N'ime nkume atọ ahụ, olee nke e ji okpomọkụ kpụọ? N'iburu ajụjụ nke mbụ n'uche, dee ihe gbara ya gburugburu bụ́ nke ga-enye azịza ya. Ọ nwere ike ịbụ 1 - 20 ahịrịokwu. Ihe ndị gbara ya gburugburu:
E nwere ụdị nkume atọ: igneous, sedimentary, na metamorphic. Okirikiri okwute bụ echiche dị mkpa na geology nke na-egosi mmekọrịta dị n'etiti ụdị okwute atọ a, na magma. Mgbe nkume na-agbaze site na agbaze (magma na / ma ọ bụ lava), ọ bụ nkume igneous. Nkume a nwere ike imebi ma mebie ya, ma mezie ya ma mezie ya ka ọ bụrụ nkume sedimentary, ma ọ bụ gbanwee ya ka ọ bụrụ nkume metamorphic n'ihi okpomọkụ na nrụgide nke na-agbanwe ọdịnaya ịnweta nke nkume nke na-enye ya ụdị ọdịdị. Nkume sedimentary ahụ nwere ike gbanwee n'ime nkume metamorphic n'ihi okpomọkụ na nrụgide ma emesịa kpochapụ, kpochapụ, tinye, na lithified, n'ikpeazụ ghọọ nkume sedimentary. Nkume sedimentary nwekwara ike ịbụ nke a na-agbagha na nke a na-etinyeghachi, na nkume metamorphic nwekwara ike ịgafe metamorphism ọzọ. Ụdị nkume atọ ahụ nwere ike ịgwakọta ọzọ; mgbe nke a mere, a na-emepụta magma ọhụrụ, nke nkume igneous nwere ike isi na ya pụta ọzọ.