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dc.contributor.author
Fuentes, Sabrina Natalia
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dc.date.available
2024-03-11T09:39:53Z
dc.date.issued
2023-05
dc.identifier.citation
Fuentes, Sabrina Natalia; Miocene dinoflagellate cyst biostratigraphy from the Península Valdés, Patagonia, Argentina; Taylor & Francis; Palynology; 47; 3; 5-2023; 1-16
dc.identifier.issn
0191-6122
dc.identifier.uri
http://hdl.handle.net/11336/229915
dc.description.abstract
The present work documents the stratigraphic distribution of dinoflagellate cysts from the upper part (60-585 m) of the YPF.Ch. PV. es-1 borehole, Península Valdés, Argentina. The assemblages exhibit a relatively moderate to low diversity. Most samples are characterized by frequent to abundant taxa of the order Gonyaulacales, such as Spiniferites/Achomosphaera spp., Reticulatosphaera actinocoronata, Operculodinium centrocarpum, and Melitasphaeridium choanophorum. Furthermore, a continuous succession of Lower Miocene-Upper Miocene diagnostic dinoflagellate cyst events was recorded for the first time from the Península Valdés region. Eight diagnostic events of highest occurrences (HOs) of dinoflagellate taxa are identified. These bioevents allowed a subdivision of the sedimentary succession into two well-defined stratigraphic sections: Lower to Middle Miocene (Burdigalian-Langhian/probably Serravalian, 430/425–330/325 m) based on the HOs of Emmetrocysta urnaformis, Cannosphaeropsis quattrocchiae, Cousteadinium auybriae, and Cleistosphaeridium ancyreum, and Upper Miocene (Tortonian-Messinian, between 175-170 and 80/85m) based on the HOs of Labyrinthodinium truncatum subsp. truncatum, Operculodinium piaseckii, and Reticulatosphaera actinocoronata. The range of these taxa is compared with well-documented information on Neogene dinoflagellate cysts recorded from different sites across the North and South Atlantic Oceans and adjacent seas. In general, the dinoflagellate cyst assemblages, as well as the selected diagnostic taxa, exhibits a clear similarity with those of the Northern Hemisphere. The only exception is Hystrichokolpoma rigaudiae, which is asynchronous, possibly indicating local paleoenvironmental conditions.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Taylor & Francis
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ARGENTINA
dc.subject
BIOSTRATIGRAPHY
dc.subject
DINOFLAGELLATE CYST
dc.subject
MIOCENE
dc.subject.classification
Paleontología
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Miocene dinoflagellate cyst biostratigraphy from the Península Valdés, Patagonia, Argentina
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-11-02T14:05:33Z
dc.journal.volume
47
dc.journal.number
3
dc.journal.pagination
1-16
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Londres
dc.description.fil
Fil: Fuentes, Sabrina Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Ciencias Biológicas y Biomédicas del Sur. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia. Instituto de Ciencias Biológicas y Biomédicas del Sur; Argentina
dc.journal.title
Palynology
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/full/10.1080/01916122.2023.2212276
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1080/01916122.2023.2212276
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