Reigolil-Pirihueico Fault

The Reigolil-Pirihueico Fault (Spanish: ''Falla Reigolil-Pirihueico'') is a second-order

geological fault Geology (). is a branch of natural science concerned with the Earth and other astronomical objects, the rocks of which they are composed, and the processes by which they change over time. Modern geology significantly overlaps all other Earth ...

located in the

Chile Chile, officially the Republic of Chile, is a country in western South America. It is the southernmost country in the world and the closest to Antarctica, stretching along a narrow strip of land between the Andes, Andes Mountains and the Paci ...

an and

Argentine Argentines, Argentinians or Argentineans are people from Argentina. This connection may be residential, legal, historical, or cultural. For most Argentines, several (or all) of these connections exist and are collectively the source of their ...

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 ...

. As the name implies, it runs from

Pirihueico Lake Pirihueico Lake (, ) is one of Seven Lakes in Panguipulli Commune, southern Chile. The lake is of glacial origin and it is enclosed mountains of the Andes. It is located in a geological fault that includes Panguipulli Lake and Lácar Lake in ...

to Reigolil Valley. Reigolil-Pirihueico Fault run in north–south direction and is roughly parallel to the larger

Liquiñe-Ofqui Fault The Liquiñe-Ofqui Fault is major geological fault that runs a length of roughly in a NNE-SSW orientation and exhibits current seismicity. It is located in the Chilean Northern Patagonian Andes. It is a dextral intra-arc strike-slip fault. Mos ...

, which is located 15 to 20 km west of it to which it is considered a branch of. East of Reigolil-Pirihueico Fault, close or along the Argentina-Chile boundary, are a string of volcanoes pliocene to quaternary volcanoes:

Lanín Lanín is an ice-clad, cone-shaped stratovolcano on the border of Argentina and Chile. It forms part of two national parks: Lanín in Argentina and Villarrica in Chile. As a part of the flag and anthem of the Argentine province of Neuquén, it ...

, Pirihueico, Huanquihué, Quelguenco and

Chihuío Chihuío is a hot spring and hamlet along Curringue River in the Andes of Futrono commune, southern Chile. Massacre of prisoners In October 1973, about one month after the 1973 Chilean coup d'etat, the Chilean Army gathered the prisoners of the po ...

. Geographically the fault is mostly inside two Chilean communes,

Panguipulli Panguipulli ( ; Mapudungun for "hill of the puma") is a city and commune in Valdivia Province, southern Chile, administered by the Municipality of Panguipulli. It is located on the western edge of Panguipulli Lake, and is on a moraine in the ...

and

Curarrehue Curarrehue () is a town and commune in Cautín Province of Araucanía Region, Chile. The origin of Curarrehue dates back to the occupation of Araucanía and the Conquest of the Desert by the Chilean and Argentine army respectively in the 1870s ...

. Settlements above the fault include the hamlet of Puerto Pirihueico and the town of

. Seismic faults of Argentina Seismic faults of Chile Geology of Araucanía Region Geology of Los Ríos Region Strike-slip faults Mapuche language {{Chile-geo-stub