Misplaced Pages

Córdoba-Navarco Fault

Article snapshot taken from[REDACTED] with creative commons attribution-sharealike license. Give it a read and then ask your questions in the chat. We can research this topic together.
Fault in the department of Quindío, Colombia
Córdoba-Navarco Fault
Falla Córdoba-Navarco
Map showing the location of Córdoba-Navarco FaultMap showing the location of Córdoba-Navarco Fault
EtymologyCórdoba & Navarco River
Coordinates04°20′34″N 75°42′08″W / 4.34278°N 75.70222°W / 4.34278; -75.70222
Country Colombia
RegionAndean
StateQuindío
Characteristics
RangeCentral Ranges
Part ofRomeral Fault System
Length21.2 km (13.2 mi)
Strike018.5 ± 4
DipVertical
Displacement<0.2 mm (0.0079 in)/yr
Tectonics
PlateNorth Andean
StatusActive
Earthquakes1999 Armenia (Mw 6.1)
TypeStrike-slip fault
MovementSinistral
Rock unitsCórdoba & Quebradagrande Complexes
AgeQuaternary
OrogenyAndean

The Córdoba-Navarco Fault (Spanish: Falla Córdoba-Navarco) is a sinistral strike-slip fault in the department of Quindío in west-central Colombia. The fault has a total length of 21.2 kilometres (13.2 mi) and runs along an average north-northeast to south-southwest strike of 018.5 ± 4 in the Central Ranges of the Colombian Andes.

The fault segment pertaining to the megaregional Romeral Fault System is a set of two faults that are active, causing the major 1999 Armenia earthquake with approximately 1185 fatalities.

Etymology

The fault is named after Córdoba and the Navarco River in Quindío.

Description

See also: Romeral Fault System
ShakeMap of the 1999 Armenia earthquake

The fault section is formed by the Córdoba and Navarco Faults, which are eastern strands of Romeral Fault System, south of the city of Armenia. These faults lie within the epicenter area of the Armenia earthquake of January 25, 1999. The faults extend through sheared cataclastic and undeformed basaltic and sedimentary Cretaceous oceanic rocks, cropping out on the eastern slope of the Central Ranges of Colombia. It separates the Córdoba Complex from the Quebradagrande Complex.

Well preserved fault trace controls stream drainages. The Córdoba-Navarco Fault forms fault saddles and eroded fault scarps. Neotectonic features are not very outstanding. Slopes in this part of the Central Ranges are rather steep, so erosion rate is high.

The fault terminates in the south against the Ibagué Fault.

Activity

Main article: 1999 Armenia, Colombia earthquake

On January 25, 1999, a major earthquake hit the capitals of Quindío, Armenia, and Risaralda, Pereira. The earthquake had a moment magnitude of 6.1 and an intensity of X and occurred at a depth of 17.0 kilometres (55,800 ft). The natural disaster caused around 1185 casualties in central Colombia and was the strongest earthquake in 16 years.

See also

References

  1. ^ Paris et al., 2000a, p.25
  2. Mapa Geológico de Quindío, 2000
  3. Paris et al., 2000b
  4. USGS. "M 6.1 - Colombia". United States Geological Survey. Retrieved 2017-09-18.
  5. Various Authors, 1999, p.10

Bibliography

Maps

Tectonism in Colombia
Tectonic plates
Terranes
Terrane-bounding
fault systems
Intraterrane
faults
Chibcha
Tahamí
Caribe
La Guajira
Other terranes
Major
earthquakes
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.
Category • Images
Categories:
Córdoba-Navarco Fault Add topic