Outcrop of Huntley Mountain Formation along old railroad bed parallel to Loyalsock Creek north of Laporte, Pennsylvania
The formation is composed of relatively soft grayish-red
shale and olive-gray
sandstone. It is located in north central Pennsylvania.[1][2][3]
Haystacks
The Haystacks are enigmatic mounds of sandstone that outcrop in Loyalsock Creek south of
Dushore in
Sullivan County. They are a single
bed of
quartzsandstone with an undulating upper surface with up to one meter relief. The origin of the mounds is debatable.[4]
Geologist William E. Edmunds argues that the Huntley Mountain Formation is laterally equivalent to the
Rockwell Formation (originally described in
West Virginia) and the
Spechty Kopf Formation. He proposes that the
Pocono Formation be reinstated as "the dominantly non-red, non-marine clastic sequence between the
Catskill and
Mauch Chunk Formations", with the Huntley Mountain, Beckville, Burgoon, Rockwell, Mt. Carbon, and Spechty Kopf Formations demoted to the status of members of the Pocono Formation.[5] Other workers support this interpretation.[6]
^"Map 67: Tabloid Edition Explanation"(PDF). Pennsylvania Department of Conservation and Natural Resources, Bureau of Topographic and Geologic Survey. Archived from
the original(PDF) on February 25, 2009.
^The Haystacks, "Ricketts Folly," and The End of the World: Geology of the Glaciated Allegheny High Plateau, Sullivan, Luzerne, and Columbia Counties, Pennsylvania, 71st Annual Field Conference of Pennsylvania Geologists
[1] (field trip guide book), J. D. Inners, G. M. Fleeger, eds., 2006
^Lessing, Peter, Dean, S.L., and Kulander, B.R., 1992, Stratigraphy and structure of Meadow Branch synclinorium, West Virginia: Southeastern Geology, v. 32, no. 3, p. 166-174.
Upper Warren, Lower Warren, Speechely Stray, Speechely, Balltown A, Balltown B, Balltown C, Sheffield, First Bradford, Second Bradford, Third Bradford, Kane