Laguna Brava Formation (Spanish: Formación Laguna Brava), formerly referred to as Santo Domingo Formation, is a Late Eocene (Tinguirirican in the SALMA classification) sedimentary formation located in the Argentine Northwest.[1] The formation contains beds with fossil bird tracks described as Gruipeda dominguensis.[2]
| Laguna Brava Formation | |
|---|---|
| Stratigraphic range: Late Eocene (Tinguirirican) | |
| Type | Geological formation |
| Overlies | Quebrada Santo Domingo Formation |
| Lithology | |
| Primary | Sandstone, red beds, tuff |
| Location | |
| Coordinates | 28°30′S 68°48′W / 28.5°S 68.8°W |
| Approximate paleocoordinates | 30°36′S 60°36′W / 30.6°S 60.6°W |
| Region | Mendoza Province, Argentine Northwest |
| Country | Argentina |
| Extent | Precordillera |
| Type section | |
| Named for | Laguna Brava |
  Laguna Brava Formation (Argentina) | |
It was formerly thought that the formation was of Triassic age.[3]
References edit
- ^ Quebrada de Santa Domingo at Fossilworks.org
- ^ Vizán, H.; Geuna, S.; Melchor, R.; Bellosi, E.S.; Lagorio, S.L.; Vásquez, C.; Japas, M.S.; Ré, G.; Do Campo, M. (2013), "Geological setting and paleomagnetism of the Eocene red beds of Laguna Brava Formation (Quebrada Santo Domingo, northwestern Argentina)", Tectonophysics, 583: 105–123, Bibcode:2013Tectp.583..105V, doi:10.1016/j.tecto.2012.10.026, hdl:11336/84532
- ^ Melchor, Ricardo M.; de Valais, Silvina; Genise, Jorge F. (2013), "Retraction: Bird-like fossil footprints from the Late Triassic", Nature, 501 (7466): 262, Bibcode:2013Natur.501..262M, doi:10.1038/nature12497, PMID 23925120