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The
Jackfork Sandstone is a thin- to massive-bedded, fine- to coarse-grained, brown, tan, or gray quartzitic sandstone with subordinate brown, silty sandstone and dark gray shale. It outcrops from
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in the west, a distance of over 200 miles. It is highly weather-resistant, resulting in a continuous chain of prominent ridges, including
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518:"Fossil plants from the Stanley Shale and Jackfork Sandstone in southeastern Oklahoma and western Arkansas"
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423:"Stratigraphic Summary of the Arkansas River Valley and Ouachita Mountains"
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associated with the
Ouachita Fold and Thrust Belt exposed in western
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Jackfork
Mountain, Pittsburg and Pushmataha Counties, Oklahoma
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U.S. Geological Survey
Geological Atlas of the United States
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Taff, J.A. (1902). "Description of the Atoka quadrangle".
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Geologic formation in
Oklahoma and Arkansas, United States
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425:. Arkansas Geological Survey. Archived from
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176:. It is named for Jackfork Mountain in
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449:"Description of the Atoka Quadrangle"
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44:Quartz from the Jackfork Sandstone
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613:Carboniferous geology of Oklahoma
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550:This article about a specific
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561:. You can help Knowledge by
456:Folios of the Geologic Atlas
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557:in the United States is a
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189:Pulaski County, Arkansas
447:Joseph A. Taff (1902).
608:Carboniferous Arkansas
193:Atoka County, Oklahoma
516:White, David (1937).
184:counties, Oklahoma.
104:Shale, conglomerate
83:3,500 to 6,000 feet
28:Stratigraphic range
201:Ouachita Mountains
166:geologic formation
158:Jackfork Sandstone
118:Ouachita Mountains
64:Johns Valley Shale
22:Jackfork Sandstone
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172:and southeastern
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230:Archaeocalamites
150:J. A. Taff, 1902
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563:expanding it
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431:. Retrieved
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134:Type section
374:T. gillhami
311:Neuropteris
602:Categories
433:2017-12-15
385:References
359:Sigillaria
222:A. parksii
207:Paleoflora
182:Pushmataha
555:formation
476:Q63225784
271:C. miseri
253:Calamites
178:Pittsburg
139:Named for
96:Sandstone
88:Lithology
80:Thickness
60:Underlies
54:Formation
472:Wikidata
266:C. menae
214:Aphlebia
174:Oklahoma
170:Arkansas
147:Named by
109:Location
70:Overlies
164:, is a
124:Country
93:Primary
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114:Region
521:(PDF)
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180:and
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
