 Okutuwa kwetimba yovinyama kayiwa-ko ndeci olomunda palo posi okuti oloneke vimwe tusanga ekolo limwe ilitepa calwa, pole tusima okuti citava okusanga ovituno vyalonga posi, wavangula ulongisi Glen Cushing otanga astologeologia kosikola yamako United States Geological Survey USGS kwenda losikola yamako yo Arizona, isangiwa ko Flagstaff. 