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Toqui Formation information


Toqui Formation
Stratigraphic range: Tithonian
~147 Ma
PreꞒ
O
S
D
C
P
T
J
K
Pg
N
Cast of Chilesaurus from the Toqui Formation
TypeGeological formation
Unit ofCoihaique Group
UnderliesKatterfeld Formation
OverliesIbáñez Formation
Thickness300–320 m (980–1,050 ft)
Lithology
PrimaryConglomerate, sandstone, tuffite, ignimbrite
Location
Coordinates46°36′S 72°24′W / 46.6°S 72.4°W / -46.6; -72.4
Approximate paleocoordinates44°48′S 32°24′W / 44.8°S 32.4°W / -44.8; -32.4
RegionAysén Region
CountryToqui Formation Chile
Toqui Formation is located in Chile
Toqui Formation
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 ages between 148.7 ± 1.4 Ma and 147 ± 1.0 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][5] The formation was deposited in a fluvio-deltaic environment.[6]

  1. ^ 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.
  2. ^ 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.
  3. ^ 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). "An enigmatic plant-eating theropod from the Late Jurassic period of Chile". Nature. 522 (7556): 331–334. Bibcode:2015Natur.522..331N. doi:10.1038/nature14307. ISSN 0028-0836. PMID 25915021.
  4. ^ Salgado, Leonardo; Novas, Fernando E.; Suarez, Manuel; Cruz, Rita De La; Isasi, Marcelo; Rubilar-Rogers, David; Vargas, Alexander (2015). "Late Jurassic Sauropods in Chilean Patagonia". Ameghiniana. 52 (4): 418–429. doi:10.5710/amgh.07.05.2015.2883. hdl:11336/39545. ISSN 0002-7014.
  5. ^ Cite error: The named reference Novas2021 was invoked but never defined (see the help page).
  6. ^ Toqui Formation, Aysén at Fossilworks.org

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