Growth of the Patagonian Andes since the Mid Jurassic to the Present
- Autores
- Folguera Telichevsky, Andres; Gianni, Guido Martin; Navarrete, Cesar; Echaurren Gonzalez, Andres; Orts, Darío Leandro; Fernández Paz, Lucía; Iannelli, Sofía; Litvak, Vanesa Dafne; Encinas, Alfonso
- Año de publicación
- 2018
- Idioma
- inglés
- Tipo de recurso
- documento de conferencia
- Estado
- versión publicada
- Descripción
- The Patagonian Andes have been constructed through several deformational stages. Thus, Jurassic within plate contractional systems has alternated with periods of extension associated with the emplacement of the Karoo-Ferrar LIP producing proto- Andean mountain systems. These deformations are explained by a particular deformational field imposed by the southward displacement of South America, the Weddell sea opening and mechanical weakening imposed by the hotspot activity. This chaotic system is replaced at the Early Cretaceous by an intra- back-arc extensional system that is inverted in the late Early Cretaceous producing a first integrated foreland basin and a broad fold and thrust belt. This exceptional development of the fold and thrust belt coincides with the eastward advance of the arc activity which is interpreted in terms of a shallow subducted slab configuration associated with a stable seismic ridge impacting at the Patagonian trench. These Cretaceous contractional structures are affected by Eocene deformations that are variable in mechanics depending on the latitude: While some segments of the fold and thrust belt are extensionally reactivated, others are contractionally reactivated. This variable behavior is interpreted as due to the oblique collision of a seismic ridge from north to south that produced slab windows alternated with segments where transform segments collided. Latest Eocene to Oligocene tectonics is characterized by widespread extension with back- and intra-arc basins and the outstanding detachment of Los Chonos fore-arc sliver. This extensional stage ends at the earliest Miocene with Atlantic and Pacific-derived transgressions that could be interpreted in terms of thermal subsidence and/or dynamic subsidence in a context of the steepening of the Nazca subducted slab. The Chonos fore-arc block accretes in early Miocene times producing a broad fold and thrust belt that reaches Central Patagonia in mid-Miocene times. This process is accompanied by mild east-ward arc migrations at the edges of the Chonos accretion zone interpreted as subducted slab shallowing. Late Miocene deformation is focused on out-of-sequence thrusts that produce the rain shadow conditions that characterize Patagonia producing strong biota changes. Mild Quaternary reactivations of the Miocene systems are the late expression of this uplift.
Fil: Folguera Telichevsky, Andres. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Gianni, Guido Martin. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Navarrete, Cesar. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
Fil: Echaurren Gonzalez, Andres. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Orts, Darío Leandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina
Fil: Fernández Paz, Lucía. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Iannelli, Sofía. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Litvak, Vanesa Dafne. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Encinas, Alfonso. Universidad de Concepción. Facultad de Ciencias Naturales y Oceanografía; Chile
XV Congreso Geológico Chileno
Concepción
Chile
Universidad de Concepción
Colegio de Geólogos de Chile
Sociedad Geológica de Chile - Materia
-
Andes
structure
uplift
basin - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/228866
Ver los metadatos del registro completo
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Growth of the Patagonian Andes since the Mid Jurassic to the PresentFolguera Telichevsky, AndresGianni, Guido MartinNavarrete, CesarEchaurren Gonzalez, AndresOrts, Darío LeandroFernández Paz, LucíaIannelli, SofíaLitvak, Vanesa DafneEncinas, AlfonsoAndesstructureupliftbasinhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Patagonian Andes have been constructed through several deformational stages. Thus, Jurassic within plate contractional systems has alternated with periods of extension associated with the emplacement of the Karoo-Ferrar LIP producing proto- Andean mountain systems. These deformations are explained by a particular deformational field imposed by the southward displacement of South America, the Weddell sea opening and mechanical weakening imposed by the hotspot activity. This chaotic system is replaced at the Early Cretaceous by an intra- back-arc extensional system that is inverted in the late Early Cretaceous producing a first integrated foreland basin and a broad fold and thrust belt. This exceptional development of the fold and thrust belt coincides with the eastward advance of the arc activity which is interpreted in terms of a shallow subducted slab configuration associated with a stable seismic ridge impacting at the Patagonian trench. These Cretaceous contractional structures are affected by Eocene deformations that are variable in mechanics depending on the latitude: While some segments of the fold and thrust belt are extensionally reactivated, others are contractionally reactivated. This variable behavior is interpreted as due to the oblique collision of a seismic ridge from north to south that produced slab windows alternated with segments where transform segments collided. Latest Eocene to Oligocene tectonics is characterized by widespread extension with back- and intra-arc basins and the outstanding detachment of Los Chonos fore-arc sliver. This extensional stage ends at the earliest Miocene with Atlantic and Pacific-derived transgressions that could be interpreted in terms of thermal subsidence and/or dynamic subsidence in a context of the steepening of the Nazca subducted slab. The Chonos fore-arc block accretes in early Miocene times producing a broad fold and thrust belt that reaches Central Patagonia in mid-Miocene times. This process is accompanied by mild east-ward arc migrations at the edges of the Chonos accretion zone interpreted as subducted slab shallowing. Late Miocene deformation is focused on out-of-sequence thrusts that produce the rain shadow conditions that characterize Patagonia producing strong biota changes. Mild Quaternary reactivations of the Miocene systems are the late expression of this uplift.Fil: Folguera Telichevsky, Andres. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Gianni, Guido Martin. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Navarrete, Cesar. Universidad Nacional de la Patagonia "San Juan Bosco"; ArgentinaFil: Echaurren Gonzalez, Andres. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Orts, Darío Leandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; ArgentinaFil: Fernández Paz, Lucía. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Iannelli, Sofía. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Litvak, Vanesa Dafne. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Encinas, Alfonso. Universidad de Concepción. Facultad de Ciencias Naturales y Oceanografía; ChileXV Congreso Geológico ChilenoConcepciónChileUniversidad de ConcepciónColegio de Geólogos de ChileSociedad Geológica de ChileUniversidad de Concepción2018info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectCongresoBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/228866Growth of the Patagonian Andes since the Mid Jurassic to the Present; XV Congreso Geológico Chileno; Concepción; Chile; 2018; 1-1CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://congresogeologicochileno.cl/wp-content/uploads/2018/12/Libro-de-Actas-XVCongresoGeologicoChileno2018-2.pdfInternacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:45:21Zoai:ri.conicet.gov.ar:11336/228866instacron: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:34982025-09-03 09:45:22.222CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
Growth of the Patagonian Andes since the Mid Jurassic to the Present |
| title |
Growth of the Patagonian Andes since the Mid Jurassic to the Present |
| spellingShingle |
Growth of the Patagonian Andes since the Mid Jurassic to the Present Folguera Telichevsky, Andres Andes structure uplift basin |
| title_short |
Growth of the Patagonian Andes since the Mid Jurassic to the Present |
| title_full |
Growth of the Patagonian Andes since the Mid Jurassic to the Present |
| title_fullStr |
Growth of the Patagonian Andes since the Mid Jurassic to the Present |
| title_full_unstemmed |
Growth of the Patagonian Andes since the Mid Jurassic to the Present |
| title_sort |
Growth of the Patagonian Andes since the Mid Jurassic to the Present |
| dc.creator.none.fl_str_mv |
Folguera Telichevsky, Andres Gianni, Guido Martin Navarrete, Cesar Echaurren Gonzalez, Andres Orts, Darío Leandro Fernández Paz, Lucía Iannelli, Sofía Litvak, Vanesa Dafne Encinas, Alfonso |
| author |
Folguera Telichevsky, Andres |
| author_facet |
Folguera Telichevsky, Andres Gianni, Guido Martin Navarrete, Cesar Echaurren Gonzalez, Andres Orts, Darío Leandro Fernández Paz, Lucía Iannelli, Sofía Litvak, Vanesa Dafne Encinas, Alfonso |
| author_role |
author |
| author2 |
Gianni, Guido Martin Navarrete, Cesar Echaurren Gonzalez, Andres Orts, Darío Leandro Fernández Paz, Lucía Iannelli, Sofía Litvak, Vanesa Dafne Encinas, Alfonso |
| author2_role |
author author author author author author author author |
| dc.subject.none.fl_str_mv |
Andes structure uplift basin |
| topic |
Andes structure uplift basin |
| 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 Patagonian Andes have been constructed through several deformational stages. Thus, Jurassic within plate contractional systems has alternated with periods of extension associated with the emplacement of the Karoo-Ferrar LIP producing proto- Andean mountain systems. These deformations are explained by a particular deformational field imposed by the southward displacement of South America, the Weddell sea opening and mechanical weakening imposed by the hotspot activity. This chaotic system is replaced at the Early Cretaceous by an intra- back-arc extensional system that is inverted in the late Early Cretaceous producing a first integrated foreland basin and a broad fold and thrust belt. This exceptional development of the fold and thrust belt coincides with the eastward advance of the arc activity which is interpreted in terms of a shallow subducted slab configuration associated with a stable seismic ridge impacting at the Patagonian trench. These Cretaceous contractional structures are affected by Eocene deformations that are variable in mechanics depending on the latitude: While some segments of the fold and thrust belt are extensionally reactivated, others are contractionally reactivated. This variable behavior is interpreted as due to the oblique collision of a seismic ridge from north to south that produced slab windows alternated with segments where transform segments collided. Latest Eocene to Oligocene tectonics is characterized by widespread extension with back- and intra-arc basins and the outstanding detachment of Los Chonos fore-arc sliver. This extensional stage ends at the earliest Miocene with Atlantic and Pacific-derived transgressions that could be interpreted in terms of thermal subsidence and/or dynamic subsidence in a context of the steepening of the Nazca subducted slab. The Chonos fore-arc block accretes in early Miocene times producing a broad fold and thrust belt that reaches Central Patagonia in mid-Miocene times. This process is accompanied by mild east-ward arc migrations at the edges of the Chonos accretion zone interpreted as subducted slab shallowing. Late Miocene deformation is focused on out-of-sequence thrusts that produce the rain shadow conditions that characterize Patagonia producing strong biota changes. Mild Quaternary reactivations of the Miocene systems are the late expression of this uplift. Fil: Folguera Telichevsky, Andres. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina Fil: Gianni, Guido Martin. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina Fil: Navarrete, Cesar. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina Fil: Echaurren Gonzalez, Andres. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina Fil: Orts, Darío Leandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina Fil: Fernández Paz, Lucía. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina Fil: Iannelli, Sofía. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina Fil: Litvak, Vanesa Dafne. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina Fil: Encinas, Alfonso. Universidad de Concepción. Facultad de Ciencias Naturales y Oceanografía; Chile XV Congreso Geológico Chileno Concepción Chile Universidad de Concepción Colegio de Geólogos de Chile Sociedad Geológica de Chile |
| description |
The Patagonian Andes have been constructed through several deformational stages. Thus, Jurassic within plate contractional systems has alternated with periods of extension associated with the emplacement of the Karoo-Ferrar LIP producing proto- Andean mountain systems. These deformations are explained by a particular deformational field imposed by the southward displacement of South America, the Weddell sea opening and mechanical weakening imposed by the hotspot activity. This chaotic system is replaced at the Early Cretaceous by an intra- back-arc extensional system that is inverted in the late Early Cretaceous producing a first integrated foreland basin and a broad fold and thrust belt. This exceptional development of the fold and thrust belt coincides with the eastward advance of the arc activity which is interpreted in terms of a shallow subducted slab configuration associated with a stable seismic ridge impacting at the Patagonian trench. These Cretaceous contractional structures are affected by Eocene deformations that are variable in mechanics depending on the latitude: While some segments of the fold and thrust belt are extensionally reactivated, others are contractionally reactivated. This variable behavior is interpreted as due to the oblique collision of a seismic ridge from north to south that produced slab windows alternated with segments where transform segments collided. Latest Eocene to Oligocene tectonics is characterized by widespread extension with back- and intra-arc basins and the outstanding detachment of Los Chonos fore-arc sliver. This extensional stage ends at the earliest Miocene with Atlantic and Pacific-derived transgressions that could be interpreted in terms of thermal subsidence and/or dynamic subsidence in a context of the steepening of the Nazca subducted slab. The Chonos fore-arc block accretes in early Miocene times producing a broad fold and thrust belt that reaches Central Patagonia in mid-Miocene times. This process is accompanied by mild east-ward arc migrations at the edges of the Chonos accretion zone interpreted as subducted slab shallowing. Late Miocene deformation is focused on out-of-sequence thrusts that produce the rain shadow conditions that characterize Patagonia producing strong biota changes. Mild Quaternary reactivations of the Miocene systems are the late expression of this uplift. |
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Growth of the Patagonian Andes since the Mid Jurassic to the Present; XV Congreso Geológico Chileno; Concepción; Chile; 2018; 1-1 CONICET Digital CONICET |
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