Triassic to Middle Jurassic geodynamic evolution of southwestern Gondwana: From a large flat-slab to mantle plume suction in a rollback subduction setting
A novel geodynamic evolution model of the southwestern region of Gondwana from the late Triassic to the middle Jurassic period is proposed in this contribution, based on new data collected in the Patagonian region and an exhaustive bibliographic review. New geochemical data of La Leona Fm. (Deseado...
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ftconicet:oai:ri.conicet.gov.ar:11336/119062 2023-10-09T21:47:16+02:00 Triassic to Middle Jurassic geodynamic evolution of southwestern Gondwana: From a large flat-slab to mantle plume suction in a rollback subduction setting Navarrete Granzotto, César Rodrigo Gianni, Guido Martin Encinas, A. Marquez, Marcelo Jose Kamerbeek, Constanza Belén Valle, Mauro Nicolás Folguera, A. application/pdf http://hdl.handle.net/11336/119062 eng eng Elsevier Science info:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S0012825219301655 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.earscirev.2019.05.002 http://hdl.handle.net/11336/119062 Navarrete Granzotto, César Rodrigo; Gianni, Guido Martin; Encinas, A.; Marquez, Marcelo Jose; Kamerbeek, Constanza Belén; et al.; Triassic to Middle Jurassic geodynamic evolution of southwestern Gondwana: From a large flat-slab to mantle plume suction in a rollback subduction setting; Elsevier Science; Earth-science Reviews; 194; 7-2019; 125-159 0012-8252 CONICET Digital CONICET info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ FLAT-SLAB SUBDUCTION MANTLE PLUME SUCTION PATAGONIA ROLLBACK SOUTHWESTERN GONDWANA TRIASSIC-JURASSIC MAGMATISM UPPER TRIASSIC https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1016/j.earscirev.2019.05.002 2023-09-24T19:14:33Z A novel geodynamic evolution model of the southwestern region of Gondwana from the late Triassic to the middle Jurassic period is proposed in this contribution, based on new data collected in the Patagonian region and an exhaustive bibliographic review. New geochemical data of La Leona Fm. (Deseado Massif) and a new zircon U/Pb age (207.6 + 4.1/−2.3 Ma), added to a compilation of previous geochronological and geochemical data, allow confirming the existence of an Upper Triassic magmatic arc in central Patagonia, with typical adakitic features. This volcanic arc developed about ~1000?1100 km away from the hypothetical paleo-trench (at its most distal portion) in and intraplate position. New geological mapping carried out in the surrounding areas of these arc-related products allowed recognizing an important and previously underestimated late Triassic contractional episode that affected the south-central Patagonian region, which can be correlated with multiple events of deformation in southwestern Gondwana as far as in the Cape and Sierra de la Ventana fold belts. After this contractional episode, the Jurassic Chon Aike Silicic Large Igneous Province (SLIP - Deseado Massif and North Patagonian Massif) outbursts from a crustal source linked to a mantle thermal anomaly, as new geochemical data and previous data indicate. New and previous structural, geochemical, and geochronological data allow us to propose the existence of a late Triassic-earliest early Jurassic flat-slab episode (~227?190? Ma), here referred to as the South Gondwanian flat-slab, comparable in size with the largest present and previously documented flat-slab configurations on Earth. This event would have been responsible for the inland arc migration, from a western position on the Antarctic Peninsula to central Patagonia (Central Patagonian Batholith), as well as the widespread contractional pulse registered in southwestern Gondwana. The existence of this late Triassic shallow subduction episode is reinforced by a combination of P-wave seismic ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Antarctic The Antarctic Antarctic Peninsula Patagonia Earth-Science Reviews 194 125 159 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
FLAT-SLAB SUBDUCTION MANTLE PLUME SUCTION PATAGONIA ROLLBACK SOUTHWESTERN GONDWANA TRIASSIC-JURASSIC MAGMATISM UPPER TRIASSIC https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
spellingShingle |
FLAT-SLAB SUBDUCTION MANTLE PLUME SUCTION PATAGONIA ROLLBACK SOUTHWESTERN GONDWANA TRIASSIC-JURASSIC MAGMATISM UPPER TRIASSIC https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 Navarrete Granzotto, César Rodrigo Gianni, Guido Martin Encinas, A. Marquez, Marcelo Jose Kamerbeek, Constanza Belén Valle, Mauro Nicolás Folguera, A. Triassic to Middle Jurassic geodynamic evolution of southwestern Gondwana: From a large flat-slab to mantle plume suction in a rollback subduction setting |
topic_facet |
FLAT-SLAB SUBDUCTION MANTLE PLUME SUCTION PATAGONIA ROLLBACK SOUTHWESTERN GONDWANA TRIASSIC-JURASSIC MAGMATISM UPPER TRIASSIC https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
description |
A novel geodynamic evolution model of the southwestern region of Gondwana from the late Triassic to the middle Jurassic period is proposed in this contribution, based on new data collected in the Patagonian region and an exhaustive bibliographic review. New geochemical data of La Leona Fm. (Deseado Massif) and a new zircon U/Pb age (207.6 + 4.1/−2.3 Ma), added to a compilation of previous geochronological and geochemical data, allow confirming the existence of an Upper Triassic magmatic arc in central Patagonia, with typical adakitic features. This volcanic arc developed about ~1000?1100 km away from the hypothetical paleo-trench (at its most distal portion) in and intraplate position. New geological mapping carried out in the surrounding areas of these arc-related products allowed recognizing an important and previously underestimated late Triassic contractional episode that affected the south-central Patagonian region, which can be correlated with multiple events of deformation in southwestern Gondwana as far as in the Cape and Sierra de la Ventana fold belts. After this contractional episode, the Jurassic Chon Aike Silicic Large Igneous Province (SLIP - Deseado Massif and North Patagonian Massif) outbursts from a crustal source linked to a mantle thermal anomaly, as new geochemical data and previous data indicate. New and previous structural, geochemical, and geochronological data allow us to propose the existence of a late Triassic-earliest early Jurassic flat-slab episode (~227?190? Ma), here referred to as the South Gondwanian flat-slab, comparable in size with the largest present and previously documented flat-slab configurations on Earth. This event would have been responsible for the inland arc migration, from a western position on the Antarctic Peninsula to central Patagonia (Central Patagonian Batholith), as well as the widespread contractional pulse registered in southwestern Gondwana. The existence of this late Triassic shallow subduction episode is reinforced by a combination of P-wave seismic ... |
format |
Article in Journal/Newspaper |
author |
Navarrete Granzotto, César Rodrigo Gianni, Guido Martin Encinas, A. Marquez, Marcelo Jose Kamerbeek, Constanza Belén Valle, Mauro Nicolás Folguera, A. |
author_facet |
Navarrete Granzotto, César Rodrigo Gianni, Guido Martin Encinas, A. Marquez, Marcelo Jose Kamerbeek, Constanza Belén Valle, Mauro Nicolás Folguera, A. |
author_sort |
Navarrete Granzotto, César Rodrigo |
title |
Triassic to Middle Jurassic geodynamic evolution of southwestern Gondwana: From a large flat-slab to mantle plume suction in a rollback subduction setting |
title_short |
Triassic to Middle Jurassic geodynamic evolution of southwestern Gondwana: From a large flat-slab to mantle plume suction in a rollback subduction setting |
title_full |
Triassic to Middle Jurassic geodynamic evolution of southwestern Gondwana: From a large flat-slab to mantle plume suction in a rollback subduction setting |
title_fullStr |
Triassic to Middle Jurassic geodynamic evolution of southwestern Gondwana: From a large flat-slab to mantle plume suction in a rollback subduction setting |
title_full_unstemmed |
Triassic to Middle Jurassic geodynamic evolution of southwestern Gondwana: From a large flat-slab to mantle plume suction in a rollback subduction setting |
title_sort |
triassic to middle jurassic geodynamic evolution of southwestern gondwana: from a large flat-slab to mantle plume suction in a rollback subduction setting |
publisher |
Elsevier Science |
url |
http://hdl.handle.net/11336/119062 |
geographic |
Antarctic The Antarctic Antarctic Peninsula Patagonia |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Patagonia |
genre |
Antarc* Antarctic Antarctic Peninsula |
genre_facet |
Antarc* Antarctic Antarctic Peninsula |
op_relation |
info:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S0012825219301655 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.earscirev.2019.05.002 http://hdl.handle.net/11336/119062 Navarrete Granzotto, César Rodrigo; Gianni, Guido Martin; Encinas, A.; Marquez, Marcelo Jose; Kamerbeek, Constanza Belén; et al.; Triassic to Middle Jurassic geodynamic evolution of southwestern Gondwana: From a large flat-slab to mantle plume suction in a rollback subduction setting; Elsevier Science; Earth-science Reviews; 194; 7-2019; 125-159 0012-8252 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.1016/j.earscirev.2019.05.002 |
container_title |
Earth-Science Reviews |
container_volume |
194 |
container_start_page |
125 |
op_container_end_page |
159 |
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1779310250236575744 |