Between The Hills - Geology

Geology

The Between the Hills Valley was formed by action along the Short Hill fault during the early Paleozoic era, which resulted in separation of the underlying rocks of the Blue Ridge and Short Hill mountains, which were deposited during the Catoctin Formation of the late Proterozoic period and uplifted during the Grenville Orogeny. Reactivation of the fault during the Alleghenian Orogeny caused further separation of underlying rock deposited during the middle and late Paleozoic era.