<classify> Kuita kwekupisa hakugari kwakafanana semapako makuru aripaNyika ayo anogara anekudziya kwakafanana, asi zvinowirirana nemaburi aripasi akadzika, akadaro Glen Cushing wechikwata cheGeological Survey Astrogeology chekuUnited States uye yunivhesiti yeNorther Arizona irimuFlagstaff, Arizona.  <topic>: geography 