How I became

You probably don't know how I was made, so I'll give you the scoop. Sumbawa Island, my home, is surrounded by oceanic crust. The continental crust went above the oceanic, which went in the the subduction zone. Suddenly, lava magma spurt out from underground when the oceanic crust touched the super hot layers beneath. I was formed when this lava went out and I became a volcano. This happened about 56,500 years ago. Yeah, I'm an oldie.



Here's an animation to demonstrate the subduction:

The oceanic crust goes beneath the continental crust and shoots up lava. The black arrow points at where I am.

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