The Ouachita fold - whitish rock bands to the south and east of Marathon - were formed 250 to 290 million years ago, about the same time as the Appalachian Mountains in the eastern United States.
(The Ouachita fold - whitish rock bands to the south and east of Marathon; were formed; T:250 to 290 million years ago; T:about the same time as the Appalachian Mountains in the eastern United States)
The Ouachita fold - whitish rock bands to the south and east of Marathon
were formed
T:250 to 290 million years ago T:about the same time as the Appalachian Mountains in the eastern United States