Oblique thrust fault in Colombia
The Cimitarra Fault (Spanish : Falla de Cimitarra ) is a sinistral oblique thrust fault in the departments of Antioquia , Bolívar and Santander in central Colombia . The fault has a total length of 136.5 kilometres (84.8 mi) and runs along an average northeast to southwest strike of 323 ± 3 in the Middle Magdalena Valley and Central Ranges of the Colombian Andes .
Etymology
The fault is named after the Cimitarra River , Antioquia , a left tributary of the Magdalena River .[ 1]
Description
The Cimitarra Fault splays from the Palestina Fault in a northeasterly direction on the eastern border of the Central Ranges of the Colombian Andes ,[ 1] Barrancabermeja ,[ 2] Bucaramanga-Santa Marta Fault in the northeast.[ 3] Jurassic to Cretaceous volcanic rocks , Mesozoic igneous rocks , a Tertiary erosion surface in the Central Ranges, and late Quaternary sediments. Portions of the fault are pre-Pliocene in age, since it is locally covered by undeformed Pliocene sediments. Farther northeast, the fault is overlain by young alluvial deposits of the Middle Magdalena Valley .[ 1]
The fault is marked by well preserved fault scarps , long straight traces, displaced drainages, and it forms aligned river courses. The slip rate is calculated at 0.1 to 1 millimetre (0.0039 to 0.0394 in) per year.[ 4]
See also
References
^ a b c Paris et al., 2000a, p.30
^ Paris et al., 2000b
^ Plancha 5-06, 2015
^ Paris et al., 2000a, p.31
Bibliography
Maps
Gómez, J.; Montes, N.E.; Nivia, Á.; Diederix, H. (2015), Plancha 5-06 del Atlas Geológico de Colombia – 1:500,000 Servicio Geológico Colombiano , p. 1, retrieved 2017-06-06 Paris, Gabriel; Machette, Michael N.; Dart, Richard L.; Haller, Kathleen M. (2000b), Map of Quaternary Faults and Folds of Colombia and Its Offshore Regions (PDF) , USGS , p. 1, retrieved 2017-09-18
Further reading
Page, W.D (1986), Seismic geology and seismicity of Northwestern Colombia , San Francisco, California, Woodward-Clyde Consultants Report for ISA and Integral Ltda., Medellín, pp. 1– 200
Tectonic plates Terranes Terrane-bounding Intraterrane
Major Orogenies Other topics Sources Paris, Gabriel; Machette, Michael N.; Dart, Richard L.; Haller, Kathleen M. (2000). Map and Database of Quaternary Faults and Folds in Colombia and its Offshore Regions (PDF) . USGS . pp. 1– 66. Retrieved 2017-06-20 . Gómez Tapias, Jorge; Montes Ramírez, Nohora E.; Almanza Meléndez, María F.; Alcárcel Gutiérrez, Fernando A.; Madrid Montoya, César A.; Diederix, Hans (2015). Geological Map of Colombia Servicio Geológico Colombiano . pp. 1– 212. Retrieved 2019-10-29 .
Various authors (2014). Enciclopedia de desastres naturales históricos de Colombia (PDF) . Universidad del Quindío . pp. 1– 21. Retrieved 2017-06-20 .
Information related to Cimitarra Fault
