Publicado

2004-01-01

Reactivation (long-term evolution) of Silvia-Pijao Fault along the “Quebrada la Maizena “western flank of Central Cordillera, Quindio- Colombia.

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Autores/as

  • Guillermo Arturo Camargo Cortez
  • Jairo Mojica
The macro and microstructural characteristics of rocks along the lower portion of the “Quebrada
la Maizena”, in the influence zone of the Silvia- Pijao Fault, one of the major faults related to the
Romeral Fault Zone (RFZ), allow to interpet a long history of deformation. These rocks belong to
the Quebradagrande and Arquía Complexes. Along the section, structural data and samples for
thin 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. Sedimentary
rocks are mostly sandstones and calcareous mudstones. These sedimentary rocks exhibit faulted
contacts 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 from
microscopic bands of reduced grain size (mostly in quartz), deformation bands and undulose patchy
and sweeping extinction in quartz, and to a lesser extent in plagioclase, indicating an incipient
development of mylonitic textures formed at low-grade metamorphic conditions. This suggests an
older record of localized deformation. These microstructures and other outcrop scale structures such
as thrust systems (duplexes and imbricates), strike-slip and normal faults with dip and oblique
components of movement, tectonic foliation, varying fault cross-cutting relationships and presence
of sedimentary slices and ultrabasic serpentinized bodies along the fault zone suggest a multi-state
brittle deformation and multiple reactivation of some of the fault zones.

Cómo citar

APA

Camargo Cortez, G. A. y Mojica, J. (2004). Reactivation (long-term evolution) of Silvia-Pijao Fault along the “Quebrada la Maizena “western flank of Central Cordillera, Quindio- Colombia. Geología Colombiana, 29, 11–22. https://revistas.unal.edu.co/index.php/geocol/article/view/31918

ACM

[1]
Camargo Cortez, G.A. y Mojica, J. 2004. Reactivation (long-term evolution) of Silvia-Pijao Fault along the “Quebrada la Maizena “western flank of Central Cordillera, Quindio- Colombia. Geología Colombiana. 29, (ene. 2004), 11–22.

ACS

(1)
Camargo Cortez, G. A.; Mojica, J. Reactivation (long-term evolution) of Silvia-Pijao Fault along the “Quebrada la Maizena “western flank of Central Cordillera, Quindio- Colombia. Geología Colombiana 2004, 29, 11-22.

ABNT

CAMARGO CORTEZ, G. A.; MOJICA, J. Reactivation (long-term evolution) of Silvia-Pijao Fault along the “Quebrada la Maizena “western flank of Central Cordillera, Quindio- Colombia. Geología Colombiana, [S. l.], v. 29, p. 11–22, 2004. Disponível em: https://revistas.unal.edu.co/index.php/geocol/article/view/31918. Acesso em: 28 mar. 2024.

Chicago

Camargo Cortez, Guillermo Arturo, y Jairo Mojica. 2004. « Quindio- Colombia». Geología Colombiana 29 (enero):11-22. https://revistas.unal.edu.co/index.php/geocol/article/view/31918.

Harvard

Camargo Cortez, G. A. y Mojica, J. (2004) « Quindio- Colombia»., Geología Colombiana, 29, pp. 11–22. Disponible en: https://revistas.unal.edu.co/index.php/geocol/article/view/31918 (Accedido: 28 marzo 2024).

IEEE

[1]
G. A. Camargo Cortez y J. Mojica, « Quindio- Colombia»., Geología Colombiana, vol. 29, pp. 11–22, ene. 2004.

MLA

Camargo Cortez, G. A., y J. Mojica. « Quindio- Colombia». Geología Colombiana, vol. 29, enero de 2004, pp. 11-22, https://revistas.unal.edu.co/index.php/geocol/article/view/31918.

Turabian

Camargo Cortez, Guillermo Arturo, y Jairo Mojica. « Quindio- Colombia». Geología Colombiana 29 (enero 1, 2004): 11–22. Accedido marzo 28, 2024. https://revistas.unal.edu.co/index.php/geocol/article/view/31918.

Vancouver

1.
Camargo Cortez GA, Mojica J. Reactivation (long-term evolution) of Silvia-Pijao Fault along the “Quebrada la Maizena “western flank of Central Cordillera, Quindio- Colombia. Geología Colombiana [Internet]. 1 de enero de 2004 [citado 28 de marzo de 2024];29:11-22. Disponible en: https://revistas.unal.edu.co/index.php/geocol/article/view/31918

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