Strontium isotopic composition from Northeast Patagonia: Preliminary results

We have carried out measurements of strontium isotopic compositions of carbonate units from northeastern Patagonia. The rock units included in the study are: a) Pailemán marble, with questionable belonging to El Jagüelito Formation, and mean87Sr/86Sr value of 0,707354 ± 0,000113; b) marbles from est...

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Autores principales:	Varela, R., González, P.D., Philipp, R., Sato, A.M., González, S., Greco, G., Naipauer, M.
Formato:	JOUR
Materias:	87Sr/86Sr Chemostratigraphy El Jagüelito formation Mina Gonzalito formation Cambrian carbonate rock chemostratigraphy isotopic composition limestone marble strontium isotope Argentina Patagonia Rio Negro [Argentina] Sierra Grande
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_00044822_v71_n4_p_Varela
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_00044822_v71_n4_p_Varela
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spelling	todo:paper_00044822_v71_n4_p_Varela2023-10-03T13:59:07Z Strontium isotopic composition from Northeast Patagonia: Preliminary results Varela, R. González, P.D. Philipp, R. Sato, A.M. González, S. Greco, G. Naipauer, M. 87Sr/86Sr Chemostratigraphy El Jagüelito formation Mina Gonzalito formation Cambrian carbonate rock chemostratigraphy isotopic composition limestone marble strontium isotope Argentina Patagonia Rio Negro [Argentina] Sierra Grande We have carried out measurements of strontium isotopic compositions of carbonate units from northeastern Patagonia. The rock units included in the study are: a) Pailemán marble, with questionable belonging to El Jagüelito Formation, and mean87Sr/86Sr value of 0,707354 ± 0,000113; b) marbles from estancia La Auriciana, Mina Gonzalito Complex, with mean87Sr/86Sr value of 0,708730 ± 0,000285; c) archaeocyathan limestone clasts from a metaconglomerate layer of El Jagüelito Formation in the Sierra Grande area, with mean87Sr/86Sr value of 0,710605 ± 0,000118. Comparison of these data with the global87Sr/86Sr evolution curve suggests that the Pailemán marble is the oldest (ca. 625 Ma), followed by the estancia La Auriciana marbles (ca. 550-510 Ma), while the archeocyathan limestone clasts from Sierra Grande area are Cambrian. © 2014, Asociacion Geologica Argentina. All rights reserved. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00044822_v71_n4_p_Varela
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	87Sr/86Sr Chemostratigraphy El Jagüelito formation Mina Gonzalito formation Cambrian carbonate rock chemostratigraphy isotopic composition limestone marble strontium isotope Argentina Patagonia Rio Negro [Argentina] Sierra Grande
spellingShingle	87Sr/86Sr Chemostratigraphy El Jagüelito formation Mina Gonzalito formation Cambrian carbonate rock chemostratigraphy isotopic composition limestone marble strontium isotope Argentina Patagonia Rio Negro [Argentina] Sierra Grande Varela, R. González, P.D. Philipp, R. Sato, A.M. González, S. Greco, G. Naipauer, M. Strontium isotopic composition from Northeast Patagonia: Preliminary results
topic_facet	87Sr/86Sr Chemostratigraphy El Jagüelito formation Mina Gonzalito formation Cambrian carbonate rock chemostratigraphy isotopic composition limestone marble strontium isotope Argentina Patagonia Rio Negro [Argentina] Sierra Grande
description	We have carried out measurements of strontium isotopic compositions of carbonate units from northeastern Patagonia. The rock units included in the study are: a) Pailemán marble, with questionable belonging to El Jagüelito Formation, and mean87Sr/86Sr value of 0,707354 ± 0,000113; b) marbles from estancia La Auriciana, Mina Gonzalito Complex, with mean87Sr/86Sr value of 0,708730 ± 0,000285; c) archaeocyathan limestone clasts from a metaconglomerate layer of El Jagüelito Formation in the Sierra Grande area, with mean87Sr/86Sr value of 0,710605 ± 0,000118. Comparison of these data with the global87Sr/86Sr evolution curve suggests that the Pailemán marble is the oldest (ca. 625 Ma), followed by the estancia La Auriciana marbles (ca. 550-510 Ma), while the archeocyathan limestone clasts from Sierra Grande area are Cambrian. © 2014, Asociacion Geologica Argentina. All rights reserved.
format	JOUR
author	Varela, R. González, P.D. Philipp, R. Sato, A.M. González, S. Greco, G. Naipauer, M.
author_facet	Varela, R. González, P.D. Philipp, R. Sato, A.M. González, S. Greco, G. Naipauer, M.
author_sort	Varela, R.
title	Strontium isotopic composition from Northeast Patagonia: Preliminary results
title_short	Strontium isotopic composition from Northeast Patagonia: Preliminary results
title_full	Strontium isotopic composition from Northeast Patagonia: Preliminary results
title_fullStr	Strontium isotopic composition from Northeast Patagonia: Preliminary results
title_full_unstemmed	Strontium isotopic composition from Northeast Patagonia: Preliminary results
title_sort	strontium isotopic composition from northeast patagonia: preliminary results
url	http://hdl.handle.net/20.500.12110/paper_00044822_v71_n4_p_Varela
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Strontium isotopic composition from Northeast Patagonia: Preliminary results

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