Electrical resistivity tomography and induced polarisation techniques applied to the identifiaction of gypsum rocks

Gypsum deposits are the currently exploited sulphate rocks with industrial purposes. In addition to the expensive drilling projects, geophysical techniques can be considered to estimate the economical potential of these deposits. An electrical resistivity tomography survey has been carried out in th...

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Detalles Bibliográficos
Autores: Guinea Maysounave, Ander, Playà i Pous, Elisabet, Rivero Marginedas, Lluís, Himi, Mahjoub
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2010
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/69559
Acceso en línea:https://hdl.handle.net/2445/69559
Access Level:acceso abierto
Palabra clave:Roques sedimentàries
Sedimentary rocks
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spelling Electrical resistivity tomography and induced polarisation techniques applied to the identifiaction of gypsum rocksGuinea Maysounave, AnderPlayà i Pous, ElisabetRivero Marginedas, LluísHimi, MahjoubRoques sedimentàriesSedimentary rocksGypsum deposits are the currently exploited sulphate rocks with industrial purposes. In addition to the expensive drilling projects, geophysical techniques can be considered to estimate the economical potential of these deposits. An electrical resistivity tomography survey has been carried out in the Pira gypsum formation (SE of the Catalan margin of the Tertiary Ebro Basin, Spain). Additionally, a continuous coring drill was performed in order to support the study. Electrical imaging has been successfully applied to identify the gypsum deposits interlayered in lutite units. Nevertheless, the gypsum-lutite boundaries are diffuse and uncertain in the tomographic lines. Comparison of the cores of the borehole and the electrical response shows a meaningful correlation between electrical resistivity and purity of gypsum. The electrical resistivity tomography profiles display a rather wide range of electrical resistivity value (from 20-1000 Ωm) for the investigated gypsum facies. The highest values are attributed to sulphate layers with >90% of gypsum mineral. Lutite units display higher values than expected due to the presence of evaporite minerals within them (>10 Ωm). Additionally, induced polarization measures have been performed in order to study the chargeability of gypsum deposits. It has been evidenced that impure gypsum rocks (with important presence of lutites within) are slightly chargeable. This property has allowed distinguishing between lutite levels and clay-rich gypsum rocks. Electrical resistivity tomography lines are useful in the prospection of gypsum deposits. However, electrical imaging prospection should be supported by an accurate petrological study of the deposits, in order to properly interpret the resistivity profiles.EAGE2010info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/69559Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a:Near Surface Geophysics, 2010, vol. 8, num. 3, p. 249-257(c) EAGE, 2010info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/695592026-05-27T06:46:51Z
dc.title.none.fl_str_mv Electrical resistivity tomography and induced polarisation techniques applied to the identifiaction of gypsum rocks
title Electrical resistivity tomography and induced polarisation techniques applied to the identifiaction of gypsum rocks
spellingShingle Electrical resistivity tomography and induced polarisation techniques applied to the identifiaction of gypsum rocks
Guinea Maysounave, Ander
Roques sedimentàries
Sedimentary rocks
title_short Electrical resistivity tomography and induced polarisation techniques applied to the identifiaction of gypsum rocks
title_full Electrical resistivity tomography and induced polarisation techniques applied to the identifiaction of gypsum rocks
title_fullStr Electrical resistivity tomography and induced polarisation techniques applied to the identifiaction of gypsum rocks
title_full_unstemmed Electrical resistivity tomography and induced polarisation techniques applied to the identifiaction of gypsum rocks
title_sort Electrical resistivity tomography and induced polarisation techniques applied to the identifiaction of gypsum rocks
dc.creator.none.fl_str_mv Guinea Maysounave, Ander
Playà i Pous, Elisabet
Rivero Marginedas, Lluís
Himi, Mahjoub
author Guinea Maysounave, Ander
author_facet Guinea Maysounave, Ander
Playà i Pous, Elisabet
Rivero Marginedas, Lluís
Himi, Mahjoub
author_role author
author2 Playà i Pous, Elisabet
Rivero Marginedas, Lluís
Himi, Mahjoub
author2_role author
author
author
dc.subject.none.fl_str_mv Roques sedimentàries
Sedimentary rocks
topic Roques sedimentàries
Sedimentary rocks
description Gypsum deposits are the currently exploited sulphate rocks with industrial purposes. In addition to the expensive drilling projects, geophysical techniques can be considered to estimate the economical potential of these deposits. An electrical resistivity tomography survey has been carried out in the Pira gypsum formation (SE of the Catalan margin of the Tertiary Ebro Basin, Spain). Additionally, a continuous coring drill was performed in order to support the study. Electrical imaging has been successfully applied to identify the gypsum deposits interlayered in lutite units. Nevertheless, the gypsum-lutite boundaries are diffuse and uncertain in the tomographic lines. Comparison of the cores of the borehole and the electrical response shows a meaningful correlation between electrical resistivity and purity of gypsum. The electrical resistivity tomography profiles display a rather wide range of electrical resistivity value (from 20-1000 Ωm) for the investigated gypsum facies. The highest values are attributed to sulphate layers with >90% of gypsum mineral. Lutite units display higher values than expected due to the presence of evaporite minerals within them (>10 Ωm). Additionally, induced polarization measures have been performed in order to study the chargeability of gypsum deposits. It has been evidenced that impure gypsum rocks (with important presence of lutites within) are slightly chargeable. This property has allowed distinguishing between lutite levels and clay-rich gypsum rocks. Electrical resistivity tomography lines are useful in the prospection of gypsum deposits. However, electrical imaging prospection should be supported by an accurate petrological study of the deposits, in order to properly interpret the resistivity profiles.
publishDate 2010
dc.date.none.fl_str_mv 2010
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/69559
url https://hdl.handle.net/2445/69559
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a:
Near Surface Geophysics, 2010, vol. 8, num. 3, p. 249-257
dc.rights.none.fl_str_mv (c) EAGE, 2010
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) EAGE, 2010
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv EAGE
publisher.none.fl_str_mv EAGE
dc.source.none.fl_str_mv Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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