= W. J. Morgan
{c}
<W. J. Morgan> contributed to the kinematics of <plate tectonics>. With <Dan McKenzie>, he analysed how the relative motions of three plates constrain the evolution of a <triple junction>.<Evolution of Triple Junctions by Dan McKenzie and W. J. Morgan>[Triple-junction kinematics and boundary evolution]{ref}
The physical issue is compatibility: three separately specified boundary motions must meet at one moving junction. This makes a plate reconstruction more restrictive than drawing plausible boundary lines independently and helps distinguish configurations that can persist from those requiring a change of geometry.
Back to article page
