Marambaia Formation
| Marambaia Formation | |
|---|---|
| Stratigraphic range: Paleocene-Pliocene ~ | |
| Type | Geological formation |
| Unit of | Itamambuca Group |
| Underlies | Sepetiba Formation |
| Overlies | Itajaí-Açu Fm., Juréia Fm. |
| Thickness | up to 2,700 m (8,900 ft) |
| Lithology | |
| Primary | Shale, marl |
| Other | Sandstone |
| Location | |
| Coordinates | 26°6′S 43°43′W / 26.100°S 43.717°W |
| Region | Santos Basin, South Atlantic |
| Country | Brazil |
| Type section | |
| Named for | Restinga da Marambaia |
Location of the Santos Basin | |
The Marambaia Formation (Portuguese: Formacão Marambaia) is a geological formation of the Santos Basin offshore of the Brazilian states of Rio de Janeiro, São Paulo, Paraná and Santa Catarina. The predominantly shale and marl formation dates to the Tertiary period and has a maximum thickness of 2,700 metres (8,900 ft). The formation is a seal and reservoir rock of the Atlanta and Oliva Fields in the Santos Basin.