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dc.contributor.author
Vellekoop, Johan
dc.contributor.author
Holwerda, Femke
dc.contributor.author
Pramparo, Mercedes Beatriz
dc.contributor.author
Willmott, Veronica
dc.contributor.author
Schouten, Stefan
dc.contributor.author
Cúneo, Néstor Rubén
dc.contributor.author
Scasso, Roberto Adrian
dc.contributor.author
Brinkhuis, Henk
dc.date.available
2018-09-20T13:51:49Z
dc.date.issued
2017-07
dc.identifier.citation
Vellekoop, Johan; Holwerda, Femke; Pramparo, Mercedes Beatriz; Willmott, Veronica; Schouten, Stefan; et al.; Climate and sea-level changes across a shallow marine Cretaceous–Palaeogene boundary succession in Patagonia, Argentina; Wiley Blackwell Publishing, Inc; Palaeontology; 60; 4; 7-2017; 519-534
dc.identifier.issn
0031-0239
dc.identifier.uri
http://hdl.handle.net/11336/60384
dc.description.abstract
Upper Maastrichtian to lower Paleocene, coarse-grained deposits of the Lefipán Formation in Chubut Province, (Patagonia, Argentina) provide an opportunity to study environmental changes across the Cretaceous–Palaeogene (K–Pg) boundary in a shallow marine depositional environment. Marine palynological and organic geochemical analyses were performed on the K–Pg boundary interval of the Lefipán Formation at the San Ramón section. The palynological and organic geochemical records from the San Ramón K–Pg boundary section are characteristic of a highly dynamic, nearshore setting. High abundances of terrestrial palynomorphs, high BIT-index values and the occasional presence of plant fossils are indicative of a large input of terrestrial organic material. The organic-walled dinoflagellate cyst (dinocyst) assemblage is generally dominated by Senegalinium and other peridinioid dinocyst taxa, indicative of high-nutrient conditions and decreased salinities, probably associated with a large fluvial input. The reconstructed sea surface temperatures range from 25°C to 27°C, in accordance with the tropical climate inferred by palynological and megafloral studies. As in the Bajada del Jagüel section, ~500 km north-north-east of San Ramón, peaks of Senegalinium spp. were recorded below and above the K–Pg boundary, possibly related to enhanced runoff resulting from more humid climatic conditions. The lithological, palynological and organic geochemical records suggest the occurrence of a sea-level regression across the K–Pg boundary, resulting in a hiatus directly at the boundary in both sections, followed by a transgression in the Danian.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley Blackwell Publishing, Inc
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Argentina
dc.subject
Climate
dc.subject
Cretaceous
dc.subject
Dinocysts
dc.subject
Palaeogene
dc.subject
Sea Level
dc.subject.classification
Meteorología y Ciencias Atmosféricas
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Climate and sea-level changes across a shallow marine Cretaceous–Palaeogene boundary succession in 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
2018-09-12T17:31:02Z
dc.journal.volume
60
dc.journal.number
4
dc.journal.pagination
519-534
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Vellekoop, Johan. Utrecht University; Países Bajos. Department of Earth & Environmental Science; Bélgica
dc.description.fil
Fil: Holwerda, Femke. Bayerische Staatssammlung für Paläontologie und Geologie; Alemania. Universidade Nova de Lisboa; Portugal
dc.description.fil
Fil: Pramparo, Mercedes Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
dc.description.fil
Fil: Willmott, Veronica. Utrecht University; Países Bajos
dc.description.fil
Fil: Schouten, Stefan. Utrecht University; Países Bajos
dc.description.fil
Fil: Cúneo, Néstor Rubén. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; Argentina
dc.description.fil
Fil: Scasso, Roberto Adrian. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina
dc.description.fil
Fil: Brinkhuis, Henk. Utrecht University; Países Bajos
dc.journal.title
Palaeontology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1111/pala.12297
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1111/pala.12297
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