El Arrayán Fault
El Arrayán Fault (Spanish: Falla El Arrayán) is a geological fault, located inmediataly north of the city of Santiago in Chile. The fault runs in northwest-southeast direction. Likely, the fault was last active sometime in the Quaternary period (last 2.5 million years).[1] It is chiefly a strike-slip fault. Fault scarps, sag ponds, mountain saddles and stream deflection are some of the surface features of El Arrayán Fault.[1] The fault is estimated to be able to produce 6.4 Mw-strong earthquakes which make it a significant risk factor for the northernmost neighbourhoods of Santiago.[1]
References
- ^ a b c Araya, José; De Pascale, Gregory P.; Mardel, Rodrigo; Sepúlveda, Sergio A. (2021). "The likely Quaternary active El Arrayán fault, Santiago, Chile". Andean Geology. 48 (3): 529–545. doi:10.5027/andgeoV48n3-3256. Retrieved November 2, 2021.
