: Associ ation ▁football ▁goal keep ers <0x0A> </s> ▁A ▁mid - o cean ▁r idge ▁( M OR ) ▁is ▁a ▁se af loor ▁mountain ▁system ▁formed ▁by ▁plate ▁t ect on ics . ▁It ▁typically ▁has ▁a ▁depth ▁of ▁~ ▁ ▁and ▁r ises ▁about ▁two ▁kilom eters ▁above ▁the ▁deep est ▁portion ▁of ▁an ▁ocean ▁bas in . ▁This ▁feature ▁is ▁where ▁se af loor ▁spread ing ▁takes ▁place ▁along ▁a ▁diver gent ▁plate ▁boundary . ▁The ▁rate ▁of ▁se af loor ▁spread ing ▁determ ines ▁the ▁morph ology ▁of ▁the ▁cr est ▁of ▁the ▁mid - o cean ▁r idge ▁and ▁its ▁width ▁in ▁an ▁ocean ▁bas in . ▁The ▁production ▁of ▁new ▁se af loor ▁and ▁ocean ic ▁l ith os phere ▁results ▁from ▁mant le ▁up well ing ▁in ▁response ▁to ▁plate ▁separation . ▁The ▁m elt ▁r ises ▁as ▁mag ma ▁at ▁the ▁linear ▁weak ness ▁between ▁the ▁separ ating ▁pl ates , ▁and ▁emer ges ▁as ▁la va , ▁creating ▁new ▁ocean ic ▁cr ust ▁and ▁l ith os phere ▁upon ▁cool ing . ▁The ▁first ▁discovered ▁mid - o cean ▁r idge ▁was ▁the ▁ ▁Mid - At l antic ▁R idge , ▁which ▁is ▁a ▁spread ing ▁center ▁that ▁bis ect s ▁the ▁North ▁and ▁South ▁Atlantic ▁bas ins ; ▁hence ▁the ▁origin ▁of ▁the ▁name ▁' mid - o cean ▁r idge '. ▁Most ▁ocean ic ▁spread ing ▁cent ers ▁are ▁not ▁in ▁the ▁middle ▁of ▁their ▁hosting ▁ocean ▁basis ▁but ▁regardless