If two oceanic plates collide at a relatively fast speed, and one is much older and cooler (therefore denser) than the other, what will probably happen?
â—¯ continental mountains will form.
â—¯ a trench will form.
â—¯ island arcs will form.
â—¯ continental islands and a trench will form.
â—¯ island arcs and a trench will form.

Q&A Education