El Arrayán Fault: Difference between revisions
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←Created page with ''''El Arrayán Fault''' ({{lang-es|Falla El Arrayán}}) is 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).<ref name=Arayaetal21>{{cite journal |last1=Araya |first1=José |last2=De Pascale |first2=Gregory P. |last3=Mardel |first3=Rodrigo |l...' |
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Revision as of 13:18, 21 November 2021
El Arrayán Fault (Spanish: Falla El Arrayán) is 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 pond and stream deflection are some of the surface features of El Arrayán Fault.<ref name=Arayaetal21> The fault is estimated to be able to produce 6.4 Mw-strong earthquakes which make it a significant risk factor for the northernmost neigbourhoods of Santiago.[1]
References
- ^ a b 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.
Major South American geological features | |||||
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| Tectonic plates |  | ||||
| Cratons and shields | |||||
| Structures undergoing subduction | |||||
| Faults and shear zones | |||||
| Rifts and grabens | |||||
| Sedimentary basins | |||||
| Orogenies | |||||
| Metallogenetic provinces | |||||
| Volcanism |
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