Delineation and Quasi-3D Modeling of Gold Mineralization Using Self-Potential (SP), Electrical Resistivity Tomography (ERT), and Induced Polarization (IP) Methods in Yassa Village, Adamawa, Cameroon: A Case Study
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s00024-022-02951-y http://hdl.handle.net/11449/223356 |
Resumo: | The Lom volcano-sedimentary formation belongs to the Adamawa-Yadé (AYD) domain of the Pan-African fold belt in Cameroon. It is a geological formation presenting mineral deposits of economic potential such as gold and diamonds. The area is under small-scale and many artisanal gold mines. A geophysical study was carried out in the village Yassa, a locality situated within this geological formation, close to an artisanal mining excavation in order to define and propose a model of potential mineralized targets. The geophysical study involved the combination of electrical resistivity tomography (ERT), induced polarization (IP), and self-potential (SP) methods. The acquisition of data consisted of 15 electrical tomography lines in Schlumberger arrangement and a collection of SP data along these profiles in the absence of injected current. The anomalies of possible sulfide mineralization were found at a depth of about 10–25 m with a major NE–SW trend by applying the Euler deconvolution to the SP data. The ERT and IP data allow the production of the 2D inversion which is interpolated to obtain pseudo-models of the isosurface of potential mineralization. The correlation of geological information and the 3D isosurface pseudo-models indicates the characterization of zones with sulfides, with high chargeability values (≥ 30 mV/V). A body exhibiting this high chargeability correlating with a low resistivity (≤ 60 Ω m) is observed south of the study area. This body linked to a sulfurized zone presents its roof at an average depth of 13 m with a lateral extension in depth and a NE–SW orientation in agreement with the overall orientation of the area’s major tectonic lines. Another polarizable body, located in the near surface to the north of the study prospect over an average depth of about 10 m, correlates with high resistivity (4500 Ω m), thus characterizing a probable zone of silicification. |
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Delineation and Quasi-3D Modeling of Gold Mineralization Using Self-Potential (SP), Electrical Resistivity Tomography (ERT), and Induced Polarization (IP) Methods in Yassa Village, Adamawa, Cameroon: A Case Study3D modelingelectrical resistivity tomographyinduced polarizationMineral explorationnatural electric potentialsulfidesThe Lom volcano-sedimentary formation belongs to the Adamawa-Yadé (AYD) domain of the Pan-African fold belt in Cameroon. It is a geological formation presenting mineral deposits of economic potential such as gold and diamonds. The area is under small-scale and many artisanal gold mines. A geophysical study was carried out in the village Yassa, a locality situated within this geological formation, close to an artisanal mining excavation in order to define and propose a model of potential mineralized targets. The geophysical study involved the combination of electrical resistivity tomography (ERT), induced polarization (IP), and self-potential (SP) methods. The acquisition of data consisted of 15 electrical tomography lines in Schlumberger arrangement and a collection of SP data along these profiles in the absence of injected current. The anomalies of possible sulfide mineralization were found at a depth of about 10–25 m with a major NE–SW trend by applying the Euler deconvolution to the SP data. The ERT and IP data allow the production of the 2D inversion which is interpolated to obtain pseudo-models of the isosurface of potential mineralization. The correlation of geological information and the 3D isosurface pseudo-models indicates the characterization of zones with sulfides, with high chargeability values (≥ 30 mV/V). A body exhibiting this high chargeability correlating with a low resistivity (≤ 60 Ω m) is observed south of the study area. This body linked to a sulfurized zone presents its roof at an average depth of 13 m with a lateral extension in depth and a NE–SW orientation in agreement with the overall orientation of the area’s major tectonic lines. Another polarizable body, located in the near surface to the north of the study prospect over an average depth of about 10 m, correlates with high resistivity (4500 Ω m), thus characterizing a probable zone of silicification.Postgraduate School of Sciences Technologies and Geosciences University of Yaoundé ISchool of Geology and Mining Engineering University of NgaoundéréDepartment of Physics Advanced Teacher’s Training College University of Yaoundé IGeosciences and Exact Sciences Institute (IGCE) Sao Paulo State University (UNESP), Av. 24-A, 1515, Bela Vista, Sao PauloGeosciences and Exact Sciences Institute (IGCE) Sao Paulo State University (UNESP), Av. 24-A, 1515, Bela Vista, Sao PauloUniversity of Yaoundé IUniversity of NgaoundéréUniversidade Estadual Paulista (UNESP)Embeng, Steve Barthélémy NgoaMeying, ArsèneNdougsa-Mbarga, ThéophileMoreira, César Augusto [UNESP]Amougou, Olivier Ulrich Owono2022-04-28T19:50:10Z2022-04-28T19:50:10Z2022-02-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article795-815http://dx.doi.org/10.1007/s00024-022-02951-yPure and Applied Geophysics, v. 179, n. 2, p. 795-815, 2022.1420-91360033-4553http://hdl.handle.net/11449/22335610.1007/s00024-022-02951-y2-s2.0-85123642760Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPure and Applied Geophysicsinfo:eu-repo/semantics/openAccess2022-04-28T19:50:10Zoai:repositorio.unesp.br:11449/223356Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:37:51.362927Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Delineation and Quasi-3D Modeling of Gold Mineralization Using Self-Potential (SP), Electrical Resistivity Tomography (ERT), and Induced Polarization (IP) Methods in Yassa Village, Adamawa, Cameroon: A Case Study |
title |
Delineation and Quasi-3D Modeling of Gold Mineralization Using Self-Potential (SP), Electrical Resistivity Tomography (ERT), and Induced Polarization (IP) Methods in Yassa Village, Adamawa, Cameroon: A Case Study |
spellingShingle |
Delineation and Quasi-3D Modeling of Gold Mineralization Using Self-Potential (SP), Electrical Resistivity Tomography (ERT), and Induced Polarization (IP) Methods in Yassa Village, Adamawa, Cameroon: A Case Study Embeng, Steve Barthélémy Ngoa 3D modeling electrical resistivity tomography induced polarization Mineral exploration natural electric potential sulfides |
title_short |
Delineation and Quasi-3D Modeling of Gold Mineralization Using Self-Potential (SP), Electrical Resistivity Tomography (ERT), and Induced Polarization (IP) Methods in Yassa Village, Adamawa, Cameroon: A Case Study |
title_full |
Delineation and Quasi-3D Modeling of Gold Mineralization Using Self-Potential (SP), Electrical Resistivity Tomography (ERT), and Induced Polarization (IP) Methods in Yassa Village, Adamawa, Cameroon: A Case Study |
title_fullStr |
Delineation and Quasi-3D Modeling of Gold Mineralization Using Self-Potential (SP), Electrical Resistivity Tomography (ERT), and Induced Polarization (IP) Methods in Yassa Village, Adamawa, Cameroon: A Case Study |
title_full_unstemmed |
Delineation and Quasi-3D Modeling of Gold Mineralization Using Self-Potential (SP), Electrical Resistivity Tomography (ERT), and Induced Polarization (IP) Methods in Yassa Village, Adamawa, Cameroon: A Case Study |
title_sort |
Delineation and Quasi-3D Modeling of Gold Mineralization Using Self-Potential (SP), Electrical Resistivity Tomography (ERT), and Induced Polarization (IP) Methods in Yassa Village, Adamawa, Cameroon: A Case Study |
author |
Embeng, Steve Barthélémy Ngoa |
author_facet |
Embeng, Steve Barthélémy Ngoa Meying, Arsène Ndougsa-Mbarga, Théophile Moreira, César Augusto [UNESP] Amougou, Olivier Ulrich Owono |
author_role |
author |
author2 |
Meying, Arsène Ndougsa-Mbarga, Théophile Moreira, César Augusto [UNESP] Amougou, Olivier Ulrich Owono |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
University of Yaoundé I University of Ngaoundéré Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Embeng, Steve Barthélémy Ngoa Meying, Arsène Ndougsa-Mbarga, Théophile Moreira, César Augusto [UNESP] Amougou, Olivier Ulrich Owono |
dc.subject.por.fl_str_mv |
3D modeling electrical resistivity tomography induced polarization Mineral exploration natural electric potential sulfides |
topic |
3D modeling electrical resistivity tomography induced polarization Mineral exploration natural electric potential sulfides |
description |
The Lom volcano-sedimentary formation belongs to the Adamawa-Yadé (AYD) domain of the Pan-African fold belt in Cameroon. It is a geological formation presenting mineral deposits of economic potential such as gold and diamonds. The area is under small-scale and many artisanal gold mines. A geophysical study was carried out in the village Yassa, a locality situated within this geological formation, close to an artisanal mining excavation in order to define and propose a model of potential mineralized targets. The geophysical study involved the combination of electrical resistivity tomography (ERT), induced polarization (IP), and self-potential (SP) methods. The acquisition of data consisted of 15 electrical tomography lines in Schlumberger arrangement and a collection of SP data along these profiles in the absence of injected current. The anomalies of possible sulfide mineralization were found at a depth of about 10–25 m with a major NE–SW trend by applying the Euler deconvolution to the SP data. The ERT and IP data allow the production of the 2D inversion which is interpolated to obtain pseudo-models of the isosurface of potential mineralization. The correlation of geological information and the 3D isosurface pseudo-models indicates the characterization of zones with sulfides, with high chargeability values (≥ 30 mV/V). A body exhibiting this high chargeability correlating with a low resistivity (≤ 60 Ω m) is observed south of the study area. This body linked to a sulfurized zone presents its roof at an average depth of 13 m with a lateral extension in depth and a NE–SW orientation in agreement with the overall orientation of the area’s major tectonic lines. Another polarizable body, located in the near surface to the north of the study prospect over an average depth of about 10 m, correlates with high resistivity (4500 Ω m), thus characterizing a probable zone of silicification. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-04-28T19:50:10Z 2022-04-28T19:50:10Z 2022-02-01 |
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://dx.doi.org/10.1007/s00024-022-02951-y Pure and Applied Geophysics, v. 179, n. 2, p. 795-815, 2022. 1420-9136 0033-4553 http://hdl.handle.net/11449/223356 10.1007/s00024-022-02951-y 2-s2.0-85123642760 |
url |
http://dx.doi.org/10.1007/s00024-022-02951-y http://hdl.handle.net/11449/223356 |
identifier_str_mv |
Pure and Applied Geophysics, v. 179, n. 2, p. 795-815, 2022. 1420-9136 0033-4553 10.1007/s00024-022-02951-y 2-s2.0-85123642760 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Pure and Applied Geophysics |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
795-815 |
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 |
|
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1808128680756510720 |