Biology 210 with Walsh at Trident Technical College *. * The material on this site is created by StudyBlue users. StudyBlue is not affiliated with, sponsored by or endorsed by the academic institution or instructor.
Mid-ocean ridges (eg. Mid Atlantic Ridge) are formed at constructive plate boundaries, where magma is welling up between two diverging plates and forming new plate materiel. Trenches (eg. Marianas Trench) are formed at destructive plate boundaries where an ocean plate is being subducted below a continental plate.Chariotmender Â· 8 years ago.id Atlantic Ridge) are formed at constructive plate boundaries, where magma is welling up between two diverging plates and forming new plate materiel. Trenches (eg. Marianas Trench) are formed at destructive plate boundaries where an ocean plate is being subducted below a continental plate. Chariotmender Â· 8 years ago.
Physical Characteristics The Mid-Atlantic Ridge is a submarine mountain range that extends north from Iceland to near the Antarctic Circle through the middle of the Atlantic. It separates the Atlantic Ocean into two large troughs each of which with a depth ranging from 12,100-18,000 ft (3,700-5,500 metres). The ocean floor is thought to be mostly flat, but there are also a number of trenches, basins and canyons throughout, which cause the measured depth of the Atlantic Ocean to vary.