Gamma-ray spectrometry signature of paraná volcanic rocks: Preliminary results

The Paraná volcanic rocks (Serra Geral Formation) are characterized by four different types of rocks. The basalts are the most common, and display an integranular texture and dark gray to black color, in massive outcrops. The acid volcanics are represented by aphyric, salt-and-pepper texture, light...

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Detalhes bibliográficos
Autores: Nardy, Antonio José Ranalli [UNESP], Moreira, César Augusto [UNESP], Machado, Fábio Braz, Luchetti, Ana Carolina F. [UNESP], Hansen, Marco Antonio Fontoura, Rossini, Adílson José [UNESP], Barbosa, Vladimir [UNESP]
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2014
País:Brasil
Recursos:Universidade Estadual Paulista (UNESP)
Repositorio:Repositório Institucional da UNESP
Idioma:inglés
OAI Identifier:oai:repositorio.unesp.br:11449/232328
Acesso em linha:http://hdl.handle.net/11449/232328
Access Level:acceso abierto
Palavra-chave:Gamma-ray spectrometry
Paraná Magmatic Province
Serra geral formation
Volcanic rocks
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spelling Gamma-ray spectrometry signature of paraná volcanic rocks: Preliminary resultsGamma-ray spectrometryParaná Magmatic ProvinceSerra geral formationVolcanic rocksThe Paraná volcanic rocks (Serra Geral Formation) are characterized by four different types of rocks. The basalts are the most common, and display an integranular texture and dark gray to black color, in massive outcrops. The acid volcanics are represented by aphyric, salt-and-pepper texture, light gray color, named Palmas type (ATP), and by strongly porphyritic, green to brownish gray color, named Chapecó (ATC). The intermediate rocks are represented by light gray, aphyric andesites. Sometimes, it is very difficult to distinguish andesites from ATP rocks or even from basalts, using only petrographic criteria. However, from the geochemical point of view, these rocks are quite different, including the radioactive elements (K, U and Th). In this way the portable gamma-ray spectrometer argued being a useful tool to recognize different rock types with different total gamma-ray signature, such as basalts (4.7 ± 0.8 μRh-1); andesites (7.2 ±1.2 μRh-1), ATC (11.3 ± 1.2 μRh-1) and for ATP (15.4 ± 2.4 μRh-1).Universidade Estadual Paulista, Av. 24A, 1515Universidade Federal de São Paulo, Rua Prof. Artur Riedel, 275Universidade Federal do Pampa, Av. Pedro Anunciação s/nUniversidade Estadual Paulista, Av. 24A, 1515Universidade Estadual Paulista (UNESP)Universidade Federal de São Paulo (UNIFESP)Universidade Federal do Pampa2022-04-29T11:41:00Z2022-04-29T11:41:00Z2014-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article216-227Geociencias, v. 33, n. 2, p. 216-227, 2014.1980-900X0101-9082http://hdl.handle.net/11449/2323282-s2.0-84908159670Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengGeocienciasinfo:eu-repo/semantics/openAccessNardy, Antonio José Ranalli [UNESP]Moreira, César Augusto [UNESP]Machado, Fábio BrazLuchetti, Ana Carolina F. [UNESP]Hansen, Marco Antonio FontouraRossini, Adílson José [UNESP]Barbosa, Vladimir [UNESP]2024-11-28T13:41:53Zoai:repositorio.unesp.br:11449/232328Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestrepositoriounesp@unesp.bropendoar:29462024-11-28T13:41:53Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Gamma-ray spectrometry signature of paraná volcanic rocks: Preliminary results
title Gamma-ray spectrometry signature of paraná volcanic rocks: Preliminary results
spellingShingle Gamma-ray spectrometry signature of paraná volcanic rocks: Preliminary results
Nardy, Antonio José Ranalli [UNESP]
Gamma-ray spectrometry
Paraná Magmatic Province
Serra geral formation
Volcanic rocks
title_short Gamma-ray spectrometry signature of paraná volcanic rocks: Preliminary results
title_full Gamma-ray spectrometry signature of paraná volcanic rocks: Preliminary results
title_fullStr Gamma-ray spectrometry signature of paraná volcanic rocks: Preliminary results
title_full_unstemmed Gamma-ray spectrometry signature of paraná volcanic rocks: Preliminary results
title_sort Gamma-ray spectrometry signature of paraná volcanic rocks: Preliminary results
dc.creator.none.fl_str_mv Nardy, Antonio José Ranalli [UNESP]
Moreira, César Augusto [UNESP]
Machado, Fábio Braz
Luchetti, Ana Carolina F. [UNESP]
Hansen, Marco Antonio Fontoura
Rossini, Adílson José [UNESP]
Barbosa, Vladimir [UNESP]
author Nardy, Antonio José Ranalli [UNESP]
author_facet Nardy, Antonio José Ranalli [UNESP]
Moreira, César Augusto [UNESP]
Machado, Fábio Braz
Luchetti, Ana Carolina F. [UNESP]
Hansen, Marco Antonio Fontoura
Rossini, Adílson José [UNESP]
Barbosa, Vladimir [UNESP]
author_role author
author2 Moreira, César Augusto [UNESP]
Machado, Fábio Braz
Luchetti, Ana Carolina F. [UNESP]
Hansen, Marco Antonio Fontoura
Rossini, Adílson José [UNESP]
Barbosa, Vladimir [UNESP]
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
Universidade Federal de São Paulo (UNIFESP)
Universidade Federal do Pampa
dc.subject.por.fl_str_mv Gamma-ray spectrometry
Paraná Magmatic Province
Serra geral formation
Volcanic rocks
topic Gamma-ray spectrometry
Paraná Magmatic Province
Serra geral formation
Volcanic rocks
description The Paraná volcanic rocks (Serra Geral Formation) are characterized by four different types of rocks. The basalts are the most common, and display an integranular texture and dark gray to black color, in massive outcrops. The acid volcanics are represented by aphyric, salt-and-pepper texture, light gray color, named Palmas type (ATP), and by strongly porphyritic, green to brownish gray color, named Chapecó (ATC). The intermediate rocks are represented by light gray, aphyric andesites. Sometimes, it is very difficult to distinguish andesites from ATP rocks or even from basalts, using only petrographic criteria. However, from the geochemical point of view, these rocks are quite different, including the radioactive elements (K, U and Th). In this way the portable gamma-ray spectrometer argued being a useful tool to recognize different rock types with different total gamma-ray signature, such as basalts (4.7 ± 0.8 μRh-1); andesites (7.2 ±1.2 μRh-1), ATC (11.3 ± 1.2 μRh-1) and for ATP (15.4 ± 2.4 μRh-1).
publishDate 2014
dc.date.none.fl_str_mv 2014-01-01
2022-04-29T11:41:00Z
2022-04-29T11:41:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv Geociencias, v. 33, n. 2, p. 216-227, 2014.
1980-900X
0101-9082
http://hdl.handle.net/11449/232328
2-s2.0-84908159670
identifier_str_mv Geociencias, v. 33, n. 2, p. 216-227, 2014.
1980-900X
0101-9082
2-s2.0-84908159670
url http://hdl.handle.net/11449/232328
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Geociencias
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 216-227
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv repositoriounesp@unesp.br
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score 15.301629

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