Gastre Fault

The Gastre Fault Zone (GFZ) is a NW-SE striking dextral Jurassic Gastre Fault System (cf. Rapela & Pankhurst, 1992) in Central Patagonia, Argentina.[1]

From a tentative correlation of the fault zone with the similarly NW-SE trend, it was termed ‘Gastre Fault Zone’ or ‘Gastre-Purén Fault Zone’ to the Lanalhue Fault Zone in Chile by early works. However, in later works [2] it is shown that this correlation is incorrect. Since the lake ‘Lago Lanalhue’, is located on the fault trace and shows a NW-SE-elongated shape, ‘Lanalhue Fault Zone (LFZ)’ stands as appropriate name for the here discussed fault zone. The Mocha-Villarrica Fault Zone is the NW-SE trending fault responsible for the alignment of Villarrica, Quetrupillán and Lanín volcanoes.[3]

References

  1. ^ W. von Gosena and W. Loskeb, 2004. Tectonic history of the Calcatapul Formation, Chubut province, Argentina, and the “Gastre fault system”
  2. ^ "Glodny, J., Echtler, H., Collao, S., Ardiles, M., Burón, P., Figueroa, O. (2008): Differential Late Paleozoic active margin evolution in South-Central Chile (37°S-40°S) -The Lanalhue Fault Zone. - Journal of South American Earth Sciences, 26, 4, 397-411"
  3. ^ Moreno et al. MODELAMIENTO DE DISLOCACIÓN ELÁSTICA EN EL BLOQUE DE ARAUCO (36-38°S), BASADO EN DATOS DE GPS Y EN LA GEOMETRIA DE LAS TERRAZAS MARINAS ALZADAS


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