Plate Movement How do we know these rates (Rate=distance/time)
{"Image DocumentName": "Plate Movement How do we know these rates? (Rate=distance/time)", "Image ImageDescription": "New crust is created at spreading centers at a rate of approximately. 1-10cm per year. Old crust is destroyed at the same rate at subduction zones. How do we know these rates? (Rate=distance/time)", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}