Abriaquí Fault

Abriaquí Fault
Falla de Abriaquí
Map showing the location of Abriaquí Fault
Etymology Abriaquí
Country  Colombia
Region Andean
State Antioquia
Characteristics
Range Western Ranges, Andes
Part of Andean oblique faults
Length 33.8 km (21.0 mi)
Strike 311 ± 2
Dip Northeast
Dip angle High
Displacement 0.2–1 mm (0.0079–0.0394 in)/yr
Tectonics
Plate North Andean
Status Inactive
Type Oblique thrust fault
Movement Reverse sinistral
Age Quaternary
Orogeny Andean

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.

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. 1 2 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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