His research is focused on the origin of mountain chains and the plate tectonic history of eastern North America, including the Blue Ridge Mountains of North Carolina.
(His research; is focused; on the origin of mountain chains and the plate tectonic history of eastern North America, including the Blue Ridge Mountains of North Carolina)
His research
is focused
on the origin of mountain chains and the plate tectonic history of eastern North America, including the Blue Ridge Mountains of North Carolina