First geochemical and geochronological characterization of Late Cretaceous mesosilicic magmatism in Gastre, Northern Patagonia, and its tectonic relation to other coeval volcanic rocks in the region

This work characterizes Late Cretaceous calc-alkaline volcanic rocks in Gastre, Northern Patagonia, Argentina. These newly found porphyritic rocks bear an 40Ar–39Ar amphibole age of ~ 74–76 Ma, a subduction-type geochemical signature and a deep, garnet-bearing source. Extruded in a stage of low magm...

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Autores principales: ZAFFARANA, C., LAGORIO, S., ORTS, D., BUSTEROS, A., NIETO, D.S., GIACOSA, R., RUIZ GONZÁLEZ, V., BOLTSHAUSER, B., PUIGDOMENECH NEGRE, C., SOMOZA, R., HALLER, M.
Formato: INPR
Materias:
Chile Ridge
compressive deformation
slab shallowing
subduction magmatism
Tres Picos Prieto
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00167568_v_n_p1_ZAFFARANA
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00167568_v_n_p1_ZAFFARANA
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spelling todo:paper_00167568_v_n_p1_ZAFFARANA2023-10-03T14:14:44Z First geochemical and geochronological characterization of Late Cretaceous mesosilicic magmatism in Gastre, Northern Patagonia, and its tectonic relation to other coeval volcanic rocks in the region ZAFFARANA, C. LAGORIO, S. ORTS, D. BUSTEROS, A. NIETO, D.S. GIACOSA, R. RUIZ GONZÁLEZ, V. BOLTSHAUSER, B. PUIGDOMENECH NEGRE, C. SOMOZA, R. HALLER, M. Chile Ridge compressive deformation slab shallowing subduction magmatism Tres Picos Prieto This work characterizes Late Cretaceous calc-alkaline volcanic rocks in Gastre, Northern Patagonia, Argentina. These newly found porphyritic rocks bear an 40Ar–39Ar amphibole age of ~ 74–76 Ma, a subduction-type geochemical signature and a deep, garnet-bearing source. Extruded in a stage of low magmatic activity in the Northern Patagonian Andes (~ 41–44° S), they could represent an eastward migration of the Late Cretaceous magmatic arc that was associated with a regional compressive deformational stage in the South American margin. Copyright © Cambridge University Press 2018 INPR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00167568_v_n_p1_ZAFFARANA
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Chile Ridge
compressive deformation
slab shallowing
subduction magmatism
Tres Picos Prieto
spellingShingle Chile Ridge
compressive deformation
slab shallowing
subduction magmatism
Tres Picos Prieto
ZAFFARANA, C.
LAGORIO, S.
ORTS, D.
BUSTEROS, A.
NIETO, D.S.
GIACOSA, R.
RUIZ GONZÁLEZ, V.
BOLTSHAUSER, B.
PUIGDOMENECH NEGRE, C.
SOMOZA, R.
HALLER, M.
First geochemical and geochronological characterization of Late Cretaceous mesosilicic magmatism in Gastre, Northern Patagonia, and its tectonic relation to other coeval volcanic rocks in the region
topic_facet Chile Ridge
compressive deformation
slab shallowing
subduction magmatism
Tres Picos Prieto
description This work characterizes Late Cretaceous calc-alkaline volcanic rocks in Gastre, Northern Patagonia, Argentina. These newly found porphyritic rocks bear an 40Ar–39Ar amphibole age of ~ 74–76 Ma, a subduction-type geochemical signature and a deep, garnet-bearing source. Extruded in a stage of low magmatic activity in the Northern Patagonian Andes (~ 41–44° S), they could represent an eastward migration of the Late Cretaceous magmatic arc that was associated with a regional compressive deformational stage in the South American margin. Copyright © Cambridge University Press 2018
format INPR
author ZAFFARANA, C.
LAGORIO, S.
ORTS, D.
BUSTEROS, A.
NIETO, D.S.
GIACOSA, R.
RUIZ GONZÁLEZ, V.
BOLTSHAUSER, B.
PUIGDOMENECH NEGRE, C.
SOMOZA, R.
HALLER, M.
author_facet ZAFFARANA, C.
LAGORIO, S.
ORTS, D.
BUSTEROS, A.
NIETO, D.S.
GIACOSA, R.
RUIZ GONZÁLEZ, V.
BOLTSHAUSER, B.
PUIGDOMENECH NEGRE, C.
SOMOZA, R.
HALLER, M.
author_sort ZAFFARANA, C.
title First geochemical and geochronological characterization of Late Cretaceous mesosilicic magmatism in Gastre, Northern Patagonia, and its tectonic relation to other coeval volcanic rocks in the region
title_short First geochemical and geochronological characterization of Late Cretaceous mesosilicic magmatism in Gastre, Northern Patagonia, and its tectonic relation to other coeval volcanic rocks in the region
title_full First geochemical and geochronological characterization of Late Cretaceous mesosilicic magmatism in Gastre, Northern Patagonia, and its tectonic relation to other coeval volcanic rocks in the region
title_fullStr First geochemical and geochronological characterization of Late Cretaceous mesosilicic magmatism in Gastre, Northern Patagonia, and its tectonic relation to other coeval volcanic rocks in the region
title_full_unstemmed First geochemical and geochronological characterization of Late Cretaceous mesosilicic magmatism in Gastre, Northern Patagonia, and its tectonic relation to other coeval volcanic rocks in the region
title_sort first geochemical and geochronological characterization of late cretaceous mesosilicic magmatism in gastre, northern patagonia, and its tectonic relation to other coeval volcanic rocks in the region
url http://hdl.handle.net/20.500.12110/paper_00167568_v_n_p1_ZAFFARANA
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