Palinología de la Formación Monte Chico (Cretácico tardío) de la provincia de Santa Cruz, Argentina: granos de polen de gimnospermas
Palynological assemblages composed by continental and marine palynomorphs were recovered from the Monte Chico Formation, late Cretaceous, Santa Cruz Province. In this contribution palynological assemblages shaped by pollen grains belonging to the gymnosperms were studied. The samples were taken from...
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ftunivlaplata:oai:sedici.unlp.edu.ar:10915/120956 2023-05-15T13:43:37+02:00 Palinología de la Formación Monte Chico (Cretácico tardío) de la provincia de Santa Cruz, Argentina: granos de polen de gimnospermas Palynology of the Monte Chico Formation (Late Cretaceous) from Santa Cruz province, Argentina: pollen of gymnosperms Povilauskas, Leticia Karina 2012-04 application/pdf 85-94 http://sedici.unlp.edu.ar/handle/10915/120956 es spa http://sedici.unlp.edu.ar/handle/10915/120956 issn:1519-7530 http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) CC-BY-NC-SA Ciencias Naturales gymnosperms Monte Chico Formation Cretaceous Argentina Articulo 2012 ftunivlaplata 2021-07-04T00:04:54Z Palynological assemblages composed by continental and marine palynomorphs were recovered from the Monte Chico Formation, late Cretaceous, Santa Cruz Province. In this contribution palynological assemblages shaped by pollen grains belonging to the gymnosperms were studied. The samples were taken from the all section of this unit. Sixteen species of pollen grains were here determined. They belong to the genera: Araucariacites, Classopollis, Cycadopites, Dacrycarpites, Gamerroites, Lygistepollenites, Microcachyridites, Phyllocladidites, Podocarpidites and Trisaccites. On the basis of the stratigraphic distribution of the identified species, mainly in Argentina and Antarctica, and joined with the preliminary analysis determinate of spores, a Maastrichtian-Late Maastrichtian age is here suggested. The palynological assemblages obtained would indicate a typically marine near of shore environment of deposition, with continental conditions towards to the upper section. As assembleias palinológicas recuperadas dos sedimentos da Formação Monte Chico, Cretáceo superior, Província de Santa Cruz, apresentaram elementos marinhos (cistos de dinoflagelados) e continentais. Nesta contribuição foram estudadas as associações constituídas por grãos de pólen pertencentes às gimnospermas. As amostras foram recuperadas ao longo de toda a secção. Foram descritas dezesseis espécies de grãos de pólen, entre os gêneros: Araucariacites, Classopollis, Cycadopites, Dacrycarpites, Gamerroites, Lygistepollenites, Microcachyridites, Phyllocladidites, Podocarpidites e Trisaccites. Com base na distribuição estratigráfica das espécies identificadas, principalmente na Argentina e na Antártida, e juntamente com a análise dos esporos realizada anteriormente, sugere-se a idade Maastrichtiano a Maastrichtiano superior. A aglutinação palinológica recuperada indica um ambiente deposicional marinho, tipicamente perto do mar, com continentalização progressiva para a parte superior da secção. Facultad de Ciencias Naturales y Museo Consejo Nacional de Investigaciones Científicas y Técnicas Article in Journal/Newspaper Antarc* Antarctica Antártida Universidad Nacional de La Plata (UNLP): SeDiCI (Servicio de Difusión de la Creación Intelectual) Argentina monte Chico ENVELOPE(-63.400,-63.400,-65.050,-65.050) |
institution |
Open Polar |
collection |
Universidad Nacional de La Plata (UNLP): SeDiCI (Servicio de Difusión de la Creación Intelectual) |
op_collection_id |
ftunivlaplata |
language |
Spanish |
topic |
Ciencias Naturales gymnosperms Monte Chico Formation Cretaceous Argentina |
spellingShingle |
Ciencias Naturales gymnosperms Monte Chico Formation Cretaceous Argentina Povilauskas, Leticia Karina Palinología de la Formación Monte Chico (Cretácico tardío) de la provincia de Santa Cruz, Argentina: granos de polen de gimnospermas |
topic_facet |
Ciencias Naturales gymnosperms Monte Chico Formation Cretaceous Argentina |
description |
Palynological assemblages composed by continental and marine palynomorphs were recovered from the Monte Chico Formation, late Cretaceous, Santa Cruz Province. In this contribution palynological assemblages shaped by pollen grains belonging to the gymnosperms were studied. The samples were taken from the all section of this unit. Sixteen species of pollen grains were here determined. They belong to the genera: Araucariacites, Classopollis, Cycadopites, Dacrycarpites, Gamerroites, Lygistepollenites, Microcachyridites, Phyllocladidites, Podocarpidites and Trisaccites. On the basis of the stratigraphic distribution of the identified species, mainly in Argentina and Antarctica, and joined with the preliminary analysis determinate of spores, a Maastrichtian-Late Maastrichtian age is here suggested. The palynological assemblages obtained would indicate a typically marine near of shore environment of deposition, with continental conditions towards to the upper section. As assembleias palinológicas recuperadas dos sedimentos da Formação Monte Chico, Cretáceo superior, Província de Santa Cruz, apresentaram elementos marinhos (cistos de dinoflagelados) e continentais. Nesta contribuição foram estudadas as associações constituídas por grãos de pólen pertencentes às gimnospermas. As amostras foram recuperadas ao longo de toda a secção. Foram descritas dezesseis espécies de grãos de pólen, entre os gêneros: Araucariacites, Classopollis, Cycadopites, Dacrycarpites, Gamerroites, Lygistepollenites, Microcachyridites, Phyllocladidites, Podocarpidites e Trisaccites. Com base na distribuição estratigráfica das espécies identificadas, principalmente na Argentina e na Antártida, e juntamente com a análise dos esporos realizada anteriormente, sugere-se a idade Maastrichtiano a Maastrichtiano superior. A aglutinação palinológica recuperada indica um ambiente deposicional marinho, tipicamente perto do mar, com continentalização progressiva para a parte superior da secção. Facultad de Ciencias Naturales y Museo Consejo Nacional de Investigaciones Científicas y Técnicas |
format |
Article in Journal/Newspaper |
author |
Povilauskas, Leticia Karina |
author_facet |
Povilauskas, Leticia Karina |
author_sort |
Povilauskas, Leticia Karina |
title |
Palinología de la Formación Monte Chico (Cretácico tardío) de la provincia de Santa Cruz, Argentina: granos de polen de gimnospermas |
title_short |
Palinología de la Formación Monte Chico (Cretácico tardío) de la provincia de Santa Cruz, Argentina: granos de polen de gimnospermas |
title_full |
Palinología de la Formación Monte Chico (Cretácico tardío) de la provincia de Santa Cruz, Argentina: granos de polen de gimnospermas |
title_fullStr |
Palinología de la Formación Monte Chico (Cretácico tardío) de la provincia de Santa Cruz, Argentina: granos de polen de gimnospermas |
title_full_unstemmed |
Palinología de la Formación Monte Chico (Cretácico tardío) de la provincia de Santa Cruz, Argentina: granos de polen de gimnospermas |
title_sort |
palinología de la formación monte chico (cretácico tardío) de la provincia de santa cruz, argentina: granos de polen de gimnospermas |
publishDate |
2012 |
url |
http://sedici.unlp.edu.ar/handle/10915/120956 |
long_lat |
ENVELOPE(-63.400,-63.400,-65.050,-65.050) |
geographic |
Argentina monte Chico |
geographic_facet |
Argentina monte Chico |
genre |
Antarc* Antarctica Antártida |
genre_facet |
Antarc* Antarctica Antártida |
op_relation |
http://sedici.unlp.edu.ar/handle/10915/120956 issn:1519-7530 |
op_rights |
http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
op_rightsnorm |
CC-BY-NC-SA |
_version_ |
1766191235967483904 |