Anisotropy of magnetic susceptibility study in two classical localities of the Gastre Fault System, central Patagonia

The Central Patagonian Batholith is a suite of acid and meso-silicic rocks cropping out in central Patagonia. The emplacement of these rocks has been proposed to be related to the activity of a system of dextral transcurrent faults, the NW-SE Gastre Fault System. This fault system has been ascribed...

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Autores principales: Zaffarana, C.B., López de luchi, M.G., Somoza, R., Mercader, R., Giacosa, R., Martino, R.D.
Formato: JOUR
Materias:
Gastre
Patagonia
Transcontinental fault
West Gondwana breakup
batholith
continental breakup
displacement
faulting
geomagnetism
Gondwana
Jurassic
kinematics
magnetic anisotropy
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_08959811_v30_n3-4_p151_Zaffarana
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_08959811_v30_n3-4_p151_Zaffarana2023-10-03T15:42:57Z Anisotropy of magnetic susceptibility study in two classical localities of the Gastre Fault System, central Patagonia Zaffarana, C.B. López de luchi, M.G. Somoza, R. Mercader, R. Giacosa, R. Martino, R.D. Gastre Patagonia Transcontinental fault West Gondwana breakup batholith continental breakup displacement faulting geomagnetism Gondwana Jurassic kinematics magnetic anisotropy Patagonia The Central Patagonian Batholith is a suite of acid and meso-silicic rocks cropping out in central Patagonia. The emplacement of these rocks has been proposed to be related to the activity of a system of dextral transcurrent faults, the NW-SE Gastre Fault System. This fault system has been ascribed a transcontinental magnitude and a ∼500 km dextral displacement during Gondwana dismembering in Jurassic times. However, the timing, kinematics and amount of displacement of the Gastre Fault System are still controversial. In this work we have visited two localities which were subject of controversial observations, in order to perform petrographical, microstructural and anisotropy of the magnetic susceptibility studies to contribute to the ongoing discussion. The results mostly agree with the findings von Gosen and Loske (2004) in that rocks spatially and temporally associated to the Gastre Fault System do not show evidence supporting the existence of a major dextral fault system active during Jurassic times. © 2010 Elsevier Ltd. Fil:Zaffarana, C.B. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Somoza, R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_08959811_v30_n3-4_p151_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 Gastre
Patagonia
Transcontinental fault
West Gondwana breakup
batholith
continental breakup
displacement
faulting
geomagnetism
Gondwana
Jurassic
kinematics
magnetic anisotropy
Patagonia
spellingShingle Gastre
Patagonia
Transcontinental fault
West Gondwana breakup
batholith
continental breakup
displacement
faulting
geomagnetism
Gondwana
Jurassic
kinematics
magnetic anisotropy
Patagonia
Zaffarana, C.B.
López de luchi, M.G.
Somoza, R.
Mercader, R.
Giacosa, R.
Martino, R.D.
Anisotropy of magnetic susceptibility study in two classical localities of the Gastre Fault System, central Patagonia
topic_facet Gastre
Patagonia
Transcontinental fault
West Gondwana breakup
batholith
continental breakup
displacement
faulting
geomagnetism
Gondwana
Jurassic
kinematics
magnetic anisotropy
Patagonia
description The Central Patagonian Batholith is a suite of acid and meso-silicic rocks cropping out in central Patagonia. The emplacement of these rocks has been proposed to be related to the activity of a system of dextral transcurrent faults, the NW-SE Gastre Fault System. This fault system has been ascribed a transcontinental magnitude and a ∼500 km dextral displacement during Gondwana dismembering in Jurassic times. However, the timing, kinematics and amount of displacement of the Gastre Fault System are still controversial. In this work we have visited two localities which were subject of controversial observations, in order to perform petrographical, microstructural and anisotropy of the magnetic susceptibility studies to contribute to the ongoing discussion. The results mostly agree with the findings von Gosen and Loske (2004) in that rocks spatially and temporally associated to the Gastre Fault System do not show evidence supporting the existence of a major dextral fault system active during Jurassic times. © 2010 Elsevier Ltd.
format JOUR
author Zaffarana, C.B.
López de luchi, M.G.
Somoza, R.
Mercader, R.
Giacosa, R.
Martino, R.D.
author_facet Zaffarana, C.B.
López de luchi, M.G.
Somoza, R.
Mercader, R.
Giacosa, R.
Martino, R.D.
author_sort Zaffarana, C.B.
title Anisotropy of magnetic susceptibility study in two classical localities of the Gastre Fault System, central Patagonia
title_short Anisotropy of magnetic susceptibility study in two classical localities of the Gastre Fault System, central Patagonia
title_full Anisotropy of magnetic susceptibility study in two classical localities of the Gastre Fault System, central Patagonia
title_fullStr Anisotropy of magnetic susceptibility study in two classical localities of the Gastre Fault System, central Patagonia
title_full_unstemmed Anisotropy of magnetic susceptibility study in two classical localities of the Gastre Fault System, central Patagonia
title_sort anisotropy of magnetic susceptibility study in two classical localities of the gastre fault system, central patagonia
url http://hdl.handle.net/20.500.12110/paper_08959811_v30_n3-4_p151_Zaffarana
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