Areado Group
| Areado Group | |
|---|---|
| Stratigraphic range: Tithonian-Albian ~ | |
| 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°12′S 45°42′W / 18.2°S 45.7°W |
| Approximate paleocoordinates | 17°06′S 12°06′W / 17.1°S 12.1°W |
| 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
References
Bibliography
Categories:
- Geologic groups of South America
- Geologic formations of Brazil
- Jurassic System of South America
- Late Jurassic South America
- Jurassic Brazil
- Tithonian Stage
- Lower Cretaceous Series of South America
- Cretaceous Brazil
- Albian Stage
- Aptian Stage
- Barremian Stage
- Hauterivian Stage
- Valanginian Stage
- Berriasian Stage
- Sandstone formations
- Conglomerate formations
- Shale formations
- Aeolian deposits
- Deltaic deposits
- Fluvial deposits
- Lacustrine deposits
- Ichnofossiliferous formations
- Geography of Minas Gerais