Metal anomaly prospection at cerrado: example for the use of si-phytoliths as anomaly indicators at Riacho dos Machado region, Minas Gerais, Brazil

Detalhes bibliográficos
Autor(a) principal: Heloiza Fernandes-Horn
Data de Publicação: 2018
Outros Autores: Adolf Heinrich Horn, Regynaldo Arruda Sampaio, Márcio Neves Rodrigues, Luana Duarte, Essaïd Bilal, Hernando Baggio Filho, Isabela Claret Torres
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFMG
Texto Completo: http://dx.doi.org/10.21715/GB2358-2812.2018321040
http://hdl.handle.net/1843/42218
Resumo: The target area of this work is a heavy metal anomaly in the surroundings of a gold mine and a lead mining complex. This work investigated the distribution of selected heavy elements in soil samples and Si-Phytoliths from plants. The aim was to verify if metal contents are indicative for metal anomalies in the soil. Plants and soil samples were collected in profiles over granitic-gneissic rocks, which form the basement, in tectonized contact with the overlaying sedimentary units belonging to the Riacho dos Machados Group, part of the Espinhaço Super Group. The whole rock substrate is covered by lateritic to arenitic soils with different exposure depths. Metal-rich fluid invaded these units, forming metal anomalies culming in Zn-Pb-Au deposits, like that of Salobre-Porteirinha. After appropriate preparation, the samples were, analyzed by ICP-OES (Si-Phytoliths) and FRX (soil). Anomalies in the investigated profile are indicated by high metal contents in the Si-Phytoliths of the selected species. Using different species the metal concentration in different depths can be determined in a simple and easy way. The Si-Phytolith concentrations seem to reproduce better the rock metal anomalies than the soil samples.
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spelling 2022-06-03T14:00:43Z2022-06-03T14:00:43Z20183214046http://dx.doi.org/10.21715/GB2358-2812.20183210402358-2812http://hdl.handle.net/1843/42218The target area of this work is a heavy metal anomaly in the surroundings of a gold mine and a lead mining complex. This work investigated the distribution of selected heavy elements in soil samples and Si-Phytoliths from plants. The aim was to verify if metal contents are indicative for metal anomalies in the soil. Plants and soil samples were collected in profiles over granitic-gneissic rocks, which form the basement, in tectonized contact with the overlaying sedimentary units belonging to the Riacho dos Machados Group, part of the Espinhaço Super Group. The whole rock substrate is covered by lateritic to arenitic soils with different exposure depths. Metal-rich fluid invaded these units, forming metal anomalies culming in Zn-Pb-Au deposits, like that of Salobre-Porteirinha. After appropriate preparation, the samples were, analyzed by ICP-OES (Si-Phytoliths) and FRX (soil). Anomalies in the investigated profile are indicated by high metal contents in the Si-Phytoliths of the selected species. Using different species the metal concentration in different depths can be determined in a simple and easy way. The Si-Phytolith concentrations seem to reproduce better the rock metal anomalies than the soil samples.O alvo deste trabalho é uma anomalia de metais pesados nos arredores de uma mina de ouro em uma mineração de chumbo. Este estudo investigou a distribuição dos elementos pesados selecionados em amostras de solo e em SiFitólitos de plantas. O objetivo foi verificar se o conteúdo de metais nos SiFitólitos é indicativo para anomalias destes metal no solo ou substrato. Plantas e amostras de solo foram coletadas em perfis de solos sobre rochas gnáissicograníticas, que formam o embasamento e que estão em contato tectônico com as unidades sedimentares superiores, pertencentes ao Grupo Riacho dos Machados, parte do Supergrupo Espinhaço. O embasamento é coberto por solos lateríticos a areniticos, com profundidades de exposição diferente. Fluido rico em metal invadiu estas unidades, formando anomalias de metais que chegaram a depósitos econômicos de Pb-Zn-Au, como o de SalobrePorteirinha e Riacho dos Machados. Após a preparação adequada, as amostras foram, analisadas por ICP-OES (amostras de Si-Phytoliths) e FRX (amostras de solo). Anomalias no perfil investigado são indicadas pelo alto conteúdo de metal na Si-Phytoliths das espécies selecionadas. A concentração de metal em diferentes profundidades usando diferentes espécies pode ser simples e facilmente executada. As concentrações de Si-Phytolith parecem reproduzir melhor as anomalias metálicas do substrato de rocha do que as amostras de solo.CNPq - Conselho Nacional de Desenvolvimento Científico e TecnológicoFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas GeraisOutra AgênciaengUniversidade Federal de Minas GeraisUFMGBrasilICA - INSTITUTO DE CIÊNCIAS AGRÁRIASGeochimica BrasiliensisCerradosMetais pesadosChumboMinas e mineraçãoMinas Gerais, NorteBiomineralMetais pesadosSílico-fitólitosMetal anomaly prospection at cerrado: example for the use of si-phytoliths as anomaly indicators at Riacho dos Machado region, Minas Gerais, Brazilinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttps://ppegeo.igc.usp.br/index.php/geobras/article/view/12590Heloiza Fernandes-HornAdolf Heinrich HornRegynaldo Arruda SampaioMárcio Neves RodriguesLuana DuarteEssaïd BilalHernando Baggio FilhoIsabela Claret Torresinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFMGinstname:Universidade Federal de Minas Gerais (UFMG)instacron:UFMGORIGINALMetal anomaly prospection at cerrado. example for the use of si-phytoliths as anomaly indicators at riacho dos machado region, minas gerais, brazil.pdfMetal anomaly prospection at cerrado. example for the use of si-phytoliths as anomaly indicators at riacho dos machado region, minas gerais, brazil.pdfapplication/pdf1070443https://repositorio.ufmg.br/bitstream/1843/42218/2/Metal%20anomaly%20prospection%20at%20cerrado.%20example%20for%20the%20use%20of%20si-phytoliths%20as%20anomaly%20indicators%20at%20riacho%20dos%20machado%20region%2c%20minas%20gerais%2c%20brazil.pdf4a3bfc63ead4e598520a57219038105bMD52LICENSELicense.txtLicense.txttext/plain; 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dc.title.pt_BR.fl_str_mv Metal anomaly prospection at cerrado: example for the use of si-phytoliths as anomaly indicators at Riacho dos Machado region, Minas Gerais, Brazil
title Metal anomaly prospection at cerrado: example for the use of si-phytoliths as anomaly indicators at Riacho dos Machado region, Minas Gerais, Brazil
spellingShingle Metal anomaly prospection at cerrado: example for the use of si-phytoliths as anomaly indicators at Riacho dos Machado region, Minas Gerais, Brazil
Heloiza Fernandes-Horn
Biomineral
Metais pesados
Sílico-fitólitos
Cerrados
Metais pesados
Chumbo
Minas e mineração
Minas Gerais, Norte
title_short Metal anomaly prospection at cerrado: example for the use of si-phytoliths as anomaly indicators at Riacho dos Machado region, Minas Gerais, Brazil
title_full Metal anomaly prospection at cerrado: example for the use of si-phytoliths as anomaly indicators at Riacho dos Machado region, Minas Gerais, Brazil
title_fullStr Metal anomaly prospection at cerrado: example for the use of si-phytoliths as anomaly indicators at Riacho dos Machado region, Minas Gerais, Brazil
title_full_unstemmed Metal anomaly prospection at cerrado: example for the use of si-phytoliths as anomaly indicators at Riacho dos Machado region, Minas Gerais, Brazil
title_sort Metal anomaly prospection at cerrado: example for the use of si-phytoliths as anomaly indicators at Riacho dos Machado region, Minas Gerais, Brazil
author Heloiza Fernandes-Horn
author_facet Heloiza Fernandes-Horn
Adolf Heinrich Horn
Regynaldo Arruda Sampaio
Márcio Neves Rodrigues
Luana Duarte
Essaïd Bilal
Hernando Baggio Filho
Isabela Claret Torres
author_role author
author2 Adolf Heinrich Horn
Regynaldo Arruda Sampaio
Márcio Neves Rodrigues
Luana Duarte
Essaïd Bilal
Hernando Baggio Filho
Isabela Claret Torres
author2_role author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Heloiza Fernandes-Horn
Adolf Heinrich Horn
Regynaldo Arruda Sampaio
Márcio Neves Rodrigues
Luana Duarte
Essaïd Bilal
Hernando Baggio Filho
Isabela Claret Torres
dc.subject.por.fl_str_mv Biomineral
Metais pesados
Sílico-fitólitos
topic Biomineral
Metais pesados
Sílico-fitólitos
Cerrados
Metais pesados
Chumbo
Minas e mineração
Minas Gerais, Norte
dc.subject.other.pt_BR.fl_str_mv Cerrados
Metais pesados
Chumbo
Minas e mineração
Minas Gerais, Norte
description The target area of this work is a heavy metal anomaly in the surroundings of a gold mine and a lead mining complex. This work investigated the distribution of selected heavy elements in soil samples and Si-Phytoliths from plants. The aim was to verify if metal contents are indicative for metal anomalies in the soil. Plants and soil samples were collected in profiles over granitic-gneissic rocks, which form the basement, in tectonized contact with the overlaying sedimentary units belonging to the Riacho dos Machados Group, part of the Espinhaço Super Group. The whole rock substrate is covered by lateritic to arenitic soils with different exposure depths. Metal-rich fluid invaded these units, forming metal anomalies culming in Zn-Pb-Au deposits, like that of Salobre-Porteirinha. After appropriate preparation, the samples were, analyzed by ICP-OES (Si-Phytoliths) and FRX (soil). Anomalies in the investigated profile are indicated by high metal contents in the Si-Phytoliths of the selected species. Using different species the metal concentration in different depths can be determined in a simple and easy way. The Si-Phytolith concentrations seem to reproduce better the rock metal anomalies than the soil samples.
publishDate 2018
dc.date.issued.fl_str_mv 2018
dc.date.accessioned.fl_str_mv 2022-06-03T14:00:43Z
dc.date.available.fl_str_mv 2022-06-03T14:00:43Z
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 http://hdl.handle.net/1843/42218
dc.identifier.doi.pt_BR.fl_str_mv http://dx.doi.org/10.21715/GB2358-2812.2018321040
dc.identifier.issn.pt_BR.fl_str_mv 2358-2812
url http://dx.doi.org/10.21715/GB2358-2812.2018321040
http://hdl.handle.net/1843/42218
identifier_str_mv 2358-2812
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.pt_BR.fl_str_mv Geochimica Brasiliensis
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Universidade Federal de Minas Gerais
dc.publisher.initials.fl_str_mv UFMG
dc.publisher.country.fl_str_mv Brasil
dc.publisher.department.fl_str_mv ICA - INSTITUTO DE CIÊNCIAS AGRÁRIAS
publisher.none.fl_str_mv Universidade Federal de Minas Gerais
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFMG
instname:Universidade Federal de Minas Gerais (UFMG)
instacron:UFMG
instname_str Universidade Federal de Minas Gerais (UFMG)
instacron_str UFMG
institution UFMG
reponame_str Repositório Institucional da UFMG
collection Repositório Institucional da UFMG
bitstream.url.fl_str_mv https://repositorio.ufmg.br/bitstream/1843/42218/2/Metal%20anomaly%20prospection%20at%20cerrado.%20example%20for%20the%20use%20of%20si-phytoliths%20as%20anomaly%20indicators%20at%20riacho%20dos%20machado%20region%2c%20minas%20gerais%2c%20brazil.pdf
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