Toqui Formation
Toqui Formation Stratigraphic range: Tithonian ~ | |
---|---|
Type | Geological formation |
Unit of | Coihaique Group |
Underlies | Katterfeld Formation |
Overlies | |
Thickness | 300–320 m (980–1,050 ft) |
Lithology | |
Primary | Conglomerate, sandstone, tuffite, ignimbrite |
Location | |
Coordinates | 46°36′S 72°24′W / 46.6°S 72.4°WCoordinates: 46°36′S 72°24′W / 46.6°S 72.4°W |
Approximate paleocoordinates | 44°48′S 32°24′W / 44.8°S 32.4°W |
Region | Aysén Region |
Country | Chile |
Toqui Formation (Chile) |
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 and the mesoeucrocodylian Burkesuchus are known from the formation.[3][4] The formation was deposited in a fluvio-deltaic environment.[5]
See also[]
References[]
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. hdl:1885/37839. 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
Categories:
- Geologic formations of Chile
- Jurassic paleontological sites
- Mesozoic paleontological sites of South America
- Fossiliferous stratigraphic units of South America
- Jurassic System of South America
- Late Jurassic South America
- Jurassic Chile
- Tithonian Stage
- Conglomerate formations
- Sandstone formations
- Tuff formations
- Deltaic deposits
- Fluvial deposits
- Austral or Magallanes Basin
- Paleontology in Chile
- Geology of Aysén Region
- Geologic formation stubs