Rịba ama amaokwu a dị n'okpuru ma zaa ajụjụ ahụ mgbe e mesịrị n'otu asụsụ ahụ dị ka amaokwu ahụ:  Ụzọ: Minnesota nwere ụfọdụ n'ime nkume ndị kasị ochie n'ụwa, gneisses ndị dị ihe dị ka ijeri afọ 3.6 (80% dị ka ụwa). Ihe dị ka ijeri afọ 2.7 gara aga, lava basaltic si n'olulu ndị dị n'ala oké osimiri mbụ ahụ wụpụ; ihe ndị fọdụrụ n'oké nkume a si n'ugwu mgbawa ahụ kpụrụ Ọta Canada nke dị n'ebe ugwu ọwụwa anyanwụ Minnesota. Mgbọrọgwụ nke ugwu ndị a na-agbọpụta ọkụ na ihe omume nke oké osimiri ndị dị n'oge a na-akpọ Precambrian kpụrụ Iron Range nke dị n'ebe ugwu Minnesota. Mgbe oge nke mgbawa ugwu 1.1 ijeri afọ gara aga, ọrụ ala nke Minnesota adịla ala, na-enweghị mgbawa ugwu ma ọ bụ ugwu ugwu, mana na mwakpo ugboro ugboro nke oké osimiri, nke hapụrụ ọtụtụ akwa nke nkume sedimentary. N'oge na-adịbeghị anya, nnukwu ice sheets dịkarịa ala otu kilomita ọkpụrụkpụ bibiri ala nke steeti ahụ ma kpụọ ala ya. Oge ice nke Wisconsin kwụsịrị n'afọ 12,000 gara aga. Akụkụ nile nke Minnesota jupụtara n'oké mmiri ndị a ma e wezụga ebe ndịda ọwụwa anyanwụ ya, bụ́ ebe e ji ugwu ndị dị oké elu na iyi ndị na-egwupụta n'oké nkume mara. A maara ebe a dị ka Mpaghara Na-adịghị Agbanwe Agbanwe n'ihi na a dịghị enwe oké ifufe na-efe efe. Akụkụ ka ukwuu nke steeti ahụ fọdụrụ na mpụga ebe ugwu ọwụwa anyanwụ nwere 50 ụkwụ (15 m) ma ọ bụ karịa nke glacial ruo mgbe a hapụrụ ka glaciers ikpeazụ lara azụ. Nnukwu Ọdọ Mmiri Agassiz kpụrụ n'ebe ugwu ọdịda anyanwụ afọ 13,000 gara aga. Ndagwurugwu ya mere ndagwurugwu Osimiri Uhie nke na-eme nri, na nsụda ya, Osimiri Warren glacial, kpụrụ ndagwurugwu Osimiri Minnesota na Upper Mississippi n'okpuru mmiri site na Fort Snelling. Minnesota dị jụụ taa; ala ọma jijiji na-eme ya ugboro ugboro, ihe ka ọtụtụ n'ime ha adịghịkwa ike.  Ajụjụ: Olee steeti dị jụụ taa ma nwee ike inwe obere ala ọma jijiji ugboro ugboro?
Minnesota