Toqui Formation
The Toqui Formation is a geological formation in the Aysén Region of southern Chile. It has been dated to the Tithonian stage of the Late Jurassic by uranium–lead dating of zircons, providing an age of 147 ± 0.1 Ma.[1] It consists of an sequence of clastic sedimentary sandstones and conglomerates, interbedded with volcanic tuffs and ignimbrite.[2] The dinosaurs Chilesaurus and indeterminate diplodocids are known from the formation.[3][4] The formation was deposited in a fluvio-deltaic environment.[5]
| Toqui Formation Stratigraphic range: Tithonian ~147 Ma | |
|---|---|
 Cast of Chilesaurus from the Toqui Formation | |
| Type | Geological formation |
| Unit of | Coihaique Group |
| Underlies | Katterfeld Formation |
| Overlies | Ibáñez Formation |
| Thickness | 300–320 m (980–1,050 ft) |
| Lithology | |
| Primary | Conglomerate, sandstone, tuffite, ignimbrite |
| Location | |
| Coordinates | 46.6°S 72.4°W |
| Approximate paleocoordinates | 44.8°S 32.4°W |
| Region | Aysén Region |
| Country |  Chile |
  Toqui Formation (Chile) | |
See also
References
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Wikimedia Commons has media related to Toqui Formation. |
- Suárez, Manuel; De La Cruz, Rita; Fanning, Mark; Novas, Fernando; Salgado, Leonardo (2015-12-28). "Tithonian age of dinosaur fossils in central Patagonian, Chile: U–Pb SHRIMP geochronology". International Journal of Earth Sciences. 105 (8): 2273–2284. doi:10.1007/s00531-015-1287-7. ISSN 1437-3254.
- Salgado, Leonardo; Cruz, Rita Dela; Suárez, Manuel; Fernández, Marta; Gasparini, Zulma; Palma-Heldt, Sylvia; Fanning, Mark (2008-06-12). "First Late Jurassic dinosaur bones from Chile". Journal of Vertebrate Paleontology. 28 (2): 529–534. doi:10.1671/0272-4634(2008)28[529:fljdbf]2.0.co;2. ISSN 0272-4634.
- Novas, Fernando E.; Salgado, Leonardo; Suárez, Manuel; Agnolín, Federico L.; Ezcurra, Martín D.; Chimento, Nicolás R.; de la Cruz, Rita; Isasi, Marcelo P.; Vargas, Alexander O. (2015-04-27). "An enigmatic plant-eating theropod from the Late Jurassic period of Chile". Nature. 522 (7556): 331–334. doi:10.1038/nature14307. ISSN 0028-0836. PMID 25915021.
- Salgado, Leonardo; Novas, Fernando E.; Suarez, Manuel; Cruz, Rita De La; Isasi, Marcelo; Rubilar-Rogers, David; Vargas, Alexander (August 2015). "Late Jurassic Sauropods in Chilean Patagonia". Ameghiniana. 52 (4): 418–429. doi:10.5710/amgh.07.05.2015.2883. ISSN 0002-7014.
- Toqui Formation, Aysén at Fossilworks.org
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