Ruwan dusar ƙanƙara na Kibo ya kasance ne saboda Kilimanjaro ya kasance mai zurfi, babban dutse wanda ya tashi sama da layin dusar ƙanƙara. Ruwan dusar ƙanƙara ya bambanta kuma a gefuna ya rabu zuwa glaciers. Kashi na tsakiya na kankara ya katse ta wurin kasancewar ramin Kibo. Ruwan dusar ƙanƙara da filayen kankara ba su nuna mahimman motsi na kwance ba saboda ƙarancin kaurin su yana hana babban nakasawa. Shaidar ilimin ƙasa ta nuna aukuwa biyar na kankara a jere a lokacin Quaternary, wato na farko (500,000 BP), na biyu (mafi girma fiye da shekaru 360,000 da suka gabata zuwa 240,000 BP), na uku (150,000 zuwa 120,000 BP), na huɗu (wanda kuma aka sani da "Babban") (20,000 zuwa 17,000 BP), da kuma na gaba (16,000 zuwa 14,000 BP). Babban na uku na iya zama mafi girma a cikin mita, kuma a gefuna ya rabu zuwa ƙananan glaciers.
Shekaru 11,700