Interpreting gravity anomalies in south cameroon, central africa

The area involved in this study is the northern part of the Congo craton, located in south Cameroon, (2.5°N - 4.5°N, 11°E - 13°E). The study involved analysing gravity data to delineate major structures and faults in south Cameroon. The region’s Bouguer gravity is characterised by elongated SW-NE ne...

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Autores:
Shandini, Yves
Tadjou, Jean Marie
Tipo de recurso:
Article of journal
Fecha de publicación:
2012
Institución:
Universidad Nacional de Colombia
Repositorio:
Universidad Nacional de Colombia
Idioma:
spa
OAI Identifier:
oai:repositorio.unal.edu.co:unal/43603
Acceso en línea:
https://repositorio.unal.edu.co/handle/unal/43603
http://bdigital.unal.edu.co/33701/
http://bdigital.unal.edu.co/33701/2/
Palabra clave:
fault
gravity data
isostatic residual gravity
south Cameroon
total horizontal derivative.
Rights
openAccess
License
Atribución-NoComercial 4.0 Internacional
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spelling Atribución-NoComercial 4.0 InternacionalDerechos reservados - Universidad Nacional de Colombiahttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Shandini, Yves9a7bebe9-fabb-438b-8a97-8aa70602f56a300Tadjou, Jean Marie770ff00a-deab-4b38-8972-419d7cdf78d13002019-06-28T12:11:40Z2019-06-28T12:11:40Z2012https://repositorio.unal.edu.co/handle/unal/43603http://bdigital.unal.edu.co/33701/http://bdigital.unal.edu.co/33701/2/The area involved in this study is the northern part of the Congo craton, located in south Cameroon, (2.5°N - 4.5°N, 11°E - 13°E). The study involved analysing gravity data to delineate major structures and faults in south Cameroon. The region’s Bouguer gravity is characterised by elongated SW-NE negative gravity anomaly corresponding to a collapsed structure associated with a granitic intrusion beneath the region, limited by fault systems; this was clearly evident on an isostatic residual gravity map. High gravity anomaly within the northern part of the area was interpreted as a result of dense bodies put in place at the root of the crust. Positive anomalies in the northern part of the area were separated from southern negative anomalies by a prominent E-W lineament; this was interpreted on the gravity maps as a suture zone between the south Congo craton and the Pan-African formations. Gravity anomalies’ total horizontal derivatives generally reflect faults or compositional changes which can describe structural trends. The local maxima of the Bouguer gravity data’s horizontal gradient grid and its upward continuation at various altitudes were used to highlight the deepest lineament faults and their dip and direction. These features led to producing a structural map of the study area.application/pdfspaUNIVERSIDAD NACIONAL DE COLOMBIAhttp://revistas.unal.edu.co/index.php/esrj/article/view/33591Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research JournalEarth Sciences Research JournalEarth Sciences Research Journal; Vol. 16, núm. 1 (2012); 5-9 Earth Sciences Research Journal; Vol. 16, núm. 1 (2012); 5-9 2339-3459 1794-6190Shandini, Yves and Tadjou, Jean Marie (2012) Interpreting gravity anomalies in south cameroon, central africa. Earth Sciences Research Journal; Vol. 16, núm. 1 (2012); 5-9 Earth Sciences Research Journal; Vol. 16, núm. 1 (2012); 5-9 2339-3459 1794-6190 .Interpreting gravity anomalies in south cameroon, central africaArtículo de revistainfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501http://purl.org/coar/resource_type/c_2df8fbb1http://purl.org/coar/version/c_970fb48d4fbd8a85Texthttp://purl.org/redcol/resource_type/ARTfaultgravity dataisostatic residual gravitysouth Cameroontotal horizontal derivative.ORIGINAL33591-124780-1-PB.pdfapplication/pdf2701619https://repositorio.unal.edu.co/bitstream/unal/43603/1/33591-124780-1-PB.pdf1588c5fc82a7c9932d67ac113f31a404MD51THUMBNAIL33591-124780-1-PB.pdf.jpg33591-124780-1-PB.pdf.jpgGenerated Thumbnailimage/jpeg7633https://repositorio.unal.edu.co/bitstream/unal/43603/2/33591-124780-1-PB.pdf.jpg21eb95947640e3725c7d315a83877c2bMD52unal/43603oai:repositorio.unal.edu.co:unal/436032024-02-11 23:18:22.919Repositorio Institucional Universidad Nacional de Colombiarepositorio_nal@unal.edu.co
dc.title.spa.fl_str_mv Interpreting gravity anomalies in south cameroon, central africa
title Interpreting gravity anomalies in south cameroon, central africa
spellingShingle Interpreting gravity anomalies in south cameroon, central africa
fault
gravity data
isostatic residual gravity
south Cameroon
total horizontal derivative.
title_short Interpreting gravity anomalies in south cameroon, central africa
title_full Interpreting gravity anomalies in south cameroon, central africa
title_fullStr Interpreting gravity anomalies in south cameroon, central africa
title_full_unstemmed Interpreting gravity anomalies in south cameroon, central africa
title_sort Interpreting gravity anomalies in south cameroon, central africa
dc.creator.fl_str_mv Shandini, Yves
Tadjou, Jean Marie
dc.contributor.author.spa.fl_str_mv Shandini, Yves
Tadjou, Jean Marie
dc.subject.proposal.spa.fl_str_mv fault
gravity data
isostatic residual gravity
south Cameroon
total horizontal derivative.
topic fault
gravity data
isostatic residual gravity
south Cameroon
total horizontal derivative.
description The area involved in this study is the northern part of the Congo craton, located in south Cameroon, (2.5°N - 4.5°N, 11°E - 13°E). The study involved analysing gravity data to delineate major structures and faults in south Cameroon. The region’s Bouguer gravity is characterised by elongated SW-NE negative gravity anomaly corresponding to a collapsed structure associated with a granitic intrusion beneath the region, limited by fault systems; this was clearly evident on an isostatic residual gravity map. High gravity anomaly within the northern part of the area was interpreted as a result of dense bodies put in place at the root of the crust. Positive anomalies in the northern part of the area were separated from southern negative anomalies by a prominent E-W lineament; this was interpreted on the gravity maps as a suture zone between the south Congo craton and the Pan-African formations. Gravity anomalies’ total horizontal derivatives generally reflect faults or compositional changes which can describe structural trends. The local maxima of the Bouguer gravity data’s horizontal gradient grid and its upward continuation at various altitudes were used to highlight the deepest lineament faults and their dip and direction. These features led to producing a structural map of the study area.
publishDate 2012
dc.date.issued.spa.fl_str_mv 2012
dc.date.accessioned.spa.fl_str_mv 2019-06-28T12:11:40Z
dc.date.available.spa.fl_str_mv 2019-06-28T12:11:40Z
dc.type.spa.fl_str_mv Artículo de revista
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http://bdigital.unal.edu.co/33701/2/
url https://repositorio.unal.edu.co/handle/unal/43603
http://bdigital.unal.edu.co/33701/
http://bdigital.unal.edu.co/33701/2/
dc.language.iso.spa.fl_str_mv spa
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dc.relation.spa.fl_str_mv http://revistas.unal.edu.co/index.php/esrj/article/view/33591
dc.relation.ispartof.spa.fl_str_mv Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal
Earth Sciences Research Journal
dc.relation.ispartofseries.none.fl_str_mv Earth Sciences Research Journal; Vol. 16, núm. 1 (2012); 5-9 Earth Sciences Research Journal; Vol. 16, núm. 1 (2012); 5-9 2339-3459 1794-6190
dc.relation.references.spa.fl_str_mv Shandini, Yves and Tadjou, Jean Marie (2012) Interpreting gravity anomalies in south cameroon, central africa. Earth Sciences Research Journal; Vol. 16, núm. 1 (2012); 5-9 Earth Sciences Research Journal; Vol. 16, núm. 1 (2012); 5-9 2339-3459 1794-6190 .
dc.rights.spa.fl_str_mv Derechos reservados - Universidad Nacional de Colombia
dc.rights.coar.fl_str_mv http://purl.org/coar/access_right/c_abf2
dc.rights.license.spa.fl_str_mv Atribución-NoComercial 4.0 Internacional
dc.rights.uri.spa.fl_str_mv http://creativecommons.org/licenses/by-nc/4.0/
dc.rights.accessrights.spa.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv Atribución-NoComercial 4.0 Internacional
Derechos reservados - Universidad Nacional de Colombia
http://creativecommons.org/licenses/by-nc/4.0/
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
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dc.publisher.spa.fl_str_mv UNIVERSIDAD NACIONAL DE COLOMBIA
institution Universidad Nacional de Colombia
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