Changing fluvial styles in volcaniclastic successions: A cretaceous example from the Cerro Barcino Formation, Patagonia

Umazano, Aldo M.; Krause, J. Marcelo; Bellosi, Eduardo S.; Pérez, Mariano; Visconti, Graciela; Melchor, Ricardo N.

doi:10.1016/j.jsames.2017.05.005

Cited by 16 publications

(7 citation statements)

References 68 publications

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“…: dIVERSITY OF FOSSIL TURTLES IN CHUBUT rich, alluvial successions. The taxa from the Puesto La Paloma Member inhabited ephemeral and unconfined alluvial system that interacted with aeolian dunes and dry interdune zones (de la Fuente et al, 2011;Umazano et al, 2017). Turtles from the Cerro Castaño Member developed within a fluvial scenery, characterized by a permanent, meandering fluvial system, with lacustrine facies and minor ash-fall deposits (Umazano et al, 2017).…”

Section: 1-12)mentioning

confidence: 99%

“…The taxa from the Puesto La Paloma Member inhabited ephemeral and unconfined alluvial system that interacted with aeolian dunes and dry interdune zones (de la Fuente et al, 2011;Umazano et al, 2017). Turtles from the Cerro Castaño Member developed within a fluvial scenery, characterized by a permanent, meandering fluvial system, with lacustrine facies and minor ash-fall deposits (Umazano et al, 2017). The Bajo Barreal Formation, in the Golfo San Jorge Basin, is characterized by fluvial depositional systems with minor ashfall events, deposited within endorreic basins (Sciutto, 1981;Figari et al, 1999;Umazano et al, 2008;Allard et al, 2015;Paredes et al, 2016).…”

Section: 1-12)mentioning

confidence: 99%

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Contribución a La Diversidad Del Registro Fósil De Tortugas (Testudinata) De La Provincia De Chubut (Argentina) Y Su Significado en La Comprensión De La Evolución De Las Tortugas en El Sur De Sudamérica

Sterli

Vlachos

Krause

et al. 2021

PEAPA

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In this work we focus on the fossil record of turtles and tortoises from the Chubut Province, in Patagonia, Argentina. This record is the richest, most diverse, the longest and continuous in the country and one of the most important in the continent. In this work, we present and study new fossils from all known clades of turtles from the province, coming from targeted field campaigns, as well as from past investigations, placed in a comprehensive and detailed chronostratigraphic context. In Chubut, more than 241 occurrences of turtles from at least 223 collection points are known, spanning from the Toarcian (Jurassic) to the Tortonian (Miocene). we manage to fill some of the gaps in the fossil record, complete the anatomical knowledge of many taxa, explore new geographical areas, and present some important highlights. Among these, the record of the oldest pan-chelid turtles indicates the significant potential of the sedimentary deposits of Chubut. Furthermore, we discuss the changes in the diversity and faunal turnovers of the various turtle clades in this region during the last 180 Ma and across important events during the Cretaceous/Paleocene and Oligocene/Miocene boundaries.

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Section: 1-12)mentioning

confidence: 99%

Section: 1-12)mentioning

confidence: 99%

Contribución a La Diversidad Del Registro Fósil De Tortugas (Testudinata) De La Provincia De Chubut (Argentina) Y Su Significado en La Comprensión De La Evolución De Las Tortugas en El Sur De Sudamérica

Sterli

Vlachos

Krause

et al. 2021

PEAPA

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“…The Cerro Barcino Formation of the Chubut Group is composed of fluvial volcaniclastic sediments and comprises four members, from bottom to top: Puesto La Paloma, Cerro Castaño, Las Plumas and Puesto Manuel Arce (Figari et al, 2015;Rauhut et al, 2003;Umazano et al, 2017). The Cerro Castaño Member comprises sheet-to ribbon-channel sandstone bodies intercalated within tuffaceous and fine-grained sediments (Umazano et al, 2017). U-Pb dating of tuffs collected from an ash layer at the titanosaur excavation, a few meters below the plant horizon, indicates an age of ca.…”

Section: Geological Settingmentioning

confidence: 99%

A new cupressaceous wood from the Lower Cretaceous of central Patagonia reveals possible clonal growth habit

Nunes

Bodnar

Escapa

et al. 2019

Cretaceous Research

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A new genus and species, Austrocupressinoxylon barcinense, based on remains of cupressaceous wood is described for the Lower Cretaceous of central Patagonia, Argentina. The studied specimens are silicified fragments of picnoxylic and homoxylic wood that exhibit a combination of characters not previously reported, therefore a new genus is erected. The characters are: 1-growth ring boundaries distinct, 2-transition from earlywood to latewood gradual, 3-axial parenchyma diffuse,4-radial tracheid pitting predominantly abietinean,5cross-field pitting cupressoid, arranged in both cupressoid and araucarioid patterns, 6-rays uniseriate heterocellular, 7-end and horizontal walls of ray parenchyma cells smooth or slightly nodular, and 8-ray tracheids with smooth walls. The cross-field pitting patterns and the

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“…The lower section of the Cerro Barcino Formation (Puesto La Paloma Member) mainly records unconfined fluvial sedimentation (e.g. Allard, Paredes, Foix, & Giacosa, 2010;Umazano, Krause, Bellosi, Perez, & Visconti, 2014). The overlying Cerro Castaño Member was deposited by channeled fluvial systems dominated by meandering-like features (e.g.…”

Section: Geological Settingmentioning

confidence: 99%

“…The overlying Cerro Castaño Member was deposited by channeled fluvial systems dominated by meandering-like features (e.g. Umazano et al, 2014). The remaining members of the Chubut Group (Las Plumas, Puesto Manuel Arce and Bayo Overo) crop out eastward, outside the study area, and also record channeled fluvial systems (Codignotto et al, 1978).…”

Section: Geological Settingmentioning

confidence: 99%

Aptian–Albian Cupressaceae (sensu stricto) woods from Cañadón Asfalto Basin, Patagonia Argentina

Brea

Bellosi

Umazano

et al. 2016

Cretaceous Research

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Changing fluvial styles in volcaniclastic successions: A cretaceous example from the Cerro Barcino Formation, Patagonia

Cited by 16 publications

References 68 publications

Contribución a La Diversidad Del Registro Fósil De Tortugas (Testudinata) De La Provincia De Chubut (Argentina) Y Su Significado en La Comprensión De La Evolución De Las Tortugas en El Sur De Sudamérica

Contribución a La Diversidad Del Registro Fósil De Tortugas (Testudinata) De La Provincia De Chubut (Argentina) Y Su Significado en La Comprensión De La Evolución De Las Tortugas en El Sur De Sudamérica

A new cupressaceous wood from the Lower Cretaceous of central Patagonia reveals possible clonal growth habit

Aptian–Albian Cupressaceae (sensu stricto) woods from Cañadón Asfalto Basin, Patagonia Argentina

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