The Liquiñe-Ofqui Fault is major geological fault that runs a length of roughly 1,200 kilometres (750 mi) 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 . Most large stratovolcanoes of the Southern Volcanic Zone of the Andes are aligned by the fault which allows for the movement of magma and hydrothermal fluids.
4-578: The fault crosses several transverse faults including the Mocha-Villarrica Fault Zone (MVFZ) and the Biobío-Aluminé Fault Zone . The fault has had periods of ductile deformation associated to pluton emplacement , be it either at great depths or by shallow intrusions . The forces that move the fault are derivative of the oblique subduction offshore Chile's coast. This leads to partition of deformation between
8-414: A local tsunami . The fault name was coined by Francisco Hervé , I. Fuenzalida, E. Araya and A. Solano in 1979. The existence of the fault was first inferred by Chilean government agent Hans Steffen around 1900, who referred to it as a "tectonic furrow" (Spanish: surco tectónico ). This tectonics article is a stub . You can help Misplaced Pages by expanding it . This Chile location article
12-594: Is a stub . You can help Misplaced Pages by expanding it . Mocha-Villarrica Fault Zone The Mocha-Villarrica Fault Zone is a northwest-trending geological fault zone in southern Chile and Argentina . The fault zone runs from Mocha Island in the Pacific to the Andes where it aligns Villarrica , Quetrupillán and Lanín volcanoes. It is one of several fault zones that traverses the north-south Liquiñe-Ofqui Fault . This article about structural geology
16-602: The subduction zone, the fore-arc and the intra-arc region where the fault lies. There is evidence that the fault broke as a M w 9.07 subevent in the 1960 Valdivia earthquake. A portion of the fault in Aysén Region likely slipped (moved) in an aftershock a few weeks after the 1960 Valdivia earthquake . This same portion slipped again in April 2007, causing earthquakes in Aysén Fjord , triggering landslides and
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