Cerro Carnerero Formation | |
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Stratigraphic range: Toarcian-Bajocian ~ | |
Type | Geological formation |
Unit of | Lonco Trapial Group |
Underlies | Cañadón Puelman Formation |
Overlies | Los Tobianos Formation |
Thickness | 440 m (1,440 ft) |
Lithology | |
Primary | Claystone, tuff |
Other | Conglomerate |
Location | |
Coordinates | 44°00′S69°30′W / 44.0°S 69.5°W |
Approximate paleocoordinates | 41°48′S28°30′W / 41.8°S 28.5°W |
Region | Chubut Province |
Country | Argentina |
Extent | Golfo San Jorge Basin |
Type section | |
Named for | Cerro Carnerero |
Named by | Herbst |
Year defined | 1966 |
The Cerro Carnerero Formation is a geological formation of the Golfo San Jorge Basin in Chubut Province, Patagonia, Argentina. [1]
The claystones and tuffs of the approximately 440 metres (1,440 ft) thick formation, [2] belonging to the Lonco Trapial Group, [3] were deposited in a fluvial environment. [4]
The formation dates back to the Middle Jurassic (Toarcian stage) and has preserved fossils of Cladophlebis oblonga , [5] and Amygdalodon patagonicus . [6]
The fossiliferous beds rest on Liassic beds with Harpoceras subplanatum , and below the Middle to Upper Jurassic Porphyritic Series. Called the "Cerro Carnerero" beds, Rauhut, 2008, assigned the Cerro Carnerero to the Toarcian to Bajocian. [7]
The formation comprises sandy tuffs and bluish gray claystones, which form part of a continental sedimentary series mixed with porphyritic conglomerates with partly encrusted round pebbles, and bluish gray clays with sandy intercalations and clays in lesser amounts. [7]
Dinosaurs | ||||
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Taxa | Presence | Notes | Images | |
Genus:
| Chubut Province | "Partial skeleton" [6] [8] | ||
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