The dismembered basal ophiolitic sequence from Cordoba province, Argentina

Metamorphosed and folded Precambrian - Paleozoic ultramafic and mafic rocks, exposed in central - west Cordoba Province, define two NNO-SSE to NS belts. Samples were analysed from outcrops on the southern side of the Sierra Grande (Atos Pampa - San Miguel, Los Guanacos, Cerro San Lorenzo and Los Per...

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Detalles Bibliográficos
Publicado: 1997
Materias:
ophiolite
Paleozoic
Precambrian
Argentina
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v52_n3_p275_Mutti
http://hdl.handle.net/20.500.12110/paper_00044822_v52_n3_p275_Mutti
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00044822_v52_n3_p275_Mutti
record_format dspace
spelling paper:paper_00044822_v52_n3_p275_Mutti2023-06-08T14:25:17Z The dismembered basal ophiolitic sequence from Cordoba province, Argentina ophiolite Paleozoic Precambrian Argentina Metamorphosed and folded Precambrian - Paleozoic ultramafic and mafic rocks, exposed in central - west Cordoba Province, define two NNO-SSE to NS belts. Samples were analysed from outcrops on the southern side of the Sierra Grande (Atos Pampa - San Miguel, Los Guanacos, Cerro San Lorenzo and Los Permanentes bodies) and from the central zone of the Sierra Chica (Bosque Alegre and Alla Gracia bodies). These rocks represent mantle tectonites and transitional basal rocks of an ophiolitic complex which were intruded by ultrabasic and basic consanguineous tholeites and plagiogranitic dykes and by later continental granophyres. The ophiolitic basal section is exposed in conformity with metapelites (gneisses and schists), interlayered metabasalts (amphibolites) and metacarbonatic rocks, which represent the upper ophiolitic crust section. Compatible enrichment elements (Low Field Strenght Elements and Light Rare Earth Elements) and chromospinel compositions suggest crustal contamination and a marginal arc basin. The ophiolite was probably emplaced as a dismembered and metamorphosed complex in a roof arc or suprasubduction zone during the Neoproterozoic subduction. © 1997 Asociaciön Geolögica Argentina. 1997 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v52_n3_p275_Mutti http://hdl.handle.net/20.500.12110/paper_00044822_v52_n3_p275_Mutti
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic ophiolite
Paleozoic
Precambrian
Argentina
spellingShingle ophiolite
Paleozoic
Precambrian
Argentina
The dismembered basal ophiolitic sequence from Cordoba province, Argentina
topic_facet ophiolite
Paleozoic
Precambrian
Argentina
description Metamorphosed and folded Precambrian - Paleozoic ultramafic and mafic rocks, exposed in central - west Cordoba Province, define two NNO-SSE to NS belts. Samples were analysed from outcrops on the southern side of the Sierra Grande (Atos Pampa - San Miguel, Los Guanacos, Cerro San Lorenzo and Los Permanentes bodies) and from the central zone of the Sierra Chica (Bosque Alegre and Alla Gracia bodies). These rocks represent mantle tectonites and transitional basal rocks of an ophiolitic complex which were intruded by ultrabasic and basic consanguineous tholeites and plagiogranitic dykes and by later continental granophyres. The ophiolitic basal section is exposed in conformity with metapelites (gneisses and schists), interlayered metabasalts (amphibolites) and metacarbonatic rocks, which represent the upper ophiolitic crust section. Compatible enrichment elements (Low Field Strenght Elements and Light Rare Earth Elements) and chromospinel compositions suggest crustal contamination and a marginal arc basin. The ophiolite was probably emplaced as a dismembered and metamorphosed complex in a roof arc or suprasubduction zone during the Neoproterozoic subduction. © 1997 Asociaciön Geolögica Argentina.
title The dismembered basal ophiolitic sequence from Cordoba province, Argentina
title_short The dismembered basal ophiolitic sequence from Cordoba province, Argentina
title_full The dismembered basal ophiolitic sequence from Cordoba province, Argentina
title_fullStr The dismembered basal ophiolitic sequence from Cordoba province, Argentina
title_full_unstemmed The dismembered basal ophiolitic sequence from Cordoba province, Argentina
title_sort dismembered basal ophiolitic sequence from cordoba province, argentina
publishDate 1997
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v52_n3_p275_Mutti
http://hdl.handle.net/20.500.12110/paper_00044822_v52_n3_p275_Mutti
_version_ 1768545533685661696

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