| Quebrada del Barro Formation | |
|---|---|
| Stratigraphic range: Norian | |
| Type | Geological formation |
| Unit of | Marayes Group |
| Underlies | Los Riscos Formation |
| Overlies | Carrizal Formation |
| Lithology | |
| Primary | Sandstone |
| Other | Siltstone |
| Location | |
| Coordinates | 31°54′S 67°12′W / 31.9°S 67.2°W |
| Approximate paleocoordinates | 40°48′S 30°00′W / 40.8°S 30.0°W |
| Region | San Juan Province |
| Country |  Argentina |
| Extent | Marayes-El Carrizal Basin |
  Quebrada del Barro Formation (Argentina) | |
The Quebrada del Barro Formation is a geological formation of the Marayes-El Carrizal Basin in San Juan Province, Argentina. This formation is the most fossiliferous portion of the Triassic Marayes Group, and is also the youngest unit of the group, overlying the El Carrizal Formation. An unconformity at the top of the Quebrada del Barro Formation separates it from the Cretaceous-age Los Riscos Formation of the El Gigante Group.[1][2][3][4] Part of the formation may be made into a provincial park following the discovery of the fossils of Ingentia, a giant sauropodomorph dinosaur which helped elucidate the early evolution of sauropods.[5]
- ^ Gardini et al., 2009, p.554
- ^ Cite error: The named reference
Leyesauruswas invoked but never defined (see the help page). - ^ Cite error: The named reference
Martinez2015was invoked but never defined (see the help page). - ^ Cite error: The named reference
Archosauriformes2016was invoked but never defined (see the help page). - ^ "Uac wants a provincial park in the cradle of Ingenia Prima". Naaju. Retrieved 2018-07-15.