Montenegro Fault

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Montenegro Fault
Falla de Montenegro
Map showing the location of Montenegro Fault
Map showing the location of Montenegro Fault
Etymology Montenegro
Country  Colombia
Region Andean
State Quindío
Characteristics
Range Central Ranges, Andes
Part of Romeral Fault System
Length 21.7 km (13.5 mi)
Strike 025.1 ± 9
Dip West
Dip angle High
Displacement 0.1 mm (0.0039 in)/yr
Tectonics
Plate North Andean
Status Inactive
Type Oblique strike-slip fault
Movement Normal sinistral
Age Quaternary
Orogeny Andean

The Montenegro Fault (Spanish: Falla de Montenegro) is an oblique sinistral strike-slip fault in the department of Quindío in west-central Colombia. The fault is part of the megaregional Romeral Fault System and has a total length of 21.7 kilometres (13.5 mi) and runs along an average northwest to southeast strike of 025.1 ± 9 in the Central Ranges of the Colombian Andes.

Etymology

The fault is named after Montenegro, Quindío.[1]

Description

The 21.7 kilometres (13.5 mi) Montenegro Fault is part of the Romeral Fault System, running through the western slope of the Central Ranges. The fault is located to the west of the city of Armenia. The fault crosscuts and deforms the Pleistocene volcanic and volcano-sedimentary deposits of the Quindío Fan (Spanish: Abanico del Quindío), which covers about 400 square kilometres (150 sq mi).[1]

The Montenegro Fault forms outstanding fault scarps as much as 60 metres (200 ft) in height, beheaded streams, hanging valleys, ponded alluvium, aligned and offset drainages, as well as soil and rock slides on the face of the scarps. The fault deforms Quaternary volcanic debris flows and ash deposits.[2] The Espejo River follows the strike of the Montenegro Fault.[3]

See also

References

  1. ^ a b Paris et al., 2000a, p.20
  2. ^ Paris et al., 2000a, p.21
  3. ^ Mapa Geológico de Quindío, 2000

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

  • 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.
  • Mosquera, D. 2000. Mapa Geológico de Quindío 1:100,000, 1. INGEOMINAS. Accessed 2017-09-21.

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.
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