Petrography and geochemistry of the Carapé Granitic Complex (Southeastern Uruguay)

The southern sector of Uruguay was intruded by numerous granitic plutons during the Brasiliano Cycle. The granites and granodiorites of the Carapé Complex comprise a large part of the Neoproterozoic terrain exposed in southern Uruguay. Typological and age relationships show that the characteristic o...

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Autores principales: Sánchez-Bettucci, L., Oyhantçabal, P., Page, S., Ramos, V.A.
Formato: JOUR
Materias:
Brasiliano Cycle
Geochemistry
Granitoids
Petrography
Uruguay
geochemistry
granite
granitoid
petrogenesis
petrography
pluton
prograde metamorphism
(Southeast)
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_1342937X_v6_n1_p89_SanchezBettucci
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_1342937X_v6_n1_p89_SanchezBettucci2023-10-03T16:09:41Z Petrography and geochemistry of the Carapé Granitic Complex (Southeastern Uruguay) Sánchez-Bettucci, L. Oyhantçabal, P. Page, S. Ramos, V.A. Brasiliano Cycle Geochemistry Granitoids Petrography Uruguay geochemistry granite granitoid petrogenesis petrography pluton prograde metamorphism (Southeast) Uruguay The southern sector of Uruguay was intruded by numerous granitic plutons during the Brasiliano Cycle. The granites and granodiorites of the Carapé Complex comprise a large part of the Neoproterozoic terrain exposed in southern Uruguay. Typological and age relationships show that the characteristic of the granitic rocks changed during the Brasiliano Cycle. Four groups of granitoids can be distinguished according to their emplacement. The first group corresponds to the Campanero Unit, interpreted as a pre-Brasiliano basement, which includes mainly preorogenic granites. The second group, Pan de Azúcar and related granitoids, includes synorogenic granites and granodiorites. The third granitoid group, Dos Hermanos Granite and related plutons, is classified as late- to postorogenic granites. Finally, the fourth group, consisting of the Águila Granite and related plutons, is represented by alkaline amphibole-biotite granites and are considered as post-collisional alkaline granites, which we assign to an extensional event associated with post-collisional slab-break off marking the end of the late Proterozoic Brasiliano orogenic cycle. Most of the granitic plutons in this area (2,300 km2) are relatively well exposed and have well-defined intrusive relationships with the metamorphic country-rocks. These granitic rocks are the result of successive magma pulses from similar magma chambers through the late Proterozoic to early Paleozoic times. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_1342937X_v6_n1_p89_SanchezBettucci
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Brasiliano Cycle
Geochemistry
Granitoids
Petrography
Uruguay
geochemistry
granite
granitoid
petrogenesis
petrography
pluton
prograde metamorphism
(Southeast)
Uruguay
spellingShingle Brasiliano Cycle
Geochemistry
Granitoids
Petrography
Uruguay
geochemistry
granite
granitoid
petrogenesis
petrography
pluton
prograde metamorphism
(Southeast)
Uruguay
Sánchez-Bettucci, L.
Oyhantçabal, P.
Page, S.
Ramos, V.A.
Petrography and geochemistry of the Carapé Granitic Complex (Southeastern Uruguay)
topic_facet Brasiliano Cycle
Geochemistry
Granitoids
Petrography
Uruguay
geochemistry
granite
granitoid
petrogenesis
petrography
pluton
prograde metamorphism
(Southeast)
Uruguay
description The southern sector of Uruguay was intruded by numerous granitic plutons during the Brasiliano Cycle. The granites and granodiorites of the Carapé Complex comprise a large part of the Neoproterozoic terrain exposed in southern Uruguay. Typological and age relationships show that the characteristic of the granitic rocks changed during the Brasiliano Cycle. Four groups of granitoids can be distinguished according to their emplacement. The first group corresponds to the Campanero Unit, interpreted as a pre-Brasiliano basement, which includes mainly preorogenic granites. The second group, Pan de Azúcar and related granitoids, includes synorogenic granites and granodiorites. The third granitoid group, Dos Hermanos Granite and related plutons, is classified as late- to postorogenic granites. Finally, the fourth group, consisting of the Águila Granite and related plutons, is represented by alkaline amphibole-biotite granites and are considered as post-collisional alkaline granites, which we assign to an extensional event associated with post-collisional slab-break off marking the end of the late Proterozoic Brasiliano orogenic cycle. Most of the granitic plutons in this area (2,300 km2) are relatively well exposed and have well-defined intrusive relationships with the metamorphic country-rocks. These granitic rocks are the result of successive magma pulses from similar magma chambers through the late Proterozoic to early Paleozoic times.
format JOUR
author Sánchez-Bettucci, L.
Oyhantçabal, P.
Page, S.
Ramos, V.A.
author_facet Sánchez-Bettucci, L.
Oyhantçabal, P.
Page, S.
Ramos, V.A.
author_sort Sánchez-Bettucci, L.
title Petrography and geochemistry of the Carapé Granitic Complex (Southeastern Uruguay)
title_short Petrography and geochemistry of the Carapé Granitic Complex (Southeastern Uruguay)
title_full Petrography and geochemistry of the Carapé Granitic Complex (Southeastern Uruguay)
title_fullStr Petrography and geochemistry of the Carapé Granitic Complex (Southeastern Uruguay)
title_full_unstemmed Petrography and geochemistry of the Carapé Granitic Complex (Southeastern Uruguay)
title_sort petrography and geochemistry of the carapé granitic complex (southeastern uruguay)
url http://hdl.handle.net/20.500.12110/paper_1342937X_v6_n1_p89_SanchezBettucci
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AT oyhantcabalp petrographyandgeochemistryofthecarapegraniticcomplexsoutheasternuruguay
AT pages petrographyandgeochemistryofthecarapegraniticcomplexsoutheasternuruguay
AT ramosva petrographyandgeochemistryofthecarapegraniticcomplexsoutheasternuruguay
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