• Slow, shallow, sediments
• crust is 42-43 km thick
• crustal velocity increases from 6.1-.2 km/s to 6.7-.8 km/s
• Mid Crustal Bounary at 30 km
• Upper mantle velocity 7.6-7.8 km/s (relatively slow)

Prodehl's data is on large plates, not suitiable for muti-media!!!
 

Cartoon depicting Prodehl's interpretation