Tarra Fault

The Tarra Fault (Spanish: Falla de Tarra) is a thrust fault in the department of Norte de Santander in Colombia. The fault has a total length of 26.8 kilometres (16.7 mi) and runs along an average north-northeast to south-southwest strike of 007.6 ± 8 in the Eastern Ranges of the Colombian Andes.

Tarra Fault
Falla de Tarra
EtymologyTarra River
Named byPage
Year defined1986
Coordinates08°34′N 73°05′W
Country Colombia
RegionAndean
StateNorte de Santander
Characteristics
RangeEastern Ranges, Andes
Part ofAndean thrust faults
Length26.8 km (16.7 mi)
Strike007.6 ± 8
DipWest
Dip angleHigh
Displacement<0.2 mm (0.0079 in)/yr
Tectonics
PlateNorth Andean
StatusActive
TypeThrust fault
MovementReverse
AgeQuaternary
OrogenyAndean

Etymology

The fault is named after the Tarra River.[1]

Description

The Tarra Fault is located northwest of the city of Cúcuta and Las Mercedes Fault. The fault thrusts Precambrian and Paleozoic rocks over Cretaceous rocks. It has a very pronounced morphologic expression along the base of the mountain front through the western side of the Tarra valley. The strong topographic signature of the scarp suggests, according to Page (1986), that the fault is as active as other known Quaternary faults in the region.[1] The fault runs from El Tarra in the north to Hacari in the south.[2][3]

See also

References
  1. Paris et al., 2000, p.12
  2. Plancha 66, 1980
  3. Plancha 76, 1980

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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