Mount Pisgah (York County, Pennsylvania)

Pisgah's view is an excellent place to gain knowledge of some effects of geology and topography on the economic development of this part of Pennsylvania.

Pisgah is developed on complexly folded and faulted metamorphic rocks that range in age from Precambrian to Ordovician (600 to 450 mya).

These metamorphic rocks were originally sedimentary strata such as sandstones, conglomerates, limestones, dolomites, and shales that formed in near shore and shallow marine environments.

The high pressures and temperatures of a mountain-building event (450 mya) along with deep burial caused recrystallization of the rocks into slates, phyllites, and schists.

Periods of folding and faulting along with erosion and intermittent uplift occurred for hundreds of millions of years to form the present landscape.

South-to-southeast view of the Susquehanna River Valley, Samuel S. Lewis State Park