Is the Mariana Trench a convergent boundary?

Yes, the Mariana Trench is a convergent boundary. It is the deepest part of the Earth's oceans, located in the western Pacific Ocean, not far from Guam. The trench is a result of the collision of the Pacific Plate with the Mariana Plate, which is subducting beneath the Pacific Plate. This collision has created a deep, narrow trench along the boundary between the two plates.