Extrusion tectonics: Ring of Fire - tectonic journeys in E Asia 

It's a classic!

@@robbutler2095 probably my favourite “classic” was a grade school teacher, during a lesson on plate tectonics and convection currents, he used a pot of tomato soup, that had been cooked before class and allowed to cool and form a thin skin (plate) floating on top of the liquid soup (mantle). But the exciting part was when the teacher re-heated the soup and the heat pushed the thin skin to the side of the pot, which crumpled and folded it, and even in one or two spots the heat created a couple of holes (hot spots) that allowed tomato soup to bubble through. I learned more that day as a kid about plate tectonics, convection currents, folding, and volcanoes (hot spots) from something I could recreate at home. I love when science is presented in a way that can be recreated by anyone. Even kids. I mean that’s what science really is all about, being able to replicate results from experiments. I’m excited to try this plasticine experiment with some kids to open their eyes to how science can explain naturally occurring phenomenon in the world. So glad I stumbled on this.

@@PlayNowWorkLater The soup experiment sounds great. If you try the plasticine - to get extrusion you'll need to layer it as shown (so the model splits along the layers) and have a perspex lid so the wedges can only go sideways... if you're after other experiments - try sandboxes to make folds and thrusts - Cadell's experiments are even more classic www.lyellcollection.org/doi/full/10.1144/SP490-2019-142 (it's open access...)

@@robbutler2095 Nice! Appreciate the feedback

Hopefully RU-vid is working OK for you... I uploaded the Red River one again as there seemed to. be a glitch - but seems fine now.

Depends how you define the present plate boundary... Much of the far NE is scraped off sediment once deposited on the ocean floor - (continuous with that beneath the Bay of Bengal - indeed much of Bangladesh is on oceanic crust - completely buried beneath the sediment brought down by the Ganges-Brahmaputra rivers...