La Dina Fault

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La Dina Fault
Falla La Dina, El Agrado-Betania Fault
Map showing the location of La Dina Fault
Map showing the location of La Dina Fault
Coordinates02°55′52″N 75°25′36″W / 2.93111°N 75.42667°W / 2.93111; -75.42667Coordinates: 02°55′52″N 75°25′36″W / 2.93111°N 75.42667°W / 2.93111; -75.42667
Country Colombia
RegionAndean
StateHuila, Tolima
Characteristics
RangeCentral Ranges, Andes
Part ofAndean oblique faults
Length206.9 km (128.6 mi)
Strike032.9 ± 13
DipWest
Dip angle40-60
Displacement0.2–1 mm (0.0079–0.0394 in)/yr
Tectonics
PlateNorth Andean
StatusInactive
TypeOblique thrust fault
MovementDextral reverse
Rock unitsHonda Gp., , Olini Gp.,
AgeQuaternary
OrogenyAndean

La Dina Fault (Spanish: Falla La Dina) is a regional dextral oblique thrust fault in the departments of Huila and Tolima in southwestern Colombia. The fault has a total length of 206.9 kilometres (128.6 mi) and runs along an average northeast to southwest strike of 032.9 ± 13 in the and the Central Ranges of the Colombian Andes.

Description[]

La Dina Fault lies east of La Plata Fault in southwestern Colombia. The fault displaces Jurassic (), Cretaceous ( and Olini Groups), and Tertiary (Honda Group) sedimentary rocks, which are common in the . Local names assigned to the southern extension of this fault are from north to south: Betania, Pital-Agredo and Magdalena.[1] It is also called the El Agrado-Betania Fault in Huila, where it underlies the .[2] The fault is marked by well-developed trace, abrupt slope changes, saddles, and small scarps.[1]

See also[]

References[]

  1. ^ a b Paris et al., 2000a, p.58
  2. ^ Mapa Geológico del Huila, 2001

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[]

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