The Difunta Correa Metasedimentary Sequence (NW Argentina): relict of a Neoproterozoic platform? elemental and Sr-Nd isotope evidence

Autores
Ramacciotti, Carlos Dino; Casquet, César; Baldo, Edgardo Gaspar Agustín; Galindo, Carmen
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Sierra de Pie de Palo (Western Sierras Pampeanas, Argentina)in the Andean foreland is mainly formed by a Mesoproterozoic basementand an Ediacaran metasedimentary cover referred to as theDifunta Correa metasedimentary sequence. The latter is key to understandingthe characteristics of this region prior to the early Cambrianassembly of SW Gondwana. It is composed of low- to medium grademetamorphic rocks (metasandstones, mica-schists, Ca-pelitic schists,metaconglomerates, marbles and less abundant amphibolites) that canbe grouped into four informal lithostratigraphic units. The chemicalcomposition of these rocks allows to classify the siliciclastic protolithsas shales, Fe-shales and immature sandstones (wackes, sub-litharenites,litharenites and Fe-sandstones). The sediments were derived from anevolved felsic to intermediate continental source and were depositedon a continental passive margin overlaying a Mesoproterozoic basementthat crops out at several places of the Western Sierras Pampeanas.Thick marine carbonate beds with seawater isotope composition,phosphatic clasts and the lack of contemporaneous, arc related igneousrocks, also support a passive margin sedimentation. Phosphaticclasts within metaconglomerates are described for the first time inthe Sierras Pampeanas and were probably formed after an importantNeoproterozoic glaciation (Marinoan). We further suggest, based onour data and previous works, that the passive margin probably belongedto the Paleoproterozoic MARA (acronym of Maz, Arequipa, Río Apa)continental block. MARA, which remained juxtaposed to Laurentiasince the middle to late Mesoproterozoic orogenies until its eventualdrifting in the late Neoproterozoic, finally accreted to SW Gondwanain early Cambrian times during the Pampean orogeny.
Fil: Ramacciotti, Carlos Dino. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Fil: Casquet, César. Universidad Complutense de Madrid. Instituto de Geociencias; España
Fil: Baldo, Edgardo Gaspar Agustín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Fil: Galindo, Carmen. Universidad Complutense de Madrid. Instituto de Geociencias; España
Materia
GEOCHEMISTRY OF METASEDIMENTARY
NEOPROTEROZOIC
WESTERN SIERRAS PAMPEANAS
PHOSPHATIC CLASTS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/43860
Acceder
id CONICETDig_9cf96dbbafa8d2726c5857923fc4a665
oai_identifier_str oai:ri.conicet.gov.ar:11336/43860
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling The Difunta Correa Metasedimentary Sequence (NW Argentina): relict of a Neoproterozoic platform? elemental and Sr-Nd isotope evidenceRamacciotti, Carlos DinoCasquet, CésarBaldo, Edgardo Gaspar AgustínGalindo, CarmenGEOCHEMISTRY OF METASEDIMENTARYNEOPROTEROZOICWESTERN SIERRAS PAMPEANASPHOSPHATIC CLASTShttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Sierra de Pie de Palo (Western Sierras Pampeanas, Argentina)in the Andean foreland is mainly formed by a Mesoproterozoic basementand an Ediacaran metasedimentary cover referred to as theDifunta Correa metasedimentary sequence. The latter is key to understandingthe characteristics of this region prior to the early Cambrianassembly of SW Gondwana. It is composed of low- to medium grademetamorphic rocks (metasandstones, mica-schists, Ca-pelitic schists,metaconglomerates, marbles and less abundant amphibolites) that canbe grouped into four informal lithostratigraphic units. The chemicalcomposition of these rocks allows to classify the siliciclastic protolithsas shales, Fe-shales and immature sandstones (wackes, sub-litharenites,litharenites and Fe-sandstones). The sediments were derived from anevolved felsic to intermediate continental source and were depositedon a continental passive margin overlaying a Mesoproterozoic basementthat crops out at several places of the Western Sierras Pampeanas.Thick marine carbonate beds with seawater isotope composition,phosphatic clasts and the lack of contemporaneous, arc related igneousrocks, also support a passive margin sedimentation. Phosphaticclasts within metaconglomerates are described for the first time inthe Sierras Pampeanas and were probably formed after an importantNeoproterozoic glaciation (Marinoan). We further suggest, based onour data and previous works, that the passive margin probably belongedto the Paleoproterozoic MARA (acronym of Maz, Arequipa, Río Apa)continental block. MARA, which remained juxtaposed to Laurentiasince the middle to late Mesoproterozoic orogenies until its eventualdrifting in the late Neoproterozoic, finally accreted to SW Gondwanain early Cambrian times during the Pampean orogeny.Fil: Ramacciotti, Carlos Dino. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaFil: Casquet, César. Universidad Complutense de Madrid. Instituto de Geociencias; EspañaFil: Baldo, Edgardo Gaspar Agustín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaFil: Galindo, Carmen. Universidad Complutense de Madrid. Instituto de Geociencias; EspañaUniversidad Nacional Autónoma de México. Centro de Geociencias2015-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/43860Ramacciotti, Carlos Dino; Casquet, César; Baldo, Edgardo Gaspar Agustín; Galindo, Carmen; The Difunta Correa Metasedimentary Sequence (NW Argentina): relict of a Neoproterozoic platform? elemental and Sr-Nd isotope evidence; Universidad Nacional Autónoma de México. Centro de Geociencias; Revista Mexicana de Ciencias Geológicas; 32; 3; 11-2015; 395-4141026-8774CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.scielo.org.mx/scielo.php?script=sci_abstract&pid=S1026-87742015000300395&lng=es&nrm=iso&tlng=eninfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:23:20Zoai:ri.conicet.gov.ar:11336/43860instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 15:23:21.01CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The Difunta Correa Metasedimentary Sequence (NW Argentina): relict of a Neoproterozoic platform? elemental and Sr-Nd isotope evidence
title The Difunta Correa Metasedimentary Sequence (NW Argentina): relict of a Neoproterozoic platform? elemental and Sr-Nd isotope evidence
spellingShingle The Difunta Correa Metasedimentary Sequence (NW Argentina): relict of a Neoproterozoic platform? elemental and Sr-Nd isotope evidence
Ramacciotti, Carlos Dino
GEOCHEMISTRY OF METASEDIMENTARY
NEOPROTEROZOIC
WESTERN SIERRAS PAMPEANAS
PHOSPHATIC CLASTS
title_short The Difunta Correa Metasedimentary Sequence (NW Argentina): relict of a Neoproterozoic platform? elemental and Sr-Nd isotope evidence
title_full The Difunta Correa Metasedimentary Sequence (NW Argentina): relict of a Neoproterozoic platform? elemental and Sr-Nd isotope evidence
title_fullStr The Difunta Correa Metasedimentary Sequence (NW Argentina): relict of a Neoproterozoic platform? elemental and Sr-Nd isotope evidence
title_full_unstemmed The Difunta Correa Metasedimentary Sequence (NW Argentina): relict of a Neoproterozoic platform? elemental and Sr-Nd isotope evidence
title_sort The Difunta Correa Metasedimentary Sequence (NW Argentina): relict of a Neoproterozoic platform? elemental and Sr-Nd isotope evidence
dc.creator.none.fl_str_mv Ramacciotti, Carlos Dino
Casquet, César
Baldo, Edgardo Gaspar Agustín
Galindo, Carmen
author Ramacciotti, Carlos Dino
author_facet Ramacciotti, Carlos Dino
Casquet, César
Baldo, Edgardo Gaspar Agustín
Galindo, Carmen
author_role author
author2 Casquet, César
Baldo, Edgardo Gaspar Agustín
Galindo, Carmen
author2_role author
author
author
dc.subject.none.fl_str_mv GEOCHEMISTRY OF METASEDIMENTARY
NEOPROTEROZOIC
WESTERN SIERRAS PAMPEANAS
PHOSPHATIC CLASTS
topic GEOCHEMISTRY OF METASEDIMENTARY
NEOPROTEROZOIC
WESTERN SIERRAS PAMPEANAS
PHOSPHATIC CLASTS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The Sierra de Pie de Palo (Western Sierras Pampeanas, Argentina)in the Andean foreland is mainly formed by a Mesoproterozoic basementand an Ediacaran metasedimentary cover referred to as theDifunta Correa metasedimentary sequence. The latter is key to understandingthe characteristics of this region prior to the early Cambrianassembly of SW Gondwana. It is composed of low- to medium grademetamorphic rocks (metasandstones, mica-schists, Ca-pelitic schists,metaconglomerates, marbles and less abundant amphibolites) that canbe grouped into four informal lithostratigraphic units. The chemicalcomposition of these rocks allows to classify the siliciclastic protolithsas shales, Fe-shales and immature sandstones (wackes, sub-litharenites,litharenites and Fe-sandstones). The sediments were derived from anevolved felsic to intermediate continental source and were depositedon a continental passive margin overlaying a Mesoproterozoic basementthat crops out at several places of the Western Sierras Pampeanas.Thick marine carbonate beds with seawater isotope composition,phosphatic clasts and the lack of contemporaneous, arc related igneousrocks, also support a passive margin sedimentation. Phosphaticclasts within metaconglomerates are described for the first time inthe Sierras Pampeanas and were probably formed after an importantNeoproterozoic glaciation (Marinoan). We further suggest, based onour data and previous works, that the passive margin probably belongedto the Paleoproterozoic MARA (acronym of Maz, Arequipa, Río Apa)continental block. MARA, which remained juxtaposed to Laurentiasince the middle to late Mesoproterozoic orogenies until its eventualdrifting in the late Neoproterozoic, finally accreted to SW Gondwanain early Cambrian times during the Pampean orogeny.
Fil: Ramacciotti, Carlos Dino. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Fil: Casquet, César. Universidad Complutense de Madrid. Instituto de Geociencias; España
Fil: Baldo, Edgardo Gaspar Agustín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Fil: Galindo, Carmen. Universidad Complutense de Madrid. Instituto de Geociencias; España
description The Sierra de Pie de Palo (Western Sierras Pampeanas, Argentina)in the Andean foreland is mainly formed by a Mesoproterozoic basementand an Ediacaran metasedimentary cover referred to as theDifunta Correa metasedimentary sequence. The latter is key to understandingthe characteristics of this region prior to the early Cambrianassembly of SW Gondwana. It is composed of low- to medium grademetamorphic rocks (metasandstones, mica-schists, Ca-pelitic schists,metaconglomerates, marbles and less abundant amphibolites) that canbe grouped into four informal lithostratigraphic units. The chemicalcomposition of these rocks allows to classify the siliciclastic protolithsas shales, Fe-shales and immature sandstones (wackes, sub-litharenites,litharenites and Fe-sandstones). The sediments were derived from anevolved felsic to intermediate continental source and were depositedon a continental passive margin overlaying a Mesoproterozoic basementthat crops out at several places of the Western Sierras Pampeanas.Thick marine carbonate beds with seawater isotope composition,phosphatic clasts and the lack of contemporaneous, arc related igneousrocks, also support a passive margin sedimentation. Phosphaticclasts within metaconglomerates are described for the first time inthe Sierras Pampeanas and were probably formed after an importantNeoproterozoic glaciation (Marinoan). We further suggest, based onour data and previous works, that the passive margin probably belongedto the Paleoproterozoic MARA (acronym of Maz, Arequipa, Río Apa)continental block. MARA, which remained juxtaposed to Laurentiasince the middle to late Mesoproterozoic orogenies until its eventualdrifting in the late Neoproterozoic, finally accreted to SW Gondwanain early Cambrian times during the Pampean orogeny.
publishDate 2015
dc.date.none.fl_str_mv 2015-11
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/43860
Ramacciotti, Carlos Dino; Casquet, César; Baldo, Edgardo Gaspar Agustín; Galindo, Carmen; The Difunta Correa Metasedimentary Sequence (NW Argentina): relict of a Neoproterozoic platform? elemental and Sr-Nd isotope evidence; Universidad Nacional Autónoma de México. Centro de Geociencias; Revista Mexicana de Ciencias Geológicas; 32; 3; 11-2015; 395-414
1026-8774
CONICET Digital
CONICET
url http://hdl.handle.net/11336/43860
identifier_str_mv Ramacciotti, Carlos Dino; Casquet, César; Baldo, Edgardo Gaspar Agustín; Galindo, Carmen; The Difunta Correa Metasedimentary Sequence (NW Argentina): relict of a Neoproterozoic platform? elemental and Sr-Nd isotope evidence; Universidad Nacional Autónoma de México. Centro de Geociencias; Revista Mexicana de Ciencias Geológicas; 32; 3; 11-2015; 395-414
1026-8774
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.scielo.org.mx/scielo.php?script=sci_abstract&pid=S1026-87742015000300395&lng=es&nrm=iso&tlng=en
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Universidad Nacional Autónoma de México. Centro de Geociencias
publisher.none.fl_str_mv Universidad Nacional Autónoma de México. Centro de Geociencias
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1846083380228128768
score 13.22299

Publicaciones similares