Bagre Norte Fault

Bagre Norte Fault
Bagre Norte Fault
Falla de Bagre Norte
Etymology	El Bagre
Coordinates	07°37′02″N 74°46′56″W / 7.61722°N 74.78222°W
Country	Colombia
Region	Andean, Caribbean
State	Antioquia, Bolívar
Characteristics
Range	Central Ranges, Andes & Serranía de San Lucas
Part of	Andean oblique faults
Length	159.3 km (99.0 mi)
Strike	359 ± 14
Dip	East
Dip angle	High
Displacement	<0.2 mm (0.0079 in)/yr
Tectonics
Plate	North Andean
Status	Inactive
Type	Oblique strike-slip fault
Movement	Sinistral reverse
Age	Quaternary
Orogeny	Andean

The Bagre Norte Fault (Spanish: Falla de Bagre Norte) is a sinistral oblique strike-slip fault in the departments of Antioquia and Bolívar in northern Colombia. The fault has a total length of 159.3 kilometres (99.0 mi) and runs along an average north to south strike of 359 ± 14 along the Central Ranges of the Colombian Andes and the Serranía de San Lucas.

Etymology

The fault is named after El Bagre.^[1]

Description

The Bagre Norte Fault branches from the Palestina Fault, close to the Alicante River. The fault juxtaposes Precambrian metamorphic rocks on the east against sedimentary rocks in the west. The fault shows as a prominent topographic lineament on satellite images and aerial photographs. Prominent scarp faces west, the fault appears to displace erosion surfaces of the Central Ranges about 200 metres (660 ft). The strong geomorphologic expression suggests Quaternary activity.^[1]

References

^ ^a ^b Paris et al., 2000, p.29

Bibliography

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

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