Chapter 52 The playa hermosa formation, playa verde basin, Uruguay

The Playa Hermosa Formation (Fm.) (Playa Verde Basin) is a volcano-sedimentary unit that crops out in the extreme south of the Dom Feliciano Belt in Uruguay. This formation has traditionally been interpreted as non-glacial in origin, but recently it has been suggested that the lower part at least ma...

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Autores principales:	Pazos, P.J., Rapalini, A.E., Bettucci, L.S., Tófalo, O.R.
Formato:	SER
Materias:	argon-argon dating glacial sedimentation lithostratigraphy paleomagnetism Proterozoic stratigraphic correlation Brazil Dom Feliciano Belt Rio de la Plata Rio Grande do Sul Uruguay
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_04354052_v36_n1_p547_Pazos
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

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spelling	todo:paper_04354052_v36_n1_p547_Pazos2023-10-03T15:34:05Z Chapter 52 The playa hermosa formation, playa verde basin, Uruguay Pazos, P.J. Rapalini, A.E. Bettucci, L.S. Tófalo, O.R. argon-argon dating glacial sedimentation lithostratigraphy paleomagnetism Proterozoic stratigraphic correlation Brazil Dom Feliciano Belt Rio de la Plata Rio Grande do Sul Uruguay The Playa Hermosa Formation (Fm.) (Playa Verde Basin) is a volcano-sedimentary unit that crops out in the extreme south of the Dom Feliciano Belt in Uruguay. This formation has traditionally been interpreted as non-glacial in origin, but recently it has been suggested that the lower part at least may be glacially influenced. The stratigraphic position of the Playa Hermosa Fm. and its correlation with other Neoproterozoic units of Uruguay, Argentina and southern Brazil remains in dispute. An age of c. 580 Ma is indicated by a hornblende 39Ar/ 40Ar age on magmatism regarded as coeval with syn-sedimentary volcanism. Preliminary palaeomagnetic data suggest a primary remanence and a mean geomagnetic pole consistent with the proposed apparent polar wander path for the Río de La Plata craton. In combination, these data suggest mid-Ediacaran glacial sedimentation in low to intermediate latitudes on the Río de la Plata craton. However, this conclusion needs to be reinforced by more thorough studies of the age and origin of the Playa Hermosa Fm. © The Geological Society of London 2011. Fil:Pazos, P.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Rapalini, A.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Tófalo, O.R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. SER info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_04354052_v36_n1_p547_Pazos
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	argon-argon dating glacial sedimentation lithostratigraphy paleomagnetism Proterozoic stratigraphic correlation Brazil Dom Feliciano Belt Rio de la Plata Rio Grande do Sul Uruguay
spellingShingle	argon-argon dating glacial sedimentation lithostratigraphy paleomagnetism Proterozoic stratigraphic correlation Brazil Dom Feliciano Belt Rio de la Plata Rio Grande do Sul Uruguay Pazos, P.J. Rapalini, A.E. Bettucci, L.S. Tófalo, O.R. Chapter 52 The playa hermosa formation, playa verde basin, Uruguay
topic_facet	argon-argon dating glacial sedimentation lithostratigraphy paleomagnetism Proterozoic stratigraphic correlation Brazil Dom Feliciano Belt Rio de la Plata Rio Grande do Sul Uruguay
description	The Playa Hermosa Formation (Fm.) (Playa Verde Basin) is a volcano-sedimentary unit that crops out in the extreme south of the Dom Feliciano Belt in Uruguay. This formation has traditionally been interpreted as non-glacial in origin, but recently it has been suggested that the lower part at least may be glacially influenced. The stratigraphic position of the Playa Hermosa Fm. and its correlation with other Neoproterozoic units of Uruguay, Argentina and southern Brazil remains in dispute. An age of c. 580 Ma is indicated by a hornblende 39Ar/ 40Ar age on magmatism regarded as coeval with syn-sedimentary volcanism. Preliminary palaeomagnetic data suggest a primary remanence and a mean geomagnetic pole consistent with the proposed apparent polar wander path for the Río de La Plata craton. In combination, these data suggest mid-Ediacaran glacial sedimentation in low to intermediate latitudes on the Río de la Plata craton. However, this conclusion needs to be reinforced by more thorough studies of the age and origin of the Playa Hermosa Fm. © The Geological Society of London 2011.
format	SER
author	Pazos, P.J. Rapalini, A.E. Bettucci, L.S. Tófalo, O.R.
author_facet	Pazos, P.J. Rapalini, A.E. Bettucci, L.S. Tófalo, O.R.
author_sort	Pazos, P.J.
title	Chapter 52 The playa hermosa formation, playa verde basin, Uruguay
title_short	Chapter 52 The playa hermosa formation, playa verde basin, Uruguay
title_full	Chapter 52 The playa hermosa formation, playa verde basin, Uruguay
title_fullStr	Chapter 52 The playa hermosa formation, playa verde basin, Uruguay
title_full_unstemmed	Chapter 52 The playa hermosa formation, playa verde basin, Uruguay
title_sort	chapter 52 the playa hermosa formation, playa verde basin, uruguay
url	http://hdl.handle.net/20.500.12110/paper_04354052_v36_n1_p547_Pazos
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Chapter 52 The playa hermosa formation, playa verde basin, Uruguay

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