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 | |
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Falla de Abriaquí | |
Etymology | Abriaquí |
Coordinates | 06°40′09″N 76°06′38″W / 6.66917°N 76.11056°W |
Country | ![]() |
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 |
Etymology
editDescription
editThe 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
editReferences
editBibliography
edit- Paris, Gabriel; Machette, Michael N.; Dart, Richard L.; Haller, Kathleen M. (2000a), Map and Database of Quaternary Faults and Folds in Colombia and its Offshore Regions (PDF), USGS, pp. 1–66, retrieved 2017-09-18
Maps
edit- Paris, Gabriel; Machette, Michael N.; Dart, Richard L.; Haller, Kathleen M. (2000b), Map of Quaternary Faults and Folds of Colombia and Its Offshore Regions (PDF), USGS, p. 1, retrieved 2017-09-18
Further reading
edit- Page, W.D (1986), Seismic geology and seismicity of Northwestern Colombia, San Francisco, California, Woodward-Clyde Consultants Report for ISA and Integral Ltda., Medellín, pp. 1–200