Dunning Mountain is a stratigraphic

ridge A ridge or a mountain ridge is a geographical feature consisting of a chain of mountains or hills that form a continuous elevated crest for an extended distance. The sides of the ridge slope away from the narrow top on either side. The line ...

in central

Pennsylvania Pennsylvania (; ( Pennsylvania Dutch: )), officially the Commonwealth of Pennsylvania, is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States. It borders Delaware to its southeast, ...

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...

. The mountain's north end is at McKee Gap, which separates it from Short Mountain, and where Halter Creek flows westward towards the Frankstown Branch of the

Juniata River The Juniata River () is a tributary of the Susquehanna River, approximately long,U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map , accessed August 8, 2011 in central Pennsylvania. The river is c ...

. The south end of the mountain is contiguous with

Evitts Mountain Evitts Mountain is a stratigraphic ridge in the Ridge and Valley region of the Appalachian Mountains, located in Bedford County, Pennsylvania, and Allegany County, Maryland. Geography The ridge line runs north from Rocky Gap State Park in Mar ...

, but is marked by a sharp bend to the east. The valley formed by the bend is known as "The Kettle," and the broad valley to the east of Dunning Mountain is called

Morrisons Cove Morrisons Cove (also referred to as Morrison Cove or Morrison's Cove), is an eroded anticlinal valley in Blair and Bedford counties of central Pennsylvania, United States, extending from Evitts Mountain near New Enterprise, north to the Frankstow ...

. The town of Roaring Spring is located at the north end of the mountain on the east side.https://viewer.nationalmap.gov/advanced-viewer/ The National Map, retrieved 13 November 2018Pennsylvania State Game Lands Number 147
retrieved 14 November 2018 Route 869 crosses southern Dunning Mountain from Imler to Brumbaugh, and Route 1042 (Sproul Mountain Road) crosses it east of Sproul. Pennsylvania State Game Lands Number 147 is located on Dunning Mountain in several parcels from the Juniata River south to the slopes adjacent to Roaring Spring

Geology

Dunning Mountain is in the

Ridge and Valley The Ridge-and-Valley Appalachians, also called the Ridge and Valley Province or the Valley and Ridge Appalachians, are a physiographic province of the larger Appalachian division and are also a belt within the Appalachian Mountains extending ...

province of the

Appalachian Mountains The Appalachian Mountains, often called the Appalachians, (french: Appalaches), are a system of mountains in eastern to northeastern North America. The Appalachians first formed roughly 480 million years ago during the Ordovician Period. The ...

. It forms the west limb of a broad

anticline In structural geology, an anticline is a type of fold that is an arch-like shape and has its oldest beds at its core, whereas a syncline is the inverse of an anticline. A typical anticline is convex up in which the hinge or crest is t ...

, and

Tussey Mountain Tussey Mountain is a stratigraphic ridge in central Pennsylvania, United States, trending east of the Bald Eagle, Brush, Dunning and Evitts Mountain ridges. Its southern foot just crosses the Mason–Dixon line near Flintstone, Maryland, runn ...

forms the east limb. The erosion-resistant

Silurian The Silurian ( ) is a geologic period and system spanning 24.6 million years from the end of the Ordovician Period, at million years ago ( Mya), to the beginning of the Devonian Period, Mya. The Silurian is the shortest period of the Paleoz ...

Tuscarora Formation, a

quartzite Quartzite is a hard, non- foliated metamorphic rock which was originally pure quartz sandstone.Essentials of Geology, 3rd Edition, Stephen Marshak, p 182 Sandstone is converted into quartzite through heating and pressure usually related to tec ...

, outcrops along the crest of the ridge.Article title
PaGEODE, retrieved 13 November 2018

References

{{Mountains of Pennsylvania Ridges of Pennsylvania Allegheny Mountains Water gaps of Pennsylvania Ridges of Blair County, Pennsylvania Ridges of Bedford County, Pennsylvania

Geology

See also

References