Huntley Mountain Formation






































Huntley Mountain Formation
Stratigraphic range: Late Devonian to Early Mississippian

Haystacks1 Loyalsock Creek Sullivan Co PA.jpg
The Haystacks of Loyalsock Creek in Laporte Township, Sullivan County, Pennsylvania are a quartzite bed of the Huntley Mountain Formation

Type sedimentary
Underlies Burgoon Sandstone
Lithology
Primary sandstone, shale
Location
Region Appalachian Mountains
Extent Pennsylvania
Type section
Named for Huntley Mountain, Lycoming County, Pennsylvania
Named by Berg and Edmunds, 1978

The Huntley Mountain Formation is a late Devonian and early Mississippian mapped bedrock unit in Pennsylvania, in the United States.




Contents






  • 1 Description


    • 1.1 Haystacks


    • 1.2 Notable Exposures




  • 2 Stratigraphy


  • 3 References


  • 4 See also





Description




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 quartz sandstone with an undulating upper surface with up to one meter relief. The origin of the mounds is debatable.[4]



Notable Exposures



  • The type section of the formation is at Huntley Mountain in Lycoming County, Pennsylvania, on the mountainside just north of the village of Waterville.

  • Base of the Loyalsock Creek gorge in Worlds End State Park

  • Haystacks beds, also in Loyalsock Creek



Stratigraphy


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]



References




  1. ^ Berg, T.M. (1981). "Atlas of Preliminary Geologic Quadrangle Maps of Pennsylvania: Eagles Mere" (PDF). Pennsylvania Department of Conservation and Natural Resources, Bureau of Topographic and Geologic Survey. Retrieved 2008-05-21..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output .citation q{quotes:"""""""'""'"}.mw-parser-output .citation .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12px-Wikisource-logo.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-maint{display:none;color:#33aa33;margin-left:0.3em}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}


  2. ^ "Map 67: Tabloid Edition Explanation" (PDF). Pennsylvania Department of Conservation and Natural Resources, Bureau of Topographic and Geologic Survey.


  3. ^ Royer, Denise W. "Pennsylvania Trail of Geology, Worlds End State Park, Sullivan County, Geologic Features of Interest (Park Guide 12)" (PDF). Pennsylvania Department of Conservation and Natural Resources. Retrieved 2007-08-28.


  4. ^ 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


  5. ^ Edmunds, William E (1996). "Correlation Chart showing Suggested Revisions of Uppermost Devonian through Permian Stratigraphy, Pennsylvania" (PDF). Harrisburg: Pennsylvania Geological Survey, Fourth Series. Retrieved 2008-06-03.


  6. ^ 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.



See also


  • Geology of Pennsylvania











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