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Geologic formation in Oklahoma and Arkansas, United States
The Jackfork Sandstone, also referred to as the Jackfork Group, is a geologic formation associated with the Ouachita Fold and Thrust Belt exposed in western
Jackfork_Sandstone
Mountain in Pulaski County, Arkansas
rock, the Jackfork Sandstone. Named after Jackfork Mountain in Oklahoma, the Jackfork Sandstone is an exceptionally hard quartzitic sandstone; weathered
Pinnacle_Mountain_(Arkansas)
Mountain range in Arkansas and Oklahoma, United States
continuous chain of east-west mountains composed of the weather-resistant Jackfork Sandstone. They extend from Pulaski County, Arkansas to Atoka County, Oklahoma
Ouachita_Mountains
Protected area in Arkansas, US
geologic formations: Pennsylvanian Jackfork Sandstone and Mississippian Stanley Shale. Because Jackfork Sandstone is composed almost entirely of quartz
Flatside_Wilderness
Interchange in Little Rock, Arkansas
alleviate congestion. In 2011 an outcropping of Pennsylvanian Jackfork Formation sandstone and surrounding shale was discovered in the southeast quadrant
Big_Rock_Interchange
Geologic formation in Arkansas and Oklahoma, United States
Formation Underlies Atoka Formation Overlies Jackfork Sandstone Lithology Primary Shale Other Sandstone Location Region Arkansas and Oklahoma Country
Johns_Valley_Formation
Geologic formation in Arkansas and Oklahoma, United States
2018. White, David (1937). "Fossil plants from the Stanley shale and Jackfork sandstone in southeastern Oklahoma and western Arkansas" (PDF). Geological Survey
Stanley_Shale
State park in Arkansas, United States
trailhead at the Pinnacle Mountain State Park sign that will take you to the Jackfork Trail. Shinall Mountain "Arkansas State Parks Guide". Arkansas Department
Pinnacle_Mountain_State_Park
Mountain in southeastern Oklahoma
Moyers, Oklahoma. White Rock Mountain is part of the sandstone Wildhorse Formation, part of the Jackfork Group, for stratigraphic nomenclature, along with
White_Rock_Mountain
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