Termotectonic controls of the locals mineralizations: A work hypothesis

The volumetric and morphological changes undergone by rock forming minerals due to their relative differencial thermal dilatation (contractional) coeficients arc described as mineralization emplacement control. This way, the contrasting thermal dilatation data for quartz and felspar are reviewed by...

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Autor principal: Rossello, E.A.
Formato: JOUR
Materias:
Mineralizations
Ore emplacement
Structural control
Thermal expansion
magmatism
mineralization
morphology
ore body
spatial distribution
tectonics
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_01019082_v26_n3_p191_Rossello
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_01019082_v26_n3_p191_Rossello
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spelling todo:paper_01019082_v26_n3_p191_Rossello2023-10-03T14:57:22Z Termotectonic controls of the locals mineralizations: A work hypothesis Rossello, E.A. Mineralizations Ore emplacement Structural control Thermal expansion magmatism mineralization morphology ore body spatial distribution tectonics The volumetric and morphological changes undergone by rock forming minerals due to their relative differencial thermal dilatation (contractional) coeficients arc described as mineralization emplacement control. This way, the contrasting thermal dilatation data for quartz and felspar are reviewed by volumetric modeling the effect of a significant variation of α-β quartz transition arround 575°C. The proposed dilatation of the whole rock body resulting by this phenomena could range from 0.4 % for a granitoid with a poor quartz content to 1.2% for a tipically acid rock. Thus, the strong microtectonic changes resulting from these processes on acid rocks (granites to rhyolythes) are asumed to contribute to the generation, transport and spatial distribution of late magmatic mineralization fluids. As a working hypothesis, the thermal dilatation is proposed as an important factor controlling diseminated deposits (also pegmatites, greisen and skarn mineralization) as well as their coeval deformation mechanics during both increasing or decreasing temperature changes. Fil:Rossello, E.A. 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_01019082_v26_n3_p191_Rossello
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Mineralizations
Ore emplacement
Structural control
Thermal expansion
magmatism
mineralization
morphology
ore body
spatial distribution
tectonics
spellingShingle Mineralizations
Ore emplacement
Structural control
Thermal expansion
magmatism
mineralization
morphology
ore body
spatial distribution
tectonics
Rossello, E.A.
Termotectonic controls of the locals mineralizations: A work hypothesis
topic_facet Mineralizations
Ore emplacement
Structural control
Thermal expansion
magmatism
mineralization
morphology
ore body
spatial distribution
tectonics
description The volumetric and morphological changes undergone by rock forming minerals due to their relative differencial thermal dilatation (contractional) coeficients arc described as mineralization emplacement control. This way, the contrasting thermal dilatation data for quartz and felspar are reviewed by volumetric modeling the effect of a significant variation of α-β quartz transition arround 575°C. The proposed dilatation of the whole rock body resulting by this phenomena could range from 0.4 % for a granitoid with a poor quartz content to 1.2% for a tipically acid rock. Thus, the strong microtectonic changes resulting from these processes on acid rocks (granites to rhyolythes) are asumed to contribute to the generation, transport and spatial distribution of late magmatic mineralization fluids. As a working hypothesis, the thermal dilatation is proposed as an important factor controlling diseminated deposits (also pegmatites, greisen and skarn mineralization) as well as their coeval deformation mechanics during both increasing or decreasing temperature changes.
format JOUR
author Rossello, E.A.
author_facet Rossello, E.A.
author_sort Rossello, E.A.
title Termotectonic controls of the locals mineralizations: A work hypothesis
title_short Termotectonic controls of the locals mineralizations: A work hypothesis
title_full Termotectonic controls of the locals mineralizations: A work hypothesis
title_fullStr Termotectonic controls of the locals mineralizations: A work hypothesis
title_full_unstemmed Termotectonic controls of the locals mineralizations: A work hypothesis
title_sort termotectonic controls of the locals mineralizations: a work hypothesis
url http://hdl.handle.net/20.500.12110/paper_01019082_v26_n3_p191_Rossello
work_keys_str_mv AT rosselloea termotectoniccontrolsofthelocalsmineralizationsaworkhypothesis
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