The Murindó Fault () is a

strike-slip fault In geology, a fault is a planar fracture or discontinuity in a volume of rock across which there has been significant displacement as a result of rock-mass movements. Large faults within Earth's crust result from the action of plate tectonic ...

in the department of Antioquia and Chocó in northwestern

Colombia Colombia, officially the Republic of Colombia, is a country primarily located in South America with Insular region of Colombia, insular regions in North America. The Colombian mainland is bordered by the Caribbean Sea to the north, Venezuel ...

. The fault has a total length of and runs along an average north-northwest to south-southeast

strike Strike may refer to: People *Strike (surname) * Hobart Huson, author of several drug related books Physical confrontation or removal *Strike (attack), attack with an inanimate object or a part of the human body intended to cause harm * Airstrike, ...

of 347.4 ± 6 in the Chocó Basin along the western edge of the Western Ranges of the Colombian

Andes The Andes ( ), Andes Mountains or Andean Mountain Range (; ) are the List of longest mountain chains on Earth, longest continental mountain range in the world, forming a continuous highland along the western edge of South America. The range ...

Etymology

The fault is named after Murindó.Paris et al., 2000, p.14

Description

The fault in the Chocó Basin extends along the western slope of the Western Ranges of the

, from the Arquia River in the south to the Río Sucio and the basin of the

Atrato River The Atrato River () is a river of northwestern Colombia. It rises in the slopes of the Western Cordillera and flows almost due north to the Gulf of Urabá (or Gulf of Darién), where it forms a large, swampy delta. Its course crosses the Ch ...

in the north. The Murindó Fault places

Cretaceous The Cretaceous ( ) is a geological period that lasted from about 143.1 to 66 mya (unit), million years ago (Mya). It is the third and final period of the Mesozoic Era (geology), Era, as well as the longest. At around 77.1 million years, it is the ...

volcanic (basic) rocks against Tertiary

turbidite A turbidite is the geologic Deposition (geology), deposit of a turbidity current, which is a type of amalgamation of fluidal and sediment gravity flow responsible for distributing vast amounts of clastic sediment into the deep ocean. Sequencing ...

s, and crosscuts Tertiary

quartz Quartz is a hard, crystalline mineral composed of silica (silicon dioxide). The Atom, atoms are linked in a continuous framework of SiO4 silicon–oxygen Tetrahedral molecular geometry, tetrahedra, with each oxygen being shared between two tet ...

diorite Diorite ( ) is an intrusive rock, intrusive igneous rock formed by the slow cooling underground of magma (molten rock) that has a moderate content of silica and a relatively low content of alkali metals. It is Intermediate composition, inter ...

and

granodiorite Granodiorite ( ) is a coarse-grained (phaneritic) intrusive igneous rock similar to granite, but containing more plagioclase feldspar than orthoclase feldspar. The term banatite is sometimes used informally for various rocks ranging from gra ...

. The Murindó River flows along the Murindó Fault near Murindó.Plancha 113, 2007 The fault underlies the

municipalities A municipality is usually a single administrative division having municipal corporation, corporate status and powers of self-government or jurisdiction as granted by national and regional laws to which it is subordinate. The term ''municipality' ...

of Dabeiba and Frontino.Plancha 128, 2002 To the south, the fault runs parallel to the Mutatá and Encarnación Faults.Plancha 129, 2002Plancha 145, 2002 In the southernmost part, the fault shows evidence of tectonic control of streams. It also forms aligned saddles that face toward the mountain front. The fault is active with an approximate slip rate of per year, and caused the 1992 Murindó earthquake ( M_W 7.3) on October 18. A foreshock of 6.7 was registered the day before. Many earthquakes that occurred since 1883 in the region are associated with the Murindó Fault.Paris et al., 2000, p.15

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Etymology

Description

See also

References

Bibliography

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Further reading