▁ ▁Description ▁ ▁The ▁C uc u ana ▁F ault ▁is ▁parallel ▁to ▁and ▁south ▁of ▁the ▁Ib agu é ▁F ault ▁in ▁the ▁Central ▁R anges ▁of ▁the ▁Colomb ian ▁And es , ▁crossing ▁Pale oz o ic ▁met am orph ic ▁rocks , ▁Mes oz o ic ▁ igne ous ▁rocks ▁( I b agu é ▁B athol ith ), ▁and ▁T ert i ary ▁b eds . ▁The ▁fault ▁extends ▁into ▁the ▁Eastern ▁R anges ▁across ▁the ▁Middle ▁Mag dal ena ▁Valley , ▁cutting ▁C ret ace ous ▁b eds . ▁The ▁Qu atern ary ▁sed iment ary ▁and ▁vol can ic ▁fill ▁of ▁the ▁Mag dal ena ▁River ▁valley ▁is ▁not ▁reported ▁as ▁having ▁been ▁de formed ▁by ▁the ▁fault . ▁This ▁fault ▁has ▁a ▁prominent ▁trace ▁on ▁satellite ▁images . ▁It ▁has ▁disp la ced ▁d rain ages , ▁sp urs , ▁fault ▁s add les , ▁and ▁formed ▁tri angular ▁fac ets , ▁and ▁appears ▁to ▁struct ur ally ▁control ▁the ▁course ▁of ▁the ▁C uc u ana ▁River . ▁ ▁See ▁also ▁▁▁ ▁List ▁of ▁earth qu akes ▁in ▁Colombia ▁ ▁Buc aram anga - S anta ▁Mart a ▁F ault ▁ ▁Rom eral ▁F ault ▁System ▁ ▁References ▁ ▁Bibli ography ▁ ▁Maps ▁▁▁▁ ▁Category : Se ism ic ▁fault s ▁of ▁Colombia ▁Category : St rike - s lip ▁fault s ▁Category : In active ▁fault s ▁F ault s ▁F ault s <0x0A> </s> ▁The ▁Top na ar ▁people ▁( <0xC7> <0x82> A