Laguna Brava Formation

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	28.5°S 68.8°W
Approximate paleocoordinates	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

1. Quebrada de Santa Domingo at Fossilworks.org
2. 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
3. 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