How they fit into Plate Tectonics
They don't, really. They are old, older than most continents. What role did they play in continental crust formation as opposed to subduction? Why are they so very deformed with out much thermal metamorphism?
When I did a lot of work in them, there were two basic models, one conventional, one quite radical, that were fought over in publications, at meetings, and in the field. I had the privilege of spending time with adherents of both schools.
More to follow...