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dc.contributor.author
Palamarczuk, Susana Carmen  
dc.contributor.author
Barreda, Viviana Dora  
dc.date.available
2019-03-15T18:55:22Z  
dc.date.issued
2000-06  
dc.identifier.citation
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  
dc.identifier.issn
0002-7014  
dc.identifier.uri
http://hdl.handle.net/11336/71772  
dc.description.abstract
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.  
dc.format
application/pdf  
dc.language.iso
spa  
dc.publisher
Asociacion Paleontologica Argentina  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Dinoflagelados  
dc.subject
Polen  
dc.subject
Palinoestratigrafía  
dc.subject
Plataforma  
dc.subject.classification
Paleontología  
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Palinología del Paleogeno tardío-Neo geno temprano, pozo Aries x-l, Plataforma Continental Argentina, Tierra del Fuego  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2019-03-14T14:15:00Z  
dc.identifier.eissn
1851-8044  
dc.journal.volume
37  
dc.journal.number
2  
dc.journal.pagination
221-234  
dc.journal.pais
Argentina  
dc.journal.ciudad
Ciudad Autónoma de Buenos Aires  
dc.description.fil
Fil: Palamarczuk, Susana Carmen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Recursos Geológicos (i); Argentina  
dc.description.fil
Fil: Barreda, Viviana Dora. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Recursos Geológicos (i); Argentina  
dc.journal.title
Ameghiniana  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.ameghiniana.org.ar/index.php/ameghiniana/article/view/2537