Editing Fulton County, Pennsylvania (section)

==Geology==
Fulton County is situated within the [[Ridge-and-Valley Appalachians|Ridge and Valley]] [[United States physiographic region|physiographic province]], which is characterized by [[Fold (geology)|folded]] and [[Fault (geology)|faulted]] [[sedimentary rock]]s of early to middle [[Paleozoic]] age.<ref>{{cite web|url=http://docs.dcnr.pa.gov/topogeo/field/map13/index.htm|title=Geology, Map 13|website=www.dcnr.state.pa.us|access-date=November 26, 2018|archive-date=November 27, 2018|archive-url=https://web.archive.org/web/20181127022434/http://docs.dcnr.pa.gov/topogeo/field/map13/index.htm|url-status=dead}}</ref>

The [[Stratigraphy|stratigraphic record]] of sedimentary rocks within the county spans from the [[Cambrian]] Shadygrove Formation outcropping just south of McConnellsburg to the [[Pennsylvanian (geology)|Pennsylvanian]] Allegheny Group at the northernmost tip of the county. No [[Igneous Rock|igneous]] or [[Metamorphic Rock|metamorphic]] rocks of any kind exist within Fulton county.

Mountain ridges within Fulton County include [[Rays Hill]] (along the western border with Bedford County), [[Town Hill (Maryland−Pennsylvania)|Town Hill]], [[Sideling Hill]], Scrub Ridge, and Meadow Grounds Mountain, and all these are held up by the [[Mississippian age|Mississippian]] [[Pocono Formation]], made of [[quartz]] [[sandstone]] and [[Conglomerate (geology)|conglomerate]]. Rays Hill and Town Hill form a [[syncline]], as do Scrub Ridge and Meadow Grounds Mountain, and Sideling Hill itself is a syncline. Dickeys Mountain and [[Tuscarora Mountain]] (along the eastern border with Franklin County) also form a syncline, but these ridges are held up by the [[Tuscarora Formation]].  [[Broad Top]], located in the northeast corner of the county, is a plateau of relatively flat-lying rocks that are [[Stratigraphy|stratigraphically]] higher, and thus younger ([[Mississippian age|Mississippian]] and [[Pennsylvanian (geology)|Pennsylvanian]]), than most of the other rocks within the county. Broad Top extends into [[Huntingdon County, Pennsylvania|Huntingdon County]] to the north and [[Bedford County, Pennsylvania|Bedford County]] to the west.

All of Fulton County lies far to the south of the [[terminal moraine]], and thus it was never glaciated.<ref>{{cite web|url=http://www.docs.dcnr.pa.gov/cs/groups/public/documents/document/dcnr_016200.pdf |archive-url=https://ghostarchive.org/archive/20221009/http://www.docs.dcnr.pa.gov/cs/groups/public/documents/document/dcnr_016200.pdf |archive-date=October 9, 2022 |url-status=live|title=Geology, Map 59|website=www.dcnr.state.pa.us|access-date=November 26, 2018}}</ref>  However, during the [[Pleistocene]] epoch, or "Ice Age," [[periglacial]] (meaning "around glacier" or simply "cold") processes dominated. Most of the county was most likely a [[tundra]] during the Pleistocene.

The Broad Top [[Coal]] Field is located in [[Wells Township, Fulton County, Pennsylvania|Wells Township]] in the northwestern corner of the county.<ref>{{cite web|url=http://www.docs.dcnr.pa.gov/cs/groups/public/documents/document/dcnr_016203.pdf |archive-url=https://ghostarchive.org/archive/20221009/http://www.docs.dcnr.pa.gov/cs/groups/public/documents/document/dcnr_016203.pdf |archive-date=October 9, 2022 |url-status=live|title=Geology, Map 11|website=www.dcnr.state.pa.us|access-date=November 26, 2018}}</ref> The field contains [[bituminous coal]]. There are a few abandoned mines in the area, although [[acid mine drainage]] is not as much of an environmental problem in Fulton County as it is in adjacent [[Bedford County, Pennsylvania|Bedford]] and [[Huntingdon County, Pennsylvania|Huntingdon]] Counties.

Interesting geologic features within Fulton County include some of the following:
* The Meadow Grounds [[syncline]] west of McConnellsburg.
* A [[transpression]] structure is located on the east side of the Meadow Grounds syncline. This structure consists of a complex set of up-thrust [[Fault (geology)|fault]] blocks of [[Silurian]] and [[Devonian]] rocks bounded on all sides by north-trending faults.