Reactivation (long-term evolution) of silvia-pijao fault along the “quebrada la maizena “western flank of central cordillera, quindio- colombia.

The macro and microstructural characteristics of rocks along the lower portion of the “Quebradala Maizena”, in the influence zone of the Silvia- Pijao Fault, one of the major faults related to theRomeral Fault Zone (RFZ), allow to interpet a long history of deformation. These rocks belong tothe Queb...

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Autores:
Camargo Cortez, Guillermo Arturo
Mojica, Jairo
Tipo de recurso:
Article of journal
Fecha de publicación:
2004
Institución:
Universidad Nacional de Colombia
Repositorio:
Universidad Nacional de Colombia
Idioma:
spa
OAI Identifier:
oai:repositorio.unal.edu.co:unal/42312
Acceso en línea:
https://repositorio.unal.edu.co/handle/unal/42312
http://bdigital.unal.edu.co/32409/
Palabra clave:
Geociencias
Geología Estructural
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openAccess
License
Atribución-NoComercial 4.0 Internacional
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repository_id_str
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_abf2Camargo Cortez, Guillermo Arturoa103e08e-49fc-430c-91d9-fd18897c7b11300Mojica, Jairo60c8ebaa-ce0a-458a-891e-31533e14796c3002019-06-28T10:42:49Z2019-06-28T10:42:49Z2004https://repositorio.unal.edu.co/handle/unal/42312http://bdigital.unal.edu.co/32409/The macro and microstructural characteristics of rocks along the lower portion of the “Quebradala Maizena”, in the influence zone of the Silvia- Pijao Fault, one of the major faults related to theRomeral Fault Zone (RFZ), allow to interpet a long history of deformation. These rocks belong tothe Quebradagrande and Arquía Complexes. Along the section, structural data and samples forthin sections analysis were obtained mostly in the western block adjacent to the main fault trace.Metamorphic rocks include amphibolites and hornblende - garnet - zoisite ± chlorite ± muscovite± graphite schists. Igneous bodies are granodiorite and highly serpentinized dunite. Sedimentaryrocks are mostly sandstones and calcareous mudstones. These sedimentary rocks exhibit faultedcontacts and lenticular geometry. Most fault rocks are brittle cataclastic rocks. They include breccias,microbreccias, gouge and foliated gouge. In some samples, plastic deformation is inferred frommicroscopic bands of reduced grain size (mostly in quartz), deformation bands and undulose patchyand sweeping extinction in quartz, and to a lesser extent in plagioclase, indicating an incipientdevelopment of mylonitic textures formed at low-grade metamorphic conditions. This suggests anolder record of localized deformation. These microstructures and other outcrop scale structures suchas thrust systems (duplexes and imbricates), strike-slip and normal faults with dip and obliquecomponents of movement, tectonic foliation, varying fault cross-cutting relationships and presenceof sedimentary slices and ultrabasic serpentinized bodies along the fault zone suggest a multi-statebrittle deformation and multiple reactivation of some of the fault zones.application/pdfspaDepartamento de Geocienciashttp://revistas.unal.edu.co/index.php/geocol/article/view/31918Universidad Nacional de Colombia Revistas electrónicas UN Geología ColombianaGeología ColombianaGeología Colombiana - An International Journal on Geosciences; Vol. 29 (2004); 11-22 Geología Colombiana; Vol. 29 (2004); 11-22 2357-3767 0072-0992Camargo Cortez, Guillermo Arturo and Mojica, Jairo (2004) Reactivation (long-term evolution) of silvia-pijao fault along the “quebrada la maizena “western flank of central cordillera, quindio- colombia. Geología Colombiana - An International Journal on Geosciences; Vol. 29 (2004); 11-22 Geología Colombiana; Vol. 29 (2004); 11-22 2357-3767 0072-0992 .Reactivation (long-term evolution) of silvia-pijao fault along the “quebrada la maizena “western flank of central cordillera, quindio- colombia.Artículo 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/ARTGeocienciasGeología EstructuralORIGINAL31918-116662-1-PB.pdfapplication/pdf3545376https://repositorio.unal.edu.co/bitstream/unal/42312/1/31918-116662-1-PB.pdf08b4e6f128f716b117bcc2c5e83afe73MD51THUMBNAIL31918-116662-1-PB.pdf.jpg31918-116662-1-PB.pdf.jpgGenerated Thumbnailimage/jpeg7645https://repositorio.unal.edu.co/bitstream/unal/42312/2/31918-116662-1-PB.pdf.jpg5e96fcd822b567ac6191fe515545cc2aMD52unal/42312oai:repositorio.unal.edu.co:unal/423122024-02-04 23:06:43.199Repositorio Institucional Universidad Nacional de Colombiarepositorio_nal@unal.edu.co
dc.title.spa.fl_str_mv Reactivation (long-term evolution) of silvia-pijao fault along the “quebrada la maizena “western flank of central cordillera, quindio- colombia.
title Reactivation (long-term evolution) of silvia-pijao fault along the “quebrada la maizena “western flank of central cordillera, quindio- colombia.
spellingShingle Reactivation (long-term evolution) of silvia-pijao fault along the “quebrada la maizena “western flank of central cordillera, quindio- colombia.
Geociencias
Geología Estructural
title_short Reactivation (long-term evolution) of silvia-pijao fault along the “quebrada la maizena “western flank of central cordillera, quindio- colombia.
title_full Reactivation (long-term evolution) of silvia-pijao fault along the “quebrada la maizena “western flank of central cordillera, quindio- colombia.
title_fullStr Reactivation (long-term evolution) of silvia-pijao fault along the “quebrada la maizena “western flank of central cordillera, quindio- colombia.
title_full_unstemmed Reactivation (long-term evolution) of silvia-pijao fault along the “quebrada la maizena “western flank of central cordillera, quindio- colombia.
title_sort Reactivation (long-term evolution) of silvia-pijao fault along the “quebrada la maizena “western flank of central cordillera, quindio- colombia.
dc.creator.fl_str_mv Camargo Cortez, Guillermo Arturo
Mojica, Jairo
dc.contributor.author.spa.fl_str_mv Camargo Cortez, Guillermo Arturo
Mojica, Jairo
dc.subject.proposal.spa.fl_str_mv Geociencias
Geología Estructural
topic Geociencias
Geología Estructural
description The macro and microstructural characteristics of rocks along the lower portion of the “Quebradala Maizena”, in the influence zone of the Silvia- Pijao Fault, one of the major faults related to theRomeral Fault Zone (RFZ), allow to interpet a long history of deformation. These rocks belong tothe Quebradagrande and Arquía Complexes. Along the section, structural data and samples forthin sections analysis were obtained mostly in the western block adjacent to the main fault trace.Metamorphic rocks include amphibolites and hornblende - garnet - zoisite ± chlorite ± muscovite± graphite schists. Igneous bodies are granodiorite and highly serpentinized dunite. Sedimentaryrocks are mostly sandstones and calcareous mudstones. These sedimentary rocks exhibit faultedcontacts and lenticular geometry. Most fault rocks are brittle cataclastic rocks. They include breccias,microbreccias, gouge and foliated gouge. In some samples, plastic deformation is inferred frommicroscopic bands of reduced grain size (mostly in quartz), deformation bands and undulose patchyand sweeping extinction in quartz, and to a lesser extent in plagioclase, indicating an incipientdevelopment of mylonitic textures formed at low-grade metamorphic conditions. This suggests anolder record of localized deformation. These microstructures and other outcrop scale structures suchas thrust systems (duplexes and imbricates), strike-slip and normal faults with dip and obliquecomponents of movement, tectonic foliation, varying fault cross-cutting relationships and presenceof sedimentary slices and ultrabasic serpentinized bodies along the fault zone suggest a multi-statebrittle deformation and multiple reactivation of some of the fault zones.
publishDate 2004
dc.date.issued.spa.fl_str_mv 2004
dc.date.accessioned.spa.fl_str_mv 2019-06-28T10:42:49Z
dc.date.available.spa.fl_str_mv 2019-06-28T10:42:49Z
dc.type.spa.fl_str_mv Artículo de revista
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dc.type.content.spa.fl_str_mv Text
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format http://purl.org/coar/resource_type/c_6501
status_str publishedVersion
dc.identifier.uri.none.fl_str_mv https://repositorio.unal.edu.co/handle/unal/42312
dc.identifier.eprints.spa.fl_str_mv http://bdigital.unal.edu.co/32409/
url https://repositorio.unal.edu.co/handle/unal/42312
http://bdigital.unal.edu.co/32409/
dc.language.iso.spa.fl_str_mv spa
language spa
dc.relation.spa.fl_str_mv http://revistas.unal.edu.co/index.php/geocol/article/view/31918
dc.relation.ispartof.spa.fl_str_mv Universidad Nacional de Colombia Revistas electrónicas UN Geología Colombiana
Geología Colombiana
dc.relation.ispartofseries.none.fl_str_mv Geología Colombiana - An International Journal on Geosciences; Vol. 29 (2004); 11-22 Geología Colombiana; Vol. 29 (2004); 11-22 2357-3767 0072-0992
dc.relation.references.spa.fl_str_mv Camargo Cortez, Guillermo Arturo and Mojica, Jairo (2004) Reactivation (long-term evolution) of silvia-pijao fault along the “quebrada la maizena “western flank of central cordillera, quindio- colombia. Geología Colombiana - An International Journal on Geosciences; Vol. 29 (2004); 11-22 Geología Colombiana; Vol. 29 (2004); 11-22 2357-3767 0072-0992 .
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
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http://creativecommons.org/licenses/by-nc/4.0/
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eu_rights_str_mv openAccess
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dc.publisher.spa.fl_str_mv Departamento de Geociencias
institution Universidad Nacional de Colombia
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