▁ ▁Et ym ology ▁ ▁The ▁fault ▁is ▁named ▁after ▁the ▁N aya ▁and ▁Mic ay ▁R ivers . ▁ ▁Description ▁ ▁The ▁N aya - M ic ay ▁F ault ▁runs ▁parallel ▁to ▁and ▁in land ▁of ▁the ▁south western ▁Pacific ▁Coast ▁of ▁Colombia ▁in ▁the ▁C au ca ▁and ▁Valle ▁del ▁C au ca ▁depart ments ▁from ▁Gu api ▁in ▁the ▁south ▁to ▁Buen av ent ura ▁in ▁the ▁north . ▁The ▁fault ▁disp laces ▁marine ▁and ▁non - marine ▁P li oc ene ▁sed iment ary ▁rocks . ▁It ▁locally ▁off sets ▁und iffer enti ated ▁Qu atern ary ▁all uv ial ▁depos its . ▁In ▁general , ▁there ▁are ▁u pl ift ed ▁T ert i ary ▁sed iments ▁on ▁the ▁east ▁and ▁Qu atern ary ▁sed iments ▁on ▁the ▁western ▁side ▁of ▁the ▁fault . ▁The ▁fault ▁appears ▁to ▁be ▁a ▁northern ▁continu ation ▁of ▁the ▁Rem ol ino - El ▁Char co ▁F ault . ▁The ▁fault ▁controls ▁d rain age ▁of ▁the ▁Gu api ▁River , ▁locally ▁off sets ▁Qu atern ary ▁depos its , ▁and ▁forms ▁fol ded ▁pale oso ils , ▁el ong ated ▁bas ins ▁and ▁rid ges ▁and ▁has ▁strong ▁general ▁linear ▁features . ▁Al ong ▁the ▁coast , ▁it ▁forms ▁typical ▁fault - control led ▁linear ▁land forms . ▁ ▁See ▁also ▁▁▁ ▁List ▁of ▁earth qu akes ▁in ▁Colombia ▁ ▁Rom eral ▁F ault ▁System ▁ ▁Mal p elo ▁Pl ate ▁ ▁References ▁ ▁Bibli ography ▁ ▁Maps ▁▁▁▁ ▁Category