I'm working through Artifaxian's (https://www.youtube.com/watch?v=AzD_WVsEIRM) series on using gPlates to make tectonic history. I've run into the place where I have two subduction ridges about to meet. The bottom continent is moving up, the one at the top is moving down. Which one is likey to subduct?
I can imagine that the unified front of the bottom subduction could make it easier for it to take under the top subduction zone. Likewise I could imagine that the sharp point could pierce the bottom one.
The ocean crust segments are the same age.
Thanks for any thoughts and ideas you share!