Buuxi weedha soo socota:
1906) barta udub dhexaadka ah ee qiimeynta khatarta dhulgariirka ee California waxay ahayd nidaamka San Andreas ee khalkhal galka khalkhal galka. Si kastaba ha noqotee, nidaamka khaladaadka, oo ay ku jiraan Sierra Madre <unk> Cucamonga Fault System oo ku teedsan xadka San Gabriel iyo San Fernando Valleys, ayaa sidoo kale sababay taxane dhacdooyin dhexdhexaad ah ilaa waaweyn oo ka dhacay Aagga Weyn ee Los Angeles. Qaybta ugu galbeed badan ee burburkan ayaa burburtay sanadkii 1971-kii waxaana loo aqoonsaday inay tahay mid ka mid ah lixda burbur ee ugu waawayn ee halis ku ah gobolkan ay dadku ku badan yihiin.