Palinología del Paleogeno tardío-Neo geno temprano, pozo Aries x-l, Plataforma Continental Argentina, Tierra del Fuego

Autores
Palamarczuk, Susana Carmen; Barreda, Viviana Dora
Año de publicación
2000
Idioma
español castellano
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Nineteen cutting samples from the Aries x-I well, drilled in the Argentine continental shelf, offshore Tierra del Fuego, were analized for palynology. Marine and terrestrial palynomorph assemblages, fairly well preserved, though neither diverse nor abundant, were recovered throughout the studied interval, comprising depths between 240-640 m. Four sections, D, e, B and A from botton to top are informally proposed on the basis of the palynological content. Sections D through B are considered Oligocene in age, most probably Upper Oligocene, whereas section A yielded Early Miocene assemblages, according to previously recorded species distribution in nearby areas. Two marine events were recognized in sections e and A respectively. The first is characterized by the presence of high amounts of protoperidinioid dinoflagellate cysts (up to 98%) mostly Brigantedinium sp., and the second, by equivalent amounts of both major dinocyst groups-gonyaulacoids, protoperidiniods- with absolute dominance of Nematosphaeropsis rigida Wrenn (32 % of the assemblage). An environmental trend from estuarine- transitional restricted (section C) to neritic nearshore marine (section A) is suggested. Terrestrial palynomorphs are abundant in sections e and A. Levels 500-550 m have large amounts of Nothofagidites spp., pterydophyte spores and fungal rernains, probably reflecting forest vegetation in the surrounding area. The interva1260-300 m, section A, yielded a diverse pollen grain assemblage mostly composed of the herbaceous and shrubby families Cyperaceae, Asteraceae, Chenopodiaceae and Anacardiaceae.
Fil: Palamarczuk, Susana Carmen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Recursos Geológicos (i); Argentina
Fil: Barreda, Viviana Dora. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Recursos Geológicos (i); Argentina
Materia
Dinoflagelados
Polen
Palinoestratigrafía
Plataforma
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/71772
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/71772
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Palinología del Paleogeno tardío-Neo geno temprano, pozo Aries x-l, Plataforma Continental Argentina, Tierra del FuegoPalamarczuk, Susana CarmenBarreda, Viviana DoraDinoflageladosPolenPalinoestratigrafíaPlataformahttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Nineteen cutting samples from the Aries x-I well, drilled in the Argentine continental shelf, offshore Tierra del Fuego, were analized for palynology. Marine and terrestrial palynomorph assemblages, fairly well preserved, though neither diverse nor abundant, were recovered throughout the studied interval, comprising depths between 240-640 m. Four sections, D, e, B and A from botton to top are informally proposed on the basis of the palynological content. Sections D through B are considered Oligocene in age, most probably Upper Oligocene, whereas section A yielded Early Miocene assemblages, according to previously recorded species distribution in nearby areas. Two marine events were recognized in sections e and A respectively. The first is characterized by the presence of high amounts of protoperidinioid dinoflagellate cysts (up to 98%) mostly Brigantedinium sp., and the second, by equivalent amounts of both major dinocyst groups-gonyaulacoids, protoperidiniods- with absolute dominance of Nematosphaeropsis rigida Wrenn (32 % of the assemblage). An environmental trend from estuarine- transitional restricted (section C) to neritic nearshore marine (section A) is suggested. Terrestrial palynomorphs are abundant in sections e and A. Levels 500-550 m have large amounts of Nothofagidites spp., pterydophyte spores and fungal rernains, probably reflecting forest vegetation in the surrounding area. The interva1260-300 m, section A, yielded a diverse pollen grain assemblage mostly composed of the herbaceous and shrubby families Cyperaceae, Asteraceae, Chenopodiaceae and Anacardiaceae.Fil: Palamarczuk, Susana Carmen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Recursos Geológicos (i); ArgentinaFil: Barreda, Viviana Dora. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Recursos Geológicos (i); ArgentinaAsociacion Paleontologica Argentina2000-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/71772Palamarczuk, Susana Carmen; Barreda, Viviana Dora; Palinología del Paleogeno tardío-Neo geno temprano, pozo Aries x-l, Plataforma Continental Argentina, Tierra del Fuego; Asociacion Paleontologica Argentina; Ameghiniana; 37; 2; 6-2000; 221-2340002-70141851-8044CONICET DigitalCONICETspainfo:eu-repo/semantics/altIdentifier/url/http://www.ameghiniana.org.ar/index.php/ameghiniana/article/view/2537info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:44:10Zoai:ri.conicet.gov.ar:11336/71772instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:44:10.62CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Palinología del Paleogeno tardío-Neo geno temprano, pozo Aries x-l, Plataforma Continental Argentina, Tierra del Fuego
title Palinología del Paleogeno tardío-Neo geno temprano, pozo Aries x-l, Plataforma Continental Argentina, Tierra del Fuego
spellingShingle Palinología del Paleogeno tardío-Neo geno temprano, pozo Aries x-l, Plataforma Continental Argentina, Tierra del Fuego
Palamarczuk, Susana Carmen
Dinoflagelados
Polen
Palinoestratigrafía
Plataforma
title_short Palinología del Paleogeno tardío-Neo geno temprano, pozo Aries x-l, Plataforma Continental Argentina, Tierra del Fuego
title_full Palinología del Paleogeno tardío-Neo geno temprano, pozo Aries x-l, Plataforma Continental Argentina, Tierra del Fuego
title_fullStr Palinología del Paleogeno tardío-Neo geno temprano, pozo Aries x-l, Plataforma Continental Argentina, Tierra del Fuego
title_full_unstemmed Palinología del Paleogeno tardío-Neo geno temprano, pozo Aries x-l, Plataforma Continental Argentina, Tierra del Fuego
title_sort Palinología del Paleogeno tardío-Neo geno temprano, pozo Aries x-l, Plataforma Continental Argentina, Tierra del Fuego
dc.creator.none.fl_str_mv Palamarczuk, Susana Carmen
Barreda, Viviana Dora
author Palamarczuk, Susana Carmen
author_facet Palamarczuk, Susana Carmen
Barreda, Viviana Dora
author_role author
author2 Barreda, Viviana Dora
author2_role author
dc.subject.none.fl_str_mv Dinoflagelados
Polen
Palinoestratigrafía
Plataforma
topic Dinoflagelados
Polen
Palinoestratigrafía
Plataforma
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Nineteen cutting samples from the Aries x-I well, drilled in the Argentine continental shelf, offshore Tierra del Fuego, were analized for palynology. Marine and terrestrial palynomorph assemblages, fairly well preserved, though neither diverse nor abundant, were recovered throughout the studied interval, comprising depths between 240-640 m. Four sections, D, e, B and A from botton to top are informally proposed on the basis of the palynological content. Sections D through B are considered Oligocene in age, most probably Upper Oligocene, whereas section A yielded Early Miocene assemblages, according to previously recorded species distribution in nearby areas. Two marine events were recognized in sections e and A respectively. The first is characterized by the presence of high amounts of protoperidinioid dinoflagellate cysts (up to 98%) mostly Brigantedinium sp., and the second, by equivalent amounts of both major dinocyst groups-gonyaulacoids, protoperidiniods- with absolute dominance of Nematosphaeropsis rigida Wrenn (32 % of the assemblage). An environmental trend from estuarine- transitional restricted (section C) to neritic nearshore marine (section A) is suggested. Terrestrial palynomorphs are abundant in sections e and A. Levels 500-550 m have large amounts of Nothofagidites spp., pterydophyte spores and fungal rernains, probably reflecting forest vegetation in the surrounding area. The interva1260-300 m, section A, yielded a diverse pollen grain assemblage mostly composed of the herbaceous and shrubby families Cyperaceae, Asteraceae, Chenopodiaceae and Anacardiaceae.
Fil: Palamarczuk, Susana Carmen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Recursos Geológicos (i); Argentina
Fil: Barreda, Viviana Dora. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Recursos Geológicos (i); Argentina
description Nineteen cutting samples from the Aries x-I well, drilled in the Argentine continental shelf, offshore Tierra del Fuego, were analized for palynology. Marine and terrestrial palynomorph assemblages, fairly well preserved, though neither diverse nor abundant, were recovered throughout the studied interval, comprising depths between 240-640 m. Four sections, D, e, B and A from botton to top are informally proposed on the basis of the palynological content. Sections D through B are considered Oligocene in age, most probably Upper Oligocene, whereas section A yielded Early Miocene assemblages, according to previously recorded species distribution in nearby areas. Two marine events were recognized in sections e and A respectively. The first is characterized by the presence of high amounts of protoperidinioid dinoflagellate cysts (up to 98%) mostly Brigantedinium sp., and the second, by equivalent amounts of both major dinocyst groups-gonyaulacoids, protoperidiniods- with absolute dominance of Nematosphaeropsis rigida Wrenn (32 % of the assemblage). An environmental trend from estuarine- transitional restricted (section C) to neritic nearshore marine (section A) is suggested. Terrestrial palynomorphs are abundant in sections e and A. Levels 500-550 m have large amounts of Nothofagidites spp., pterydophyte spores and fungal rernains, probably reflecting forest vegetation in the surrounding area. The interva1260-300 m, section A, yielded a diverse pollen grain assemblage mostly composed of the herbaceous and shrubby families Cyperaceae, Asteraceae, Chenopodiaceae and Anacardiaceae.
publishDate 2000
dc.date.none.fl_str_mv 2000-06
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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://hdl.handle.net/11336/71772
Palamarczuk, Susana Carmen; Barreda, Viviana Dora; Palinología del Paleogeno tardío-Neo geno temprano, pozo Aries x-l, Plataforma Continental Argentina, Tierra del Fuego; Asociacion Paleontologica Argentina; Ameghiniana; 37; 2; 6-2000; 221-234
0002-7014
1851-8044
CONICET Digital
CONICET
url http://hdl.handle.net/11336/71772
identifier_str_mv Palamarczuk, Susana Carmen; Barreda, Viviana Dora; Palinología del Paleogeno tardío-Neo geno temprano, pozo Aries x-l, Plataforma Continental Argentina, Tierra del Fuego; Asociacion Paleontologica Argentina; Ameghiniana; 37; 2; 6-2000; 221-234
0002-7014
1851-8044
CONICET Digital
CONICET
dc.language.none.fl_str_mv spa
language spa
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.ameghiniana.org.ar/index.php/ameghiniana/article/view/2537
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Asociacion Paleontologica Argentina
publisher.none.fl_str_mv Asociacion Paleontologica Argentina
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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