Pre-collisional setting
{"Image DocumentName": "Pre-collisional setting", "Image ImageDescription": "Lower. plate. Upper plate. Prior to a continental collision, the landmasses are separated by oceanic crust, formed during an earlier episode of sea-floor spreading. As the continental blocks converge, the intervening sea floor (lower plate) is subducted beneath the upper plate. The descending oceanic slab generates a volcanic arc. Upper plate deformation is limited (tectonics stress is not transferred far away from trench) and shortening is mainly accommodated along plates interface (accretionary wedge) India-Asia convergence rate decreased from 160 to 50 mm/yr in the last 70Ma. www2.bc.edu/~kafka/ge180.f03/PT_4.ppt.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}