Usually, the denser oceanic plate sinks beneath its lighter continental neighbor, at the same time carrying its cargo of salty sediments with it like a great conveyor belt.
Tavaliselt sukeldub tihkem ookeaniline laam kergema mandrilise laama alla, ning laam, mis liigub kui hiigelsuur konveierilint, viib endaga soolade setted maa sisemusse.