Furthermore, how in the heck does ”thin’ ocean crust subduct below a ”thick’ continental crust? Huh???
Why don’t the continents subduct? Too thick? Not worth as much ransom perhaps? The only ”subducting’ going on in the world is by the Mafia
Well, let's see. Dense material sinks. Less dense material floats. Basalt is more dense than granite. Oceanic crust is mostly basaltic. Continental crust is mostly granitic. When they meet, basalt ends up subducting underneath granitic. Mind you, this is a very simplistic explanation, but since you seem to not understand the concept of density . . .
Instead of just spouting things out, you could look up whether your questions have already been answered. Your question is answered in intro to geology courses in universities across the states.
The rest of your post? Wow, just, wow. A complete and total lack of understanding of the basic processes behind plate tectonics. Seriously. Sign up for a comm. college course on geology. Do yourself some good.