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The Delaware Basin is a geologic depositional and structural basin in West Texas and southern New Mexico, famous for holding large oil fields and for a fossilized reef exposed at the surface. Guadalupe Mountains National Park and Carlsbad Caverns National Park protect part of the basin.
The Permian Basin comprises several component basins, including the Midland Basin, which is the largest; Delaware Basin, the second largest; and Marfa Basin, the smallest. The Permian Basin covers more than 86,000 square miles (220,000 km 2), [1] and extends across an area approximately 250 miles (400 km) wide and 300 miles (480 km) long. [2]
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The formation consists of up to 300 feet (91 m) [3] of gypsum or anhydrite with a few thin beds of limestone. [3] [2] The formation is found within the Delaware Basin and was deposited after the formation of the Capitan Formation, the fossil reef defining the margins of the Delaware Basin. [4]
The Cutoff Formation consists of 233 feet (71 m) [1] feet of thin limestone beds interbedded with dark shale and sandstone.It grades northwards into the San Andres Formation and is likely correlative with the upper part of the Bone Spring Formation within the Delaware Basin.
Permian Basin is in geology the name of two large intercontinental basins that were formed in the Permian period, neither of which are in Perm Krai: Permian Basin (North America) , a basin in the subsurface of the south of the United States, in west Texas and southeast New Mexico