La Macarena Fault

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La Macarena Fault
Falla de La Macarena
Meta Topographic 2.png
The fault borders the east side of the Serranía de la Macarena in Meta
Map showing the location of La Macarena Fault
Map showing the location of La Macarena Fault
Etymology Serranía de la Macarena
Country  Colombia
Region Amazon
State Meta
Cities La Macarena, Vista Hermosa
Characteristics
Range Serranía de la Macarena
Length 50.3 km (31.3 mi)
Strike 000.6 ± 9
Dip West
Dip angle unknown
Displacement <0.2 mm (0.0079 in)/yr
Tectonics
Plate South American
Status Inactive
Type Thrust fault
Movement Reverse
Age Quaternary
Orogeny Andean

The La Macarena Fault (Spanish: Falla de La Macarena) is a thrust fault in the department of Meta in Colombia. The fault has a total length of 50.3 kilometres (31.3 mi) and runs along an average north to south strike of 000.6 ± 9 along the east side of the Serranía de la Macarena.

Etymology

The fault is named after the Serranía de la Macarena.[1]

Description

The Macarena Fault extends along the eastern border of the Serranía de la Macarena, which is an isolated tectonic block to the east of the Eastern Ranges of the Colombian Andes. The fault thrusts Precambrian crystalline rocks and Tertiary oceanic rocks on the west over Tertiary and Pleistocene continental rocks on the east. The course of the Guayabero River is controlled by the fault, showing strong lineations. Pleistocene sediments and alluvial terraces are apparently offset. There is a prominent fault scarp on the west side of the river.[1]

See also

References

  1. ^ a b Paris et al., 2000, p.47

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.

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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