150 by 80 miles (240 by 130 km) (evaporite facies)
Type section
Named for
Paradox Valley
Named by
Baker, Dante, and Reeside
Year defined
1933
Paradox Formation (the United States)
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Paradox Formation (Colorado)
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In geology, the Paradox Formation Is a Pennsylvanian age formation which consists of abundant evaporites with lesser interbedded shale, sandstone, and limestone. The evaporites are largely composed of gypsum, anhydrite, and halite. The formation is found mostly in the subsurface, but there are scattered exposures in anticlines in eastern Utah and western Colorado.[1] These surface exposures occur in the Black Mesa, San Juan and Paradox Basins and the formation is found in the subsurface in southwestern Colorado, southeastern Utah, northeastern Arizona and northeastern New Mexico.[2]
The formation is notable both for its petroleum resources and for its salt tectonics, which are responsible for many distinctive geologic features of the eastern Colorado Plateau. In addition to the anticline valleys, these include the grabens of the Needles District of Canyonlands National Park and the fins and arches of Arches National Park.
^Baker, A.A.; Dane, C.H.; Reeside, John B. Jr. (1933). "Paradox Formation of Eastern Utah and Western Colorado". AAPG Bulletin. 17. doi:10.1306/3D932B92-16B1-11D7-8645000102C1865D.
^"Geology of National Parks, Paradox Formation". Archived from the original on 2008-05-13. Retrieved 2012-01-07.
In geology, the ParadoxFormation Is a Pennsylvanian age formation which consists of abundant evaporites with lesser interbedded shale, sandstone, and...
Oman salt basins. Pennsylvanian age salt of the ParadoxFormation forms salt domes throughout the Paradox Basin in the US, which extends from eastern Utah...
Trail, Paradox, and Pinkerton Trail formations) and the Permian age Cutler Formation. Discoveries in the Cane Creek Shale of the ParadoxFormation have...
Trail Formation is the lowest member of the Hermosa Group, a group of geological formations deposited in the interior and margins of the Paradox basin...
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in Paradox Valley. The Paradox Basin, a geologic province throughout which the ParadoxFormation is found, also bears the name of the valley. Paradox Valley...
the ParadoxFormation in the dramatic site of Goosenecks State Park, Utah, notably Cataract Canyon. It is gray-colored above the multi-layered Paradox deep...
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lithified to become the ParadoxFormation, which in turn is part of the Hermosa Group. Compressed salt beds from the Paradox started to flow plastically...
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the Pinkerton Trail Formations. Once the supercontinents collided (see Tectonic Evolution above), the subsidence of the Paradox Basin and the uplift...
from the nearby mountain range, became the ParadoxFormation, itself a part of the Hermosa Group. Paradox salt beds started to flow later in the Pennsylvanian...
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of Durango, Colorado: 54 3 – Honaker Trail Formation 2 – ParadoxFormation 1 – Pinkerton Trail Formation The Supai Group members were created from marine...
limited to soils originating from the Morrison and Mancos Formations, and possibly the ParadoxFormation. The soils are clay rich in selenium, gypsum, and uranium...
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Regional setting: South-central Paradox Basin. Producing formation(s): Pennsylvanian-Upper Ismay zone of the ParadoxFormation approximately 5,500 feet depth...
written in the 1st century CE. The question represents an ancient folk paradox addressing the problem of origins and first cause. Aristotle, writing in...
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