La Macarena Fault

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.

La Macarena Fault
Falla de La Macarena
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
EtymologySerranía de la Macarena
Coordinates02°31′36″N 73°52′18″W
Country Colombia
RegionAmazon
StateMeta
CitiesLa Macarena, Vista Hermosa
Characteristics
RangeSerranía de la Macarena
Length50.3 km (31.3 mi)
Strike000.6 ± 9
DipWest
Dip angleunknown
Displacement<0.2 mm (0.0079 in)/yr
Tectonics
PlateSouth American
StatusInactive
TypeThrust fault
MovementReverse
AgeQuaternary
OrogenyAndean

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. 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

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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