A multi-proxy study of the Cerro Piche Graben: a Lower Jurassic basin in the central North Patagonian Massif, Argentina
- Autores
- Falco, Juan Ignacio; Hauser, Natalia; Olivera, Daniela Elizabeth; Bodnar, Josefina; Reimold, Wolf Uwe
- Año de publicación
- 2021
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The volcano-sedimentary succession of the Cerro Piche Graben, Río Negro province, Patagonia (Argentina), was studied U-Pb and Lu-Hf in zircon. As well, a stratigraphic, sedimentological, palynology and a review of the paleo flora content was made. The combined stratigraphic and geochronological study on the volcano-sedimentary succession indicates that the Cerro Piche Graben was developed during the Early Jurassic and allow us to propose the Cerro Piche Formation. This formation is composed of a lower volcanic succession (named the Loma Blanca Member) that is restricted to the tectonic depression and that was probably emplaced during the Sinemurian (ca. 191 Ma), and an upper sedimentary succession (named the El Tono Member) that was unconformably deposited over the lower sequence during the Pliensbachian (ca. 183 Ma). The sedimentological study of the upper sequence allows to recognition of nine sedimentary cycles related to the evolution of an alluvial fan. The palynofacies interpretations reflect intermittent exposure to weathering and/or intense reworking of organic components as a result of a dynamic sedimentary system with a high terrestrial input, sediment reworking, and/or intermittent subaerial exposure. The paleoflora preserved in this sedimentary succession is composed exclusively of conifers and assigned to Cupessinoxylon sp., and probably corresponds to an arboreal paleocommunity. The U-Pb data on Early Jurassic detrital zircon grains from the El Tono Member indicate a maximum depositional age (MDA) of 185 Ma for this sequence, and the Lu-Hf data support a reworked continental crust for the zircon source. . Additionally, the U-Pb and Lu-Hf data obtained during this work together with data from the North Patagonian Massif supports the recognition of four magmatic cycles, called C0, C1 (including C1i source), C2 and C3. The C1 (172-180 Ma) and the C3 (155-162 Ma) cycles indicate mixing of juvenile mantle-42 derived and reworked crustal components in the parental magma of zircons and the C0 (182-192 Ma) cycle, which includes the distal volcanism identified in the Cerro Piche Graben, the C1i (172-180 Ma) and C2 (166-169 Ma) cycles seemingly represent three episodes of crustal reworking.
Fil: Falco, Juan Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Diversidad Cultural y Procesos de Cambio. Universidad Nacional de Río Negro. Instituto de Investigaciones en Diversidad Cultural y Procesos de Cambio; Argentina
Fil: Hauser, Natalia. Universidade Do Brasilia. Instituto de Geociencias; Brasil
Fil: Olivera, Daniela Elizabeth. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina. Universidad Nacional del Sur. Departamento de Geología; Argentina
Fil: Bodnar, Josefina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Área Paleobotánica; Argentina
Fil: Reimold, Wolf Uwe. Universidad do Brasilia; Brasil - Materia
-
JURASSIC VOLCANISM
PATAGONIA
U-Pb/Lu-Hf ISOTOPES ON ZIRCON
JURASSIC FLORA
STRATIGRAPHY - Nivel de accesibilidad
- acceso embargado
- 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:11336/147840
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A multi-proxy study of the Cerro Piche Graben: a Lower Jurassic basin in the central North Patagonian Massif, ArgentinaFalco, Juan IgnacioHauser, NataliaOlivera, Daniela ElizabethBodnar, JosefinaReimold, Wolf UweJURASSIC VOLCANISMPATAGONIAU-Pb/Lu-Hf ISOTOPES ON ZIRCONJURASSIC FLORASTRATIGRAPHYhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The volcano-sedimentary succession of the Cerro Piche Graben, Río Negro province, Patagonia (Argentina), was studied U-Pb and Lu-Hf in zircon. As well, a stratigraphic, sedimentological, palynology and a review of the paleo flora content was made. The combined stratigraphic and geochronological study on the volcano-sedimentary succession indicates that the Cerro Piche Graben was developed during the Early Jurassic and allow us to propose the Cerro Piche Formation. This formation is composed of a lower volcanic succession (named the Loma Blanca Member) that is restricted to the tectonic depression and that was probably emplaced during the Sinemurian (ca. 191 Ma), and an upper sedimentary succession (named the El Tono Member) that was unconformably deposited over the lower sequence during the Pliensbachian (ca. 183 Ma). The sedimentological study of the upper sequence allows to recognition of nine sedimentary cycles related to the evolution of an alluvial fan. The palynofacies interpretations reflect intermittent exposure to weathering and/or intense reworking of organic components as a result of a dynamic sedimentary system with a high terrestrial input, sediment reworking, and/or intermittent subaerial exposure. The paleoflora preserved in this sedimentary succession is composed exclusively of conifers and assigned to Cupessinoxylon sp., and probably corresponds to an arboreal paleocommunity. The U-Pb data on Early Jurassic detrital zircon grains from the El Tono Member indicate a maximum depositional age (MDA) of 185 Ma for this sequence, and the Lu-Hf data support a reworked continental crust for the zircon source. . Additionally, the U-Pb and Lu-Hf data obtained during this work together with data from the North Patagonian Massif supports the recognition of four magmatic cycles, called C0, C1 (including C1i source), C2 and C3. The C1 (172-180 Ma) and the C3 (155-162 Ma) cycles indicate mixing of juvenile mantle-42 derived and reworked crustal components in the parental magma of zircons and the C0 (182-192 Ma) cycle, which includes the distal volcanism identified in the Cerro Piche Graben, the C1i (172-180 Ma) and C2 (166-169 Ma) cycles seemingly represent three episodes of crustal reworking.Fil: Falco, Juan Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Diversidad Cultural y Procesos de Cambio. Universidad Nacional de Río Negro. Instituto de Investigaciones en Diversidad Cultural y Procesos de Cambio; ArgentinaFil: Hauser, Natalia. Universidade Do Brasilia. Instituto de Geociencias; BrasilFil: Olivera, Daniela Elizabeth. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina. Universidad Nacional del Sur. Departamento de Geología; ArgentinaFil: Bodnar, Josefina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Área Paleobotánica; ArgentinaFil: Reimold, Wolf Uwe. Universidad do Brasilia; BrasilPergamon-Elsevier Science Ltd2021-08info:eu-repo/date/embargoEnd/2022-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/147840Falco, Juan Ignacio; Hauser, Natalia; Olivera, Daniela Elizabeth; Bodnar, Josefina; Reimold, Wolf Uwe; A multi-proxy study of the Cerro Piche Graben: a Lower Jurassic basin in the central North Patagonian Massif, Argentina; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 109; 8-2021; 1-780895-9811CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0895981121001346info:eu-repo/semantics/embargoedAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:12:19Zoai:ri.conicet.gov.ar:11336/147840instacron: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:34982025-09-29 10:12:19.744CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
A multi-proxy study of the Cerro Piche Graben: a Lower Jurassic basin in the central North Patagonian Massif, Argentina |
title |
A multi-proxy study of the Cerro Piche Graben: a Lower Jurassic basin in the central North Patagonian Massif, Argentina |
spellingShingle |
A multi-proxy study of the Cerro Piche Graben: a Lower Jurassic basin in the central North Patagonian Massif, Argentina Falco, Juan Ignacio JURASSIC VOLCANISM PATAGONIA U-Pb/Lu-Hf ISOTOPES ON ZIRCON JURASSIC FLORA STRATIGRAPHY |
title_short |
A multi-proxy study of the Cerro Piche Graben: a Lower Jurassic basin in the central North Patagonian Massif, Argentina |
title_full |
A multi-proxy study of the Cerro Piche Graben: a Lower Jurassic basin in the central North Patagonian Massif, Argentina |
title_fullStr |
A multi-proxy study of the Cerro Piche Graben: a Lower Jurassic basin in the central North Patagonian Massif, Argentina |
title_full_unstemmed |
A multi-proxy study of the Cerro Piche Graben: a Lower Jurassic basin in the central North Patagonian Massif, Argentina |
title_sort |
A multi-proxy study of the Cerro Piche Graben: a Lower Jurassic basin in the central North Patagonian Massif, Argentina |
dc.creator.none.fl_str_mv |
Falco, Juan Ignacio Hauser, Natalia Olivera, Daniela Elizabeth Bodnar, Josefina Reimold, Wolf Uwe |
author |
Falco, Juan Ignacio |
author_facet |
Falco, Juan Ignacio Hauser, Natalia Olivera, Daniela Elizabeth Bodnar, Josefina Reimold, Wolf Uwe |
author_role |
author |
author2 |
Hauser, Natalia Olivera, Daniela Elizabeth Bodnar, Josefina Reimold, Wolf Uwe |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
JURASSIC VOLCANISM PATAGONIA U-Pb/Lu-Hf ISOTOPES ON ZIRCON JURASSIC FLORA STRATIGRAPHY |
topic |
JURASSIC VOLCANISM PATAGONIA U-Pb/Lu-Hf ISOTOPES ON ZIRCON JURASSIC FLORA STRATIGRAPHY |
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 volcano-sedimentary succession of the Cerro Piche Graben, Río Negro province, Patagonia (Argentina), was studied U-Pb and Lu-Hf in zircon. As well, a stratigraphic, sedimentological, palynology and a review of the paleo flora content was made. The combined stratigraphic and geochronological study on the volcano-sedimentary succession indicates that the Cerro Piche Graben was developed during the Early Jurassic and allow us to propose the Cerro Piche Formation. This formation is composed of a lower volcanic succession (named the Loma Blanca Member) that is restricted to the tectonic depression and that was probably emplaced during the Sinemurian (ca. 191 Ma), and an upper sedimentary succession (named the El Tono Member) that was unconformably deposited over the lower sequence during the Pliensbachian (ca. 183 Ma). The sedimentological study of the upper sequence allows to recognition of nine sedimentary cycles related to the evolution of an alluvial fan. The palynofacies interpretations reflect intermittent exposure to weathering and/or intense reworking of organic components as a result of a dynamic sedimentary system with a high terrestrial input, sediment reworking, and/or intermittent subaerial exposure. The paleoflora preserved in this sedimentary succession is composed exclusively of conifers and assigned to Cupessinoxylon sp., and probably corresponds to an arboreal paleocommunity. The U-Pb data on Early Jurassic detrital zircon grains from the El Tono Member indicate a maximum depositional age (MDA) of 185 Ma for this sequence, and the Lu-Hf data support a reworked continental crust for the zircon source. . Additionally, the U-Pb and Lu-Hf data obtained during this work together with data from the North Patagonian Massif supports the recognition of four magmatic cycles, called C0, C1 (including C1i source), C2 and C3. The C1 (172-180 Ma) and the C3 (155-162 Ma) cycles indicate mixing of juvenile mantle-42 derived and reworked crustal components in the parental magma of zircons and the C0 (182-192 Ma) cycle, which includes the distal volcanism identified in the Cerro Piche Graben, the C1i (172-180 Ma) and C2 (166-169 Ma) cycles seemingly represent three episodes of crustal reworking. Fil: Falco, Juan Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Diversidad Cultural y Procesos de Cambio. Universidad Nacional de Río Negro. Instituto de Investigaciones en Diversidad Cultural y Procesos de Cambio; Argentina Fil: Hauser, Natalia. Universidade Do Brasilia. Instituto de Geociencias; Brasil Fil: Olivera, Daniela Elizabeth. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina. Universidad Nacional del Sur. Departamento de Geología; Argentina Fil: Bodnar, Josefina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Área Paleobotánica; Argentina Fil: Reimold, Wolf Uwe. Universidad do Brasilia; Brasil |
description |
The volcano-sedimentary succession of the Cerro Piche Graben, Río Negro province, Patagonia (Argentina), was studied U-Pb and Lu-Hf in zircon. As well, a stratigraphic, sedimentological, palynology and a review of the paleo flora content was made. The combined stratigraphic and geochronological study on the volcano-sedimentary succession indicates that the Cerro Piche Graben was developed during the Early Jurassic and allow us to propose the Cerro Piche Formation. This formation is composed of a lower volcanic succession (named the Loma Blanca Member) that is restricted to the tectonic depression and that was probably emplaced during the Sinemurian (ca. 191 Ma), and an upper sedimentary succession (named the El Tono Member) that was unconformably deposited over the lower sequence during the Pliensbachian (ca. 183 Ma). The sedimentological study of the upper sequence allows to recognition of nine sedimentary cycles related to the evolution of an alluvial fan. The palynofacies interpretations reflect intermittent exposure to weathering and/or intense reworking of organic components as a result of a dynamic sedimentary system with a high terrestrial input, sediment reworking, and/or intermittent subaerial exposure. The paleoflora preserved in this sedimentary succession is composed exclusively of conifers and assigned to Cupessinoxylon sp., and probably corresponds to an arboreal paleocommunity. The U-Pb data on Early Jurassic detrital zircon grains from the El Tono Member indicate a maximum depositional age (MDA) of 185 Ma for this sequence, and the Lu-Hf data support a reworked continental crust for the zircon source. . Additionally, the U-Pb and Lu-Hf data obtained during this work together with data from the North Patagonian Massif supports the recognition of four magmatic cycles, called C0, C1 (including C1i source), C2 and C3. The C1 (172-180 Ma) and the C3 (155-162 Ma) cycles indicate mixing of juvenile mantle-42 derived and reworked crustal components in the parental magma of zircons and the C0 (182-192 Ma) cycle, which includes the distal volcanism identified in the Cerro Piche Graben, the C1i (172-180 Ma) and C2 (166-169 Ma) cycles seemingly represent three episodes of crustal reworking. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-08 info:eu-repo/date/embargoEnd/2022-02-01 |
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/11336/147840 Falco, Juan Ignacio; Hauser, Natalia; Olivera, Daniela Elizabeth; Bodnar, Josefina; Reimold, Wolf Uwe; A multi-proxy study of the Cerro Piche Graben: a Lower Jurassic basin in the central North Patagonian Massif, Argentina; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 109; 8-2021; 1-78 0895-9811 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/147840 |
identifier_str_mv |
Falco, Juan Ignacio; Hauser, Natalia; Olivera, Daniela Elizabeth; Bodnar, Josefina; Reimold, Wolf Uwe; A multi-proxy study of the Cerro Piche Graben: a Lower Jurassic basin in the central North Patagonian Massif, Argentina; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 109; 8-2021; 1-78 0895-9811 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0895981121001346 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/embargoedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
embargoedAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Pergamon-Elsevier Science Ltd |
publisher.none.fl_str_mv |
Pergamon-Elsevier Science Ltd |
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) |
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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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13.070432 |