Areado Group

Areado Group
Stratigraphic range: Tithonian-Albian ~150–100 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Type	Group
Sub-units	Três Barras, Quiricó & Abaeté Formations
Underlies	Mata da Corda Group
Overlies	Bambuí Group
Lithology
Primary	Sandstone, claystone, conglomerate
Location
Coordinates	18.2°S 45.7°W / -18.2; -45.7
Approximate paleocoordinates	17.1°S 12.1°W / -17.1; -12.1
Region	Minas Gerais
Country	Brazil
Extent	São Francisco Basin
Type section
Named by	Cardoso
Year defined	1968
Areado Group (Brazil)

The Areado Group is a Late Jurassic to Early Cretaceous (Tithonian to Albian; covering approximately 50 million years)[1] geologic group in southeastern Brazil. The group was defined by Cardoso in 1968.[2]

Various fossil theropod tracks have been reported from the aeolic sandstones of the group.[3][4]

Stratigraphy

The group contains the following formations from young to old:[5]

• Albian Três Barras Formation - eolian and fluvio-deltaic sandstones
• Aptian Quiricó Formation - lacustrine claystones
• Tithonian-Barremian Abaeté Formation - fluvial conglomerates

See also

• List of dinosaur-bearing rock formations
  • List of stratigraphic units with theropod tracks

References

1. Carvalho & Kattah, 1998, p.56
2. Carvalho & Kattah, 1998, p.54
3. Carvalho & Kattah, 1998, pp.57-61
4. Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
5. Cristóvão Baptista, 2004, p.19

Bibliography

• Cristóvão Baptista, Marcos (2004), Estratigrafia e evolução geológica da região de Lagoa Formosa (MG) (MSc. thesis) (PDF), Universidade Federal de Minas Gerais, pp. 1–116, retrieved 2018-09-08
• Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (2004), The Dinosauria, 2nd edition, Berkeley: University of California Press, pp. 1–880, ISBN 0-520-24209-2, retrieved 2019-02-21
• Carvalho, I. d. S.; Kattah, S. d. S. (1998), "Dinosaur footprints from Sanfranciscana Basin, Minas Gerais State, Brazil", Anais da Academia Brasileira de Ciências, 70: 53–67, retrieved 2020-06-28