skip to main content
Visitante
Meu Espaço
Minha Conta
Sair
Identificação
This feature requires javascript
Tags
Revistas Eletrônicas (eJournals)
Livros Eletrônicos (eBooks)
Bases de Dados
Bibliotecas USP
Ajuda
Ajuda
Idioma:
Inglês
Espanhol
Português
This feature required javascript
This feature requires javascript
Primo Search
Busca Geral
Busca Geral
Acervo Físico
Acervo Físico
Produção Intelectual da USP
Produção USP
Search For:
Clear Search Box
Search in:
Busca Geral
Or select another collection:
Search in:
Busca Geral
Busca Avançada
Busca por Índices
This feature requires javascript
This feature requires javascript
Induced Polarization as a Tool to Assess Mineral Deposits: A Review
Revil, André ; Vaudelet, Pierre ; Su, Zhaoyang ; Chen, Rujun
Minerals (Basel), 2022-05, Vol.12 (5), p.571
[Periódico revisado por pares]
Basel: MDPI AG
Texto completo disponível
Citações
Citado por
Exibir Online
Detalhes
Resenhas & Tags
Mais Opções
Nº de Citações
This feature requires javascript
Enviar para
Adicionar ao Meu Espaço
Remover do Meu Espaço
E-mail (máximo 30 registros por vez)
Imprimir
Link permanente
Referência
EasyBib
EndNote
RefWorks
del.icio.us
Exportar RIS
Exportar BibTeX
This feature requires javascript
Título:
Induced Polarization as a Tool to Assess Mineral Deposits: A Review
Autor:
Revil, André
;
Vaudelet, Pierre
;
Su, Zhaoyang
;
Chen, Rujun
Assuntos:
Archaeology
;
Cation exchange
;
Cation exchanging
;
Cations
;
Clay minerals
;
complex conductivity
;
Cubes
;
Detection
;
Electric currents
;
Electrical conductivity
;
Electrical resistivity
;
Electrodes
;
Exchange capacity
;
exploration
;
Geophysics
;
Grain size
;
Induced polarization
;
Laboratories
;
Localization
;
Mineral deposits
;
Ocean floor
;
ore body
;
Ores
;
Polarization
;
Pore water
;
Porous materials
;
Porous media
;
Pyrite
;
Relaxation time
;
Rocks
;
Schists
;
Sciences of the Universe
;
Slag
;
System theory
;
Tectonics
;
Tomography
É parte de:
Minerals (Basel), 2022-05, Vol.12 (5), p.571
Descrição:
Disseminated ores in porous or fractured media can be polarized under the application of an external low-frequency electrical field. This polarization is characterized by a dimensionless property that is called the “chargeability”. Induced polarization is a nonintrusive geophysical sensing technique that be used in the field to image both the electrical conductivity and the chargeability of porous rocks together with a characteristic relaxation time. A petrophysical model of the induced polarization of metallic ores immersed in a porous conductive and polarizable material is reviewed, and its predictions are compared to a large dataset of experimental data. The model shows that the chargeability of the material is linearly dependent on the volume fraction of the ore and the chargeability of the background material, which can, in turn, be related to the conductivity of the pore water and the cation exchange capacity of the clay fraction. The relaxation time depends on the grain sizes of the ores and on the conductivity of the background material, which is close to the conductivity of the porous rock itself. Five applications of the induced-polarization method to ore and metallic bodies are discussed in order to show the usefulness of this technique. These applications include: (i) A sandbox experiment, in which cubes of pyrite are located in a specific area of the tank; (ii) The tomography of an iron slag at an archeological site in France; (iii) A study of partially frozen graphitic schists in the French Alps; (iv) The detection of a metallic tank through the tomography of the relaxation times; and (v) The detection and localization of a deep ore body that is associated with a tectonic fault. We also discuss the possibility of combining self-potential and induced-polarization tomography to better characterize ore bodies below the seafloor.
Editor:
Basel: MDPI AG
Idioma:
Inglês
Links
View record in HAL
This feature requires javascript
This feature requires javascript
Voltar para lista de resultados
This feature requires javascript
This feature requires javascript
Buscando em bases de dados remotas. Favor aguardar.
Buscando por
em
scope:(USP_PRODUCAO),scope:(USP_EBOOKS),scope:("PRIMO"),scope:(USP),scope:(USP_EREVISTAS),scope:(USP_FISICO),primo_central_multiple_fe
Mostrar o que foi encontrado até o momento
This feature requires javascript
This feature requires javascript