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As the name implies, the streams of this area have cut deep valleys with steep sided-slopes on the surrounding ridges. Some of the gorges are at least 1,000 feet (305 m) deep. Much of the area was forested at the end of the 19th century, and much of the area is owned by the Pennsylvania Bureau of Forestry.
The following is a list of the mapped bedrock units in Pennsylvania. The rocks are listed in stratigraphic order. The rocks are listed in stratigraphic order. [ 1 ]
Blue Knob, a notable ski resort and recreational area, is also the state's second highest point at 3146 feet/959 m (after Mount Davis in Somerset County to the west). A transpression structure is located on the northern border of the county (shared with Blair County), about three miles east of the town of Woodbury.
Morrisons Cove [1] (also referred to as Morrison Cove or Morrison's Cove), is an eroded anticlinal valley [2] in Blair and Bedford counties of central Pennsylvania, United States, extending from Evitts Mountain near New Enterprise, north to the Frankstown Branch Juniata River at Williamsburg.
The Allegheny Group, often termed the Allegheny Formation, [2] is a Pennsylvanian-age geological unit in the Appalachian Plateau.It is a major coal-bearing unit in the eastern United States, extending through western and central Pennsylvania, western Maryland and West Virginia, and southeastern Ohio.
Rockhounding is allowed on these lands under non-commercial circumstances, including recreation, research and education. Individuals can hunt for rocks without a permit, groups need a non ...
Carbaugh Run Natural Area: Michaux: Adams: 780 acres (316 ha) Also a designated Reptile and Amphibian Protection Area, and founded to protect Native American archeological sites. [13] [21] Charles F. Lewis Natural Area: Gallitzin: Indiana: 384 acres (155 ha) Named after an area journalist and conservationist. [22] [23] Cranberry Swamp Natural ...
Pulpit Rocks is a geological formation adjacent to Pike Road, or Alexandria Pike Road, Old U.S. Route 22, northwest of Huntingdon in Huntingdon County, Pennsylvania.These weathered rock formations were instrumental in the determination of the stratigraphy of the Appalachian Mountains in the mid-19th century by the Pennsylvania Geological Survey.