What does the presence of new rock near an oceanic ridge indicate?
A: There is always a deep-sea trench underneath
B: There is evidence of seafloor spreading
C: They are made from oceanic crust
D: They have iron oriented in different directions
This uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.
