp., Ericipites scabratus, Peninsulapollis gillii, Proteacidites spp.) support a probable Maastrichtian age for the uppermost strata of the La Anita Formation. The multivariate statistical analysis here conducted showed that the La Anita Formation has its greatest similarity with the La Irene Formation (Maastrichtian from the Austral-Magallanes Basin). Both formations are also related with other coeval palynofloras from Patagonia and Antarctica.
format Articulo
Articulo
author Santamarina, Patricio Emmanuel
Barreda, Viviana Dora
Moyano Paz, Damián
Tettamanti, Camila
Iglesias, Ari
Poiré, Daniel Gustavo
Varela, Augusto Nicolás
author_facet Santamarina, Patricio Emmanuel
Barreda, Viviana Dora
Moyano Paz, Damián
Tettamanti, Camila
Iglesias, Ari
Poiré, Daniel Gustavo
Varela, Augusto Nicolás
author_sort Santamarina, Patricio Emmanuel
title Palynoflora from the La Anita Formation (Maastrichtian), Austral-Magallanes Basin, Argentina
title_short Palynoflora from the La Anita Formation (Maastrichtian), Austral-Magallanes Basin, Argentina
title_full Palynoflora from the La Anita Formation (Maastrichtian), Austral-Magallanes Basin, Argentina
title_fullStr Palynoflora from the La Anita Formation (Maastrichtian), Austral-Magallanes Basin, Argentina
title_full_unstemmed Palynoflora from the La Anita Formation (Maastrichtian), Austral-Magallanes Basin, Argentina
title_sort palynoflora from the la anita formation (maastrichtian), austral-magallanes basin, argentina
publishDate 2020
url http://sedici.unlp.edu.ar/handle/10915/111316
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