Late Maastrichtian to Danian organic-walled dinoflagellate cysts and calcareous nannofossils from eastern Austral Basin, Patagonia, Argentina

Estebenet, M. Sol González; Guler, M. Verónica; Panera, Juan Pablo Pérez

doi:10.1016/j.revpalbo.2020.104342

Cited by 8 publications

(12 citation statements)

References 97 publications

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“…England Finder (EF) coordinates for each specimen are provided; the coordinates are taken with the slide label to the left. The biostratigraphical events of selected dinocysts taxa, as well as the calcareous nannofossil and foraminifera zones recorded in the Danian of the PV borehole (Masiuk et al, 1976;Caramés et al, 2004;González Estebenet et al, 2022;this paper)…”

Section: Methodsmentioning

confidence: 99%

“…1) (e.g., Masiuk et al, 1976;Yrigoyen, 1989;Marinelli & Franzin, 1996;Caramés et al, 2004;Continanzia et al, 2011). The borehole reached 2754 m, and the Cenozoic marine deposits extend between 885 meters below ground surface (mbgs) and 55 mbgs (Masiuk et al, 1976;Yrigoyen, 1989;Marinelli & Franzin, 1996;Continanzia et al, 2011;González Estebenet et al, 2022).…”

Section: Geological Settingmentioning

confidence: 99%

“…The lower Cenozoic section (779-885 mbgs), assigned to the Danian-early Selandian age (González Estebenet et al, 2022), is composed of pale-brown silty sandstones and fine to coarse gray sandstones containing shells, corals and echinoderms remains (Masiuk et al, 1976).…”

Section: Geological Settingmentioning

confidence: 99%

“…THE LATE CRETACEOUS AND PALEOCENE shallow-marine deposits from the north of Patagonia (Argentina) and the adjacent continental shelf (Fig. 1) provided a valuable organic-walled dinoflagellate cyst (dinocyst) record and the recognition of important global marker species (e.g., Gamerro & Archangelsky, 1981;Quattrocchio & Sarjeant, 1996;Papú et al, 1999;Palamarczuk et al, 2002;Guler et al, 2014;Borel et al, 2016;Vellekoop et al, 2017;Woelders et al, 2017;Ottone et al, 2018;Guler et al, 2019;González Estebenet et al, 2021, 2022.…”

mentioning

confidence: 99%

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Trithyrodinium verrucosum (Heisecke, 1970) comb. nov., Emend: An Early Paleogene (Danian) Dinoflagellate Cyst Species from the North of Patagonia, Argentina. Regional Stratigraphic and Paleoenvironmental Relevance

Estebenet¹,

Guler²

2023

Ameghiniana

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Trithyrodinium verrucosum comb. nov., emend. was originally described as Scriniodinium verrucosum in Danian deposits of the Roca Formation (Neuquén Basin, west Argentina) by Heisecke (1970). Well-preserved specimens recovered from the YPF.Ch.PV.es-1 borehole (Valdés Basin, east Argentina) and the re-examination of the original material allowed in this paper the emendation of the species, including recognition of an archeopyle type 3I, one of the diagnostic feature that led us to transfer the species to the genus Trithyrodinium. Based on the dinoflagellate cyst assemblages as well as the calcareous foraminifera and nannofossils content recovered from the stratigraphical interval containing Trithyrodinium verrucosum, we suggest the age of the Highest Common Occurrence (HCO) of this species not younger than middle Danian, and linked to the nannofossil Zone NP3. Hence, Trithyrodinium verrucosum may be a biostratigraphical marker for the Danian in the north of Patagonia, and the HCO is potentially useful for regional (inter-basinal) correlation of early Paleocene chronostratigraphical units from the south Atlantic basins. Also, the peak abundance of Trithyrodinium verrucosum in association with warm-water taxa (e.g., Trithyrodinium evittii) might have occurred during globally warming episodes in the Danian.

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Section: Methodsmentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

mentioning

confidence: 99%

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Trithyrodinium verrucosum (Heisecke, 1970) comb. nov., Emend: An Early Paleogene (Danian) Dinoflagellate Cyst Species from the North of Patagonia, Argentina. Regional Stratigraphic and Paleoenvironmental Relevance

Estebenet¹,

Guler²

2023

Ameghiniana

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“…Remarks. This species is a good marker for the Danian in the Argentine offshore basins (Pérez Panera & Angelozzi, 2006;Pérez Panera et al, 2015;Guler et al, 2019) and particularly in the Austral Basin (Pérez Panera, 2009González Estebenet et al, 2021).…”

Section: Occurrence Early-middle Eocene (West Well)mentioning

confidence: 99%

Ensambles De Microfósiles (Foraminíferos Y Nanofósiles Calcáreos) Cenozoicos Del Subsuelo De La Cuenca De Magallanes, Isla De Tierra Del Fuego, Chile

Thissen¹,

Panera²

2021

PEAPA

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Foraminifera and calcareous nannofossils from washed drill-cuttings of three wells in the Chilean sector of the Magallanes Basin were studied. This contribution aims to identify, characterize and illustrate microfossil assemblages throughout the Cenozoic sedimentary record to integrate foraminiferal and nannofossil data, and improve further biostratigraphic studies in the basin. The analyzed Paleogene and Neogene successions in these three wells correspond to five discrete foraminiferal and nannofossil assemblages, which were recognized and are described here: the early-middle Paleocene assemblage is mainly characterized by agglutinated foraminifera and few nannofossil species like Chiasmolithus danicus and Prinsius tenuiculus; the early Eocene assemblage is represented by low diversity and oceanic species, consisting of planktic foraminifera like Subbotina triloculinoides, radiolarians and calcareous nannofossils including Chiasmolithus bidens and Toweius pertusus; the middle-late Eocene assemblage is the most diverse of all those distinguished in this study, as it contains a rich microfauna of benthic and planktic foraminifera including the species Elphidium saginatum, Virgulinella severini, and Globigerinatheka index, as well as numerous nannofossils like Chiasmolithus solitus, C. oamaruensis and Reticulofenestra reticulata; the early Oligocene marks the turnover to a reduced assemblage including Subbotina angiporoides and Chiasmolithus altus; and ultimately, the late Oligocene-early Miocene assemblage, characterized by a low species richness of mainly nonionid foraminifera and reticulofenestrid nannofossils. A detailed systematic list of both foraminiferal and nannofossil species is presented, intended to serve as a catalogue that will help to identify the different Cenozoic assemblages of the basin in future studies.

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A new elasmosaurid (Sauropterygia, Plesiosauria) from the upper levels of the La Colonia Formation (upper Maastrichtian), Chubut Province, Argentina

O'gorman

Carignano

Calvo-Marcilese

et al. 2023

Cretaceous Research

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Late Maastrichtian to Danian organic-walled dinoflagellate cysts and calcareous nannofossils from eastern Austral Basin, Patagonia, Argentina

Cited by 8 publications

References 97 publications

Trithyrodinium verrucosum (Heisecke, 1970) comb. nov., Emend: An Early Paleogene (Danian) Dinoflagellate Cyst Species from the North of Patagonia, Argentina. Regional Stratigraphic and Paleoenvironmental Relevance

Trithyrodinium verrucosum (Heisecke, 1970) comb. nov., Emend: An Early Paleogene (Danian) Dinoflagellate Cyst Species from the North of Patagonia, Argentina. Regional Stratigraphic and Paleoenvironmental Relevance

Ensambles De Microfósiles (Foraminíferos Y Nanofósiles Calcáreos) Cenozoicos Del Subsuelo De La Cuenca De Magallanes, Isla De Tierra Del Fuego, Chile

A new elasmosaurid (Sauropterygia, Plesiosauria) from the upper levels of the La Colonia Formation (upper Maastrichtian), Chubut Province, Argentina

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