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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Detalles Bibliográficos
Publicado: 2014
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:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v71_n4_p_Varela
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 paper:paper_00044822_v71_n4_p_Varela
record_format dspace
spelling paper:paper_00044822_v71_n4_p_Varela2023-06-08T14:26:45Z Strontium isotopic composition from Northeast Patagonia: Preliminary results 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. 2014 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v71_n4_p_Varela 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
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.
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
publishDate 2014
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v71_n4_p_Varela
http://hdl.handle.net/20.500.12110/paper_00044822_v71_n4_p_Varela
_version_ 1768545444553555968

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