Cimitarra Fault

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
Cimitarra Fault
Falla de Cimitarra
Map showing the location of Cimitarra Fault
Map showing the location of Cimitarra Fault
Etymology Cimitarra River
Country  Colombia
Region Andean
State Antioquia, Bolívar, Santander
Cities Cantagallo, Puerto Wilches
Characteristics
Range Central Ranges, Andes
Part of Andean oblique faults
Length 136.5 km (84.8 mi)
Strike 323 ± 3
Dip unknown
Dip angle unknown
Displacement 0.1–1 mm (0.0039–0.0394 in)/yr
Tectonics
Plate North Andean
Status Inactive
Type Oblique thrust fault
Movement Sinistral reverse
Age Quaternary
Orogeny Andean

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] passes north of Barrancabermeja,[2] and possibly connects to the Bucaramanga-Santa Marta Fault in the northeast.[3] The fault displaces 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

  1. ^ a b c Paris et al., 2000a, p.30
  2. ^ Paris et al., 2000b
  3. ^ Plancha 5-06, 2015
  4. ^ Paris et al., 2000a, p.31

Bibliography

  • Paris, Gabriel; Michael N. Machette; Richard L. Dart, and Kathleen M. Haller. 2000a. Map and Database of Quaternary Faults and Folds in Colombia and its Offshore Regions, 1–66. USGS. Accessed 2017-09-18.

Maps

  • Gómez, J.; N.E. Montes; Á. Nivia, and H. Diederix. 2015. Plancha 5-06 del Atlas Geológico de Colombia – 1:500,000, 1. Servicio Geológico Colombiano. Accessed 2017-06-06.
  • Paris, Gabriel; Michael N. Machette; Richard L. Dart, and Kathleen M. Haller. 2000b. Map of Quaternary Faults and Folds of Colombia and Its Offshore Regions, 1. USGS. Accessed 2017-09-18.

Further reading

  • Page, W.D. 1986. Seismic geology and seismicity of Northwestern Colombia, 1–200. San Francisco, California, Woodward-Clyde Consultants Report for ISA and Integral Ltda., Medellín.
Retrieved from "https://en.wikipedia.org/w/index.php?title=Cimitarra_Fault&oldid=844711623"
This content was retrieved from Wikipedia : http://en.wikipedia.org/wiki/Cimitarra_Fault
This page is based on the copyrighted Wikipedia article "Cimitarra Fault"; it is used under the Creative Commons Attribution-ShareAlike 3.0 Unported License (CC-BY-SA). You may redistribute it, verbatim or modified, providing that you comply with the terms of the CC-BY-SA