Mulato-Getudo Fault
| Mulato-Getudo Fault | |
|---|---|
| Mulato-Jetudo Fault, Falla de Mulato-Jetudo | |
  | |
| Etymology | Mulatos & Jetudo Rivers |
| Country |
 |
| Region | Andean |
| State | Antioquia, Caldas, Tolima |
| Cities | Mariquita |
| Characteristics | |
| Range | Central Ranges, Andes |
| Part of | Andean oblique faults |
| Length | 187.3 km (116.4 mi) |
| Strike | 016.7 ± 9 |
| Dip | West |
| Dip angle | High to medium |
| Displacement | <0.2 mm (0.0079 in)/yr |
| Tectonics | |
| Plate | North Andean |
| Status | Inactive |
| Type | Oblique thrust fault |
| Movement | Reverse sinistral |
| Age | Quaternary |
| Orogeny | Andean |
The Mulato-Getudo or Mulato-Jetudo Fault (Spanish: Falla de Mulato-Jetudo) is a sinistral oblique thrust fault in the departments of Tolima, Caldas and Antioquia in central Colombia. The fault has a total length of 187.3 kilometres (116.4 mi) and runs along an average north-northeast to south-southwest strike of 016.7 ± 9 in the Middle Magdalena Valley and along the western foothills of the Central Ranges of the Colombian Andes.
Etymology
The fault is named after the Mulatos and Jetudo Rivers, left tributaries of the Magdalena River.[1]
Description
The Mulato-Getudo Fault, in some parts called Jetudo Fault,[2] extends along the eastern foothills of the Central Ranges of the Colombian Andes, where it marks the abrupt break in slope of the east-tilted Tertiary erosion surface of the Cordillera and the flat alluvial plains of the Magdalena River in the Middle Magdalena Valley. The fault forms a regional-scale degraded fault escarpment with an outstanding break in slope. It offsets Pliocene to Quaternary deposits and an extensive tilted erosional surface of probable Miocene to Pliocene age (pre-Mesa Formation, older than 1.5 Ma). The northern half of the fault is characterised by aligned drainages and broad valleys.[1] The fault possibly underlies the Honda Group south of the La Miel River.[3]
See also
References
Bibliography
- Paris, Gabriel; Michael N. Machette; Richard L. Dart, and Kathleen M. Haller. 2000a. Map and Database of Quaternary Faults and Folds in Colombia and its Offshore Regions, 1–66. USGS. Accessed 2017-09-18.
Maps
- Barrero L., Darío, and Carlos J. Vesga O. 2009. Plancha 188 - La Dorada - 1:100,000, 1. INGEOMINAS. Accessed 2017-06-06.
- Gómez, J.; N.E. Montes; Á. Nivia, and H. Diederix. 2015. Plancha 5-09 del Atlas Geológico de Colombia 2015 – 1:500,000, 1. Servicio Geológico Colombiano. Accessed 2017-06-06.
- Paris, Gabriel; Michael N. Machette; Richard L. Dart, and Kathleen M. Haller. 2000b. Map of Quaternary Faults and Folds of Colombia and Its Offshore Regions, 1. USGS. Accessed 2017-09-18.
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.
