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Suárez Fault

Suárez Fault
Falla del Suárez
Map showing the location of Suárez Fault
Map showing the location of Suárez Fault
EtymologySuárez River
Coordinates 06°35′48′′N 73°18′16′′W / 6.59667°N 73.30444°W / 6.59667; -73.30444
Country Colombia
RegionAndean
StateSantander
CitiesBucaramanga
Characteristics
RangeEastern Ranges, Andes
Part ofAndean oblique faults
Length98.3 km (61.1 mi)
Strike 021.1 ± 8
Dip West
Dip angle 60-90
Displacement 0.1 mm (0.0039 in)/yr
Tectonics
Plate North Andean
StatusInactive
Type Oblique thrust fault
Movement Sinistral reverse
Rock units Girón Fm., Paja Fm., Rosablanca Fm., Simití Fm.
Age Quaternary
Orogeny Andean

The Suárez Fault (Spanish: Falla del Suárez) is a sinistral oblique thrust fault in the department of Santander in northeastern Colombia. The fault has a total length of 98.3 kilometres (61.1 mi) and runs along an average north-northeast to south-southwest strike of 021.1 ± 8 in the Eastern Ranges of the Colombian Andes from Barbosa in the south to Bucaramanga in the north, where it connects with the regional Bucaramanga-Santa Marta Fault.

Etymology

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

Description

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The Suárez Fault runs from Barbosa in the south,[2] where it displaces the Simití Formation,[3] and joins the Bucaramanga Fault a few kilometers to the north of the city of Bucaramanga. The Suárez Fault cuts Jurassic (Girón Formation),[4] and Cretaceous sedimentary rocks (Simití, Rosablanca and Paja Formations),[5] and Quaternary alluvial deposits and mud flows that form the "Bucaramanga Terrace".[6] The trace of the fault is well defined, controls linear drainages such as the Suárez River for several kilometers, has sag ponds, and locally dams alluvium. The fault vertically offsets debris flows in the area of Girón and La Fuente and displaces a Tertiary erosion surface. The slip rate is estimated at 0.1 millimetres (0.0039 in) per year on the basis of displaced Quaternary deposits.[1]

See also

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References

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  1. ^ a b Paris et al., 2000, p.34
  2. ^ Mapa Geológico Santander, 1999
  3. ^ Plancha 170, 2009
  4. ^ Plancha 135, 2009
  5. ^ Plancha 151, 2009
  6. ^ Plancha 120, 2010

Bibliography

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Maps

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Further reading

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  • 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
Tectonic plates
Terranes
Terrane-bounding
fault systems
Intraterrane
faults
Chibcha
Tahamí
Caribe
La Guajira
Other terranes
Major
earthquakes
Orogenies
Other topics
Sources
     Paris, Gabriel; Machette, Michael N.; Dart, Richard L.; Haller, Kathleen M. (2000). Map and Database of Quaternary Faults and Folds in Colombia and its Offshore Regions (PDF). USGS. pp. 1–66. Retrieved 2017年06月20日.

      Gómez Tapias, Jorge; Montes Ramírez, Nohora E.; Almanza Meléndez, María F.; Alcárcel Gutiérrez, Fernando A.; Madrid Montoya, César A.; Diederix, Hans (2015). Geological Map of Colombia. Servicio Geológico Colombiano. pp. 1–212. Retrieved 2019年10月29日.

      Various authors (2014). Enciclopedia de desastres naturales históricos de Colombia (PDF). Universidad del Quindío. pp. 1–21. Retrieved 2017年06月20日.

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