Kammala jumla mai zuwa: Girgizar ƙasa mai girma tana faruwa tare da yankin da ke kusa da yankin Nazca Ridge, wanda aka sani a cikin Peru megathrust. Waɗannan sun haɗa da, amma ba'a iyakance su ba, girgizar ƙasa mai girman 8.1 a 1942, girgizar ƙasa mai girman 8.0 a 1970, girgizar ƙasa mai girman 7.7 a 1996, girgizar ƙasa mai girman 8.4 a 2001, da kuma girgizar ƙasa mai girman 8.4 a shekara ta 2001.
Girgizar kasa mai girman 8.0 a shekara ta 2007. Bayanan girgizar kasa na wannan yanki na subduction ya koma zuwa 1586. Duk waɗannan fashewar sun kasance ko dai a gabar tekun Peru ko a cikin Peru-Chile Trench tsakanin 9 ° S da 18 ° S, daidai da ƙaddamar da Nazca Ridge, kuma sun haɗa da fashewar intraplate da interplate. Babu manyan girgizar ƙasa da aka gano tsakanin 14 ° S da 15.5 ° S, inda bathymetric high na ridge yana subducting. Girgizar ƙasa ta Interplate ba ta faruwa kai tsaye tare da Nazca Ridge.