Marathon, TX, United States
Denuded Ouachita Rock Belt. In highway cuts toward the east are excellent exposures of almost vertical rocks layers--part of the Ouachita Fold Belt, a northeasterly trending folded and faulted mountainous range which was uplifted about 275 to 290 million years ago. The deformation is comparable in a
ge to the uplift that formed the Appalachian Range of the eastern United States. The term "Ouachita" for this earth formation comes from the Ouachita Mountains of Arkansas and Oklahoma. (These were na
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