Toqui Formation
Geologic formation in the Aysén Region, Chile / From Wikipedia, the free encyclopedia
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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]
Quick Facts Type, Unit of ...
Toqui Formation | |
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Stratigraphic range: Tithonian ~147 Ma | |
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 / -46.6; -72.4 |
Approximate paleocoordinates | 44.8°S 32.4°W / -44.8; -32.4 |
Region | Aysén Region |
Country | Chile |
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