Cuyo Basin
Cuyo Basin (Spanish: Cuenca Cuyana) is a sedimentary basin in Mendoza Province, western Argentina. The Cuyo Basin has a NNW-SSE elongated shape and is limited to the west by the Sierra Pintada System and to the east by the Pampean pericraton. To the north the basin reaches the area around the city of Mendoza.[1]
| Cuyo Basin | |
|---|---|
| Cuenca Cuyana | |
  Location of the basin in Argentina | |
| Coordinates | 34°15′S 68°34′W |
| Etymology | Cuyo River |
| Country |  |
| State(s) | Mendoza, San Juan |
| Cities | Mendoza |
| Characteristics | |
| On/Offshore | Onshore |
| Boundaries | Andes |
| Part of | Andean foreland basins |
| Area | ~30,000 km2 (12,000 sq mi) |
| Geology | |
| Basin type | Foreland basin |
| Plate | South American |
| Orogeny | Andean |
| Age | Triassic-Pliocene |
| Stratigraphy | Stratigraphy |
| Field(s) | Tupungato |
Description
The Cuyo Basin has an approximate area of 30,000 square kilometres (12,000 sq mi).[2] It has two major sub-basins: Cacheuta (Spanish: Subcuenca Cacheuta) in the north and Alvear (Spanish: Subcuenca Alvear) in the south. The northern fringes of Cacheuta sub-basin reaches into San Juan Province. The basin existed already during the Triassic but its current shape is derivative of the Andean orogeny.[1]
The basin originated as a rift basin in the context of extensional tectonics and crustal thinning that followed the Paleozoic Gondwanide orogeny.[note 1]
Stratigraphy
Its basal part hosts deposits of the Choiyoi Group.[3]
The overlying stratigraphy contain the following formations:[4]
- Neogene
- Huayquerías Formation (Huayquerian)
- Mogotes Formation
- La Pilona Formation
- Mariño Formation (Late Oligocene to Middle Miocene - Deseadan to Laventan)
- Paleogene
- Divisadero Largo Formation (Middle Eocene - Divisaderan)
- Papagayos Formation
- Mesozoic
- Punta de las Bardas Formation (Middle Jurassic to Early Cretaceous basalts)
- Barrancas Formation (Late Jurassic)
- Río Blanco Formation (Norian to Rhaetian)
- Cacheuta Formation (Carnian)
- Potrerillos Formation (Carnian)
- Las Cabras Formation (Anisian to Ladinian)
- Río Mendoza Formation (Early Triassic)
Notes and references
References
- "Cuenca Cuyana". Secretaría de Energía (in Spanish). Government of Argentina. Retrieved 30 November 2015.
- Zencich et al., 2008, p.110
- Spalletti, L.A.; Fanning, C.M.; Rapela, C.W. (2008). "Dating the Triassic continental rift in the southern Andes: the Potrerillos Formation, Cuyo Basin, Argentina". Geologica Acta. 6 (3): 267–283.
- Zencich et al., 2008, p.112
Bibliography
- General
- Zencich, Silvia; Héctor J. Villar, and Daniel Boggetti. 2008. Sistema petrolero Cacheuta-Barrancas de la Cuenca Cuyana, Provincia de Mendoza, Argentina, 109–134. Sistemas Petroleros de las Cuencas Andinas. Accessed 2017-08-21.
- Divisadero Largo Formation
- Simpson, G.G.; J.L. Minoprio, and B. Patterson. 1962. The mammalian fauna of the Divisadero Largo Formation, Mendoza, Argentina. Bulletin of the Museum of Comparative Zoology 127. 239–293. Accessed 2019-02-15.
- Huayquerías Formation
- Forasiepi, Analía M.; Ross D.E. MacPhee; Santiago Hernández del Pino; Gabriela I. Schmidt; Eli Amson, and Camille Grohé. 2016. Exceptional skull of Huayqueriana (Mammalia, Litopterna, Macraucheniidae) from the Late Miocene of Argentina: anatomy, systematics and paleobiological implications. Bulletin of the American Museum of Natural History 404. 1–76. Accessed 2018-10-01.
- Garrido, Alberto C.; Ricardo Bonini, and David L. Barbeau. 2017. Paleoambiente, edad y vertebrados de la Formación Huayquerías, Mioceno tardio, Provincia de Mendoza, Republica Argentina, 50–55. XX Congreso Geológico Argentino. Accessed 2018-09-10.
- Mariño Formation
- Cerdeño, Esperanza; Bárbara Vera, and Ana María Combina. 2018. A new early Miocene Mesotheriidae (Notoungulata) from the Mariño Formation (Argentina): Taxonomic and biostratigraphic implications. Journal of South American Earth Sciences 88. 118–131. Accessed 2019-02-11.
- Cerdeño, Esperanza, and M. Guiomar Vucetich. 2007. The first rodent from the Mariño Formation (Miocene) at Divisadero Largo (Mendoza, Argentina) and its biochronological implications. Andean Geology 34. 199–207. Accessed 2017-10-23.
Further reading
- Bally, A.W., and S. Snelson. 1980. Realms of subsidence. Canadian Society for Petroleum Geology Memoir 6. 9–94.
- Kingston, D.R.; C.P. Dishroon, and P.A. Williams. 1983. Global Basin Classification System. AAPG Bulletin 67. 2175–2193. Accessed 2017-06-23.
- Klemme, H.D. 1980. Petroleum Basins - Classifications and Characteristics. Journal of Petroleum Geology 3. 187–207. Accessed 2017-06-23.
Major South American geological features | |||||
|---|---|---|---|---|---|
| Tectonic plates |  | ||||
| Cratons and shields | |||||
| Structures undergoing subduction | |||||
| Faults and shear zones | |||||
| Rifts and grabens |
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| Sedimentary basins |
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| Orogenies |
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| Metallogenetic provinces | |||||
| Volcanism |
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Sedimentary basins of Argentina | ||||||
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| Onshore & offshore |
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| Offshore |
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| Sources |
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