What type of rock makes up the ocean floor?
Basalt is the type of igneous rock that makes up the ocean floor. In the middle of the Atlantic Ocean is a divergent plate boundary.
What type of igneous rock make up most of the ocean floor?
The most common extrusive igneous rock is basalt. It is the rock that makes up the ocean floor.
What are ocean rocks called?
Chemical sedimentary rocks can be found in many places, from the ocean to deserts to caves. For instance, most limestone forms at the bottom of the ocean from the precipitation of calcium carbonate and the remains of marine animals with shells.