Complex sentence: Convergence of relatively old oceanic crust is occurring at a rate of per year in the west portion and per year in the east, and the dip of the Benioff Zone is around 50 ° and extends to a depth of approximately.
Split into simpler sentences: Convergence of relatively old oceanic crust is occurring at a rate of per year in the west portion and per year in the east. The dip of the Benioff Zone is around 50 ° and extends to a depth of approximately.