La Macarena Fault

La Macarena Fault
Falla de La Macarena
The fault borders the east side of the Serranía de la Macarena in Meta
Etymology	Serranía de la Macarena
Coordinates	02°31′36″N 73°52′18″W
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.

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.

See also

• List of earthquakes in Colombia
• Bucaramanga-Santa Marta Fault
• Eastern Frontal Fault System

References

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.