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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/43860
Ver los metadatos del registro completo
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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 Técnicas2025-10-22T11:58:54Zoai: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:34982025-10-22 11:58:54.59CONICET 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 |
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1846782305856651264 |
score |
13.238319 |