| Santos Formation | |
|---|---|
| Stratigraphic range: Cenomanian-Maastrichtian ~100–66 Ma PreꞒ Ꞓ O S D C P T J K Pg N | |
| Type | Geological formation |
| Unit of | Frade Group |
| Underlies | Iguape Formation |
| Overlies | Florianópolis Formation |
| Thickness | up to 2,700 m (8,900 ft) |
| Lithology | |
| Primary | Conglomerate |
| Other | Sandstone, shale |
| Location | |
| Coordinates | 26°6′S 43°43′W / 26.100°S 43.717°W / -26.100; -43.717 |
| Region | Santos Basin, South Atlantic |
| Country |  Brazil |
| Type section | |
| Named for | Santos |
 Location of the Santos Basin | |
The Santos Formation (Portuguese: Formacão Santos) 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 conglomeratic sandstone formation with interbedded shales dates to the Late Cretaceous period; Cenomanian-Maastrichtian epochs and has a maximum thickness of 2,700 metres (8,900 ft).
Etymology
The formation is as the Santos Basin named after the city of Santos, São Paulo.
Description
The Santos Formation is 1,275 to 2,700 metres (4,183 to 8,858 ft) thick, and consists of reddish lithic conglomerates and sandstones, interbedded with grey shales and reddish clays. These facies are interbedded and change laterally into the Itajai-Açu and Juréia Formations. The depositional environment is thought to be transitional continental to marginal marine, ranging from alluvial to braided rivers and deltas. Biostratigraphic data indicate a Late Cretaceous age (Cenomanian-Maastrichtian).
See also
References
- Kiang Chang et al., 2008, p.32
- Clemente, 2013, p.23
Bibliography
- Clemente, Pilar (2013), Petroleum geology of the Campos and Santos basins, Lower Cretaceous Brazilian sector of the South Atlantic margin, Danmarks Tekniske Universitet, pp. 1–33, retrieved 2017-09-04
- Kiang Chang, Hung; Assine, Mario Luis; Santos Corrêa, Fernando; Setsuo Tinen, Julio; Campane Vidal, Alexandre; Koike, Luzia (2008), "Sistemas petrolíferos e modelos de acumulação de hidrocarbonetos na Bacia de Santos" (PDF), Revista Brasileira de Geociências, 38: 29–46, doi:10.25249/0375-7536.2008382S2946 (inactive 1 November 2024), retrieved 2017-09-04
{{citation}}: CS1 maint: DOI inactive as of November 2024 (link)
- Geologic formations of Brazil
- Santos Basin
- Cretaceous Brazil
- Upper Cretaceous Series of South America
- Maastrichtian Stage of South America
- Campanian Stage
- Santonian Stage
- Coniacian Stage
- Turonian Stage
- Cenomanian Stage
- Conglomerate formations
- Sandstone formations
- Shale formations
- Alluvial deposits
- Fluvial deposits
- Deltaic deposits
- Geography of Paraná (state)
- Geography of Rio de Janeiro (state)
- Geography of Santa Catarina (state)
- Geography of São Paulo (state)