RT Journal Article T1 The Aguacaliente Fault, source of the Cartago 1910 destructive earthquake (Costa Rica) A1 Alonso Henar, Jorge A1 Montero, Walter A1 Martínez Díaz, José J. A1 Álvarez Gómez, José Antonio A1 Insúa Arévalo, Juan Miguel A1 Rojas, Wilfredo AB On 4 May 1910, the most destructive earthquake in the history of Costa Rica (Ms 6.4) destroyed the city of Cartago, a major city located in the Valle Central of Costa Rica. Using both palaeo-seismological and morphotectonic analyses, we have found evidence that points to the Aguacaliente Fault (AF) as the source of this earthquake. This structure is a N100° E trending, strike-slip fault situated to the south of Cartago and within a wide band of deformation. We excavated two trenches near Bermejo, south of Cartago. We found evidence of three surface ruptures within the last 1000 years on this fault. The age of the most recent rupture is consistent with the Cartago 1910 earthquake. The AF is a seismogenic source capable of producing large earthquakes (Mw 6.5–6.9) with an estimated recurrence interval of about 500 years. PB Blackwell Publishing Ltd SN 0954-4879 YR 2013 FD 2013 LK https://hdl.handle.net/20.500.14352/34328 UL https://hdl.handle.net/20.500.14352/34328 LA eng NO Ministerio de Ciencia e Innovación (MICINN) NO Universidad de Costa Rica NO Universidad Complutense de Madrid NO Universidad Politécnica de Madrid DS Docta Complutense RD 3 may 2024