The blocks on either side of the fault moved, with the west block swinging skyward to form the Teton Range, the youngest and most dramatic range in the Rocky Mountain chain.
(The blocks on either side of the fault; moved; ) (the west block; swinging skyward; ) (the west block; to form; the Teton Range)
The blocks on either side of the fault the west block the west block
moved swinging skyward to form
the Teton Range