Cutoff Formation

Cutoff Formation
Cutoff Formation
Stratigraphic range: Cisuralian to Guadalupian PreꞒ Ꞓ O S D C P T J K Pg N
Type	Formation
Underlies	Cherry Canyon Formation ; Brushy Canyon Formation
Overlies	Bone Spring Formation ; Victorio Peak Formation
Thickness	233 feet (71 m)
Lithology
Primary	Shale
Location
Coordinates	32°00′07″N104°55′16″W / 32.002°N 104.921°W
Region	Texas ; New Mexico
Country	United States
Type section
Named for	Cutoff Mountain
Named by	King
Year defined	1942
	Cutoff Formation (the United States) Cutoff Formation (New Mexico)

Last updated February 12, 2024

The Cutoff Formation is a geologic formation in Texas and New Mexico, US. It preserves fossils dating back to the Permian period.

Description

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. In age, the formation straddles the Cisuralian - Guadalupian boundary.^[2] It lies atop the Victorio Peak or Bone Spring Formation and is overlain by the Brushy Canyon Formation or Cherry Canyon Formation. Both these formations fill paleocanyons cut deeply in the Cutoff Formation, in some cases cutting clear through to the underlying Bone Springs or Victorio Peak beds.^[3]

The formation is interpreted as a deep basin formation deposited on a drowned shelf to basin topography. It contains numerous turbidite sequences.^[4]

Fossils

Limestone beds of the formation contain chonetid brachiopods ( Chonetes ) and gastropods. The formation includes a few massive limestone beds that contain a diverse assemblage of fossils, including fusulinids, corals, and crinoids. Other fossils include the shark Helicoprion , the ammonoids Pseudogastrioceras and Perrinites hilli, the nautiloid Foordiceras , and the fusulinid Parafusulina .^[1]

History of investigation

The unit was first designated as the Cutoff shaly member of the Bone Spring Limestone by P.B. King in 1942, for exposures on the west face of Cutoff Mountain near the New Mexico - Texas border.^[5]

Related Research Articles

<span class="mw-page-title-main">Permian Basin (North America)</span> Large sedimentary basin in the US

The Permian Basin is a large sedimentary basin in the southwestern part of the United States. It is the highest producing oil field in the United States, producing an average of 4.2 million barrels of crude oil per day in 2019. This sedimentary basin is located in western Texas and southeastern New Mexico. It reaches from just south of Lubbock, past Midland and Odessa, south nearly to the Rio Grande River in southern West Central Texas, and extending westward into the southeastern part of New Mexico. It is so named because it has one of the world's thickest deposits of rocks from the Permian geologic period. The greater Permian Basin comprises several component basins; of these, the Midland Basin is the largest, Delaware Basin is the second largest, and Marfa Basin is the smallest. The Permian Basin covers more than 86,000 square miles (220,000 km²), and extends across an area approximately 250 miles (400 km) wide and 300 miles (480 km) long.

The Cherry Canyon Formation is a geologic formation found in the Delaware Basin of southeastern New Mexico and western Texas. It contains fossils characteristic of the Guadalupian Age of the Permian Period.

The Bell Canyon Formation is a geologic formation found in the Delaware Basin of southeastern New Mexico and western Texas. It contains fossils characteristic of the Guadalupian Age of the Permian Period.

The Bishop Cap Formation is a geologic formation in the Franklin Mountains of southern New Mexico and western Texas and the Hueco Mountains of western Texas. It preserves fossils dating back to the Moscovian to Kasimovian Ages of the early Pennsylvanian.

The Bone Spring Formation is a geologic formation found in the Delaware Basin in Texas and New Mexico. It preserves fossils dating back to the Leonardian Age of the Permian Period.

The Capitan Formation is a geologic formation found in western Texas and southeastern New Mexico. It is a fossilized reef dating to the Guadalupian Age of the Permian period.

The San Andres Formation is a geologic formation found in New Mexico and Texas. It contains fossils characteristic of the late Leonardian (Kungurian) Age) of the Permian Period.

The La Pasada Formation is a geologic formation in the southern Sangre de Cristo Mountains of New Mexico. It preserves fossils dating back to the early to middle Pennsylvanian.

The Panther Seep Formation is a geologic formation found in the mountain ranges of south-central New Mexico. It preserves fossils dating back to the late Pennsylvanian to early Permian.

The Sandia Formation is a geologic formation in New Mexico, United States. Its fossil assemblage is characteristic of the early Pennsylvanian.

The Alamitos Formation is a geologic formation exposed in the southern Sangre de Cristo Mountains of New Mexico. It preserves fossils dating back to the late Pennsylvanian to early Permian periods.

The Bursum Formation is a geologic formation in New Mexico. It preserves fossils dating back to the Early Permian period.

The Gray Mesa Formation is a geologic formation in New Mexico. Its fossil assemblage dates the formation to the Moscovian age of the Pennsylvanian.

The Berino Formation is a geologic formation in the Franklin Mountains of southern New Mexico and western Texas. It preserves fossils dating back to the middle Pennsylvanian.

The Abo Formation is a geologic formation in New Mexico. It contains fossils characteristic of the Cisuralian epoch of the Permian period.

The Atrasado Formation is a geologic formation in New Mexico. Its fossil assemblage dates the formation to the Kasimovian age of the Pennsylvanian. It was formerly known locally as the Wild Cow Formation or the Guadelupe Box Formation.

The Madera Group is a group of geologic formations in northern New Mexico. Its fossil assemblage dates the formation to the middle to late Pennsylvanian period.

The Porvenir Formation is a geologic formation exposed in the southeastern Sangre de Cristo Mountains of New Mexico. It preserves fossils dating back to the middle Pennsylvanian period.

The Lead Camp Limestone is a geologic formation in the San Andres Mountains of New Mexico. It preserves fossils dating back to the middle Pennsylvanian.

The Victorio Peak Formation is a geologic formation found in the Delaware Basin in Texas and New Mexico. It preserves fossils dating back to the Leonardian Age of the Permian Period.

References

1 2 Boyd, D.W. (1958). "Permian sedimentary facies, central Guadalupe Mountains, New Mexico". New Mexico Bureau of Geology & Mineral Resources Bulletin. 49: 13–14. Retrieved 17 February 2022.
↑ Kues, B.S.; Giles, K.A. (2004). "The late Paleozoic Ancestral Rocky Mountain system in New Mexico". In Mack, G.H.; Giles, K.A. (eds.). The geology of New Mexico. A geologic history: New Mexico Geological Society Special Volume 11. p. 124. ISBN 9781585460106.
↑ Kues & Giles 2004, pp. 100, 122, 124].
↑ Amerman, Robert; Nelson, Eric P.; Gardner, Michael H.; Trudgill, Bruce (2011). "Submarine mass-transport deposits of the Permian Cutoff Formation, west Texas, U.S.A.: Internal architecture and controls on overlying reservoir sand deposition". Mass-transport deposits in deepwater settings (PDF). Tulsa, Oklahoma, U.S.A.: Society for Sedimentary Geology. pp. 235–267. ISBN 978-1-56576-287-9 . Retrieved 18 February 2022.
↑ King, P.B. (1942). "Permian of West Texas and Southeastern New Mexico: PART 2". AAPG Bulletin. 26 (4): 650–763. doi:10.1306/3D933468-16B1-11D7-8645000102C1865D.

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[Boyd1958-1] 1 2 Boyd, D.W. (1958). "Permian sedimentary facies, central Guadalupe Mountains, New Mexico". New Mexico Bureau of Geology & Mineral Resources Bulletin. 49: 13–14. Retrieved 17 February 2022.

[KuesGiles2004-2] Kues, B.S.; Giles, K.A. (2004). "The late Paleozoic Ancestral Rocky Mountain system in New Mexico". In Mack, G.H.; Giles, K.A. (eds.). The geology of New Mexico. A geologic history: New Mexico Geological Society Special Volume 11. p. 124. ISBN 9781585460106.

[FOOTNOTEKuesGiles2004100,_122,_124]-3] Kues & Giles 2004, pp. 100, 122, 124].

[4] Amerman, Robert; Nelson, Eric P.; Gardner, Michael H.; Trudgill, Bruce (2011). "Submarine mass-transport deposits of the Permian Cutoff Formation, west Texas, U.S.A.: Internal architecture and controls on overlying reservoir sand deposition". Mass-transport deposits in deepwater settings (PDF). Tulsa, Oklahoma, U.S.A.: Society for Sedimentary Geology. pp. 235–267. ISBN 978-1-56576-287-9 . Retrieved 18 February 2022.

[King1942-5] King, P.B. (1942). "Permian of West Texas and Southeastern New Mexico: PART 2". AAPG Bulletin. 26 (4): 650–763. doi:10.1306/3D933468-16B1-11D7-8645000102C1865D.

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