The Pacific plate(s) are subducting below the encroaching continental plates.
So its destructive (Pacific plate being destroyed), typicaly has trenches (where the pacific falls away below the continental plate), and produces volcanoes on the continental plates as the light material melts and rises as magma (Andes)
The Pacific plate. Take this link and check page 5 of the reference tables. http://www.amscopub.com/images/file/File_673.pdf
The Pacific plate(s) are subducting below the encroaching continental plates.
So its destructive (Pacific plate being destroyed), typicaly has trenches (where the pacific falls away below the continental plate), and produces volcanoes on the continental plates as the light material melts and rises as magma (Andes)