Read the scenario and then answer the question.

Elias is driving through the southwest part of the US on a road trip, and gets out of the car to go hiking. While hiking, he notes a very long channel running for miles in one direction. There are no distinct mountains nearby, and he is very far from the ocean. At lunch, the locals tell him there are lots of earthquakes in the area. He also thinks he sees an old road that used to cross the channel, but looks like it has been shifted apart somehow. He recalls what he learned about plate tectonics in class.

Given these clues, what type of plate boundary could Elias possibly be standing on or near?

transform
divergent
convergent
oceanic-oceanic