Abriaquí Fault

The Abriaquí Fault (Spanish: Falla de Abriaquí) is an oblique thrust fault in the department of Antioquia in northwestern Colombia. The fault has a total length of 33.8 kilometres (21.0 mi) and runs along an average northwest to southeast strike of 311 ± 2 in the Western Ranges of the Colombian Andes.

Abriaquí Fault
Falla de Abriaquí
EtymologyAbriaquí
Coordinates06°40′09″N 76°06′38″W
Country Colombia
RegionAndean
StateAntioquia
Characteristics
RangeWestern Ranges, Andes
Part ofAndean oblique faults
Length33.8 km (21.0 mi)
Strike311 ± 2
DipNortheast
Dip angleHigh
Displacement0.2–1 mm (0.0079–0.0394 in)/yr
Tectonics
PlateNorth Andean
StatusInactive
TypeOblique thrust fault
MovementReverse sinistral
AgeQuaternary
OrogenyAndean

Etymology

The fault is named after Abriaquí.[1]

Description

The Abriaquí Fault parallels the Cañasgordas Fault to the south, cutting Cretaceous oceanic volcanic rocks as well as Tertiary and Cretaceous sedimentary rocks. The fault has a well defined fault trace with scarps, saddles, and deflected streams. The slip rate is estimated at 0.2 to 1 millimetre (0.0079 to 0.0394 in) per year deduced from displaced geomorphologic features.[1]

See also

References
  1. Paris et al., 2000, p.18

Bibliography

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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