<Ul> <Li> Kolbeinsey Ridge (North of Iceland) </Li> <Li> Mohns Ridge </Li> <Li> Knipovich Ridge (between Greenland and Spitsbergen) </Li> <Li> Reykjanes Ridge (South of Iceland) </Li> </Ul> <Li> Kolbeinsey Ridge (North of Iceland) </Li> <Li> Knipovich Ridge (between Greenland and Spitsbergen) </Li> <Li> Reykjanes Ridge (South of Iceland) </Li>

What is at the center of a mid ocean ridge