Final answer:
The oldest oceanic crust in the Pacific is located near the coast of Asia. It can be found at subduction zones where one plate is forced beneath another plate.
Step-by-step explanation:
The oldest oceanic crust in the Pacific is located in the northwest Pacific region, near the coast of Asia. This area is known as the West Pacific or the Philippine Sea Plate. The oldest type of sea floor material is found at convergent plate boundaries, specifically at subduction zones where one tectonic plate is forced beneath another. These subduction zones can be identified by the presence of oceanic trenches, such as the Japan Trench along the coast of Asia.