| Sergipe-Alagoas Basin | |
|---|---|
| "Bacia de Sergipe-Alagoas" | |
 | |
  | |
| Coordinates | 9°11′13″S 37°35′30″W / 9.18694°S 37.59167°W |
| Etymology | Sergipe and Alagoas |
| Location | South America |
| Region | Northeast |
| Country |  Brazil |
| State(s) | Sergipe, Alagoas, Pernambuco |
| Characteristics | |
| On/Offshore | onshore and offshore |
| Boundaries | Pernambuco Lineament & Itapuã Fault |
| Area | ~20,000 km2 (7,700 sq mi) to ~50,000 km2 (19,000 sq mi) |
| Geology | |
| Basin type | Rift basin |
| Plate | South American |
| Orogeny | Break-up of Gondwana |
| Age | Proterozoic-Recent |
| Stratigraphy | Stratigraphy |
The Sergipe-Alagoas Basin is a continental margin basin in the Sergipe and Alagoas states of northeastern Brazil, about 20 to 50 kilometres wide onshore, but with its widest extension offshore,[1] more precisely 13,000 km2 onshore and 40,000 km2 offshore.[2] In general, "Sergipe-Alagoas Basin" refers to the Sergipe and Alagoas sub-basins, but it also consists of the Jacuípe and Cabo sub-basins. Studies of the basin's geology date back to the first half of the 19th century, when J. Henderson in 1821 published preliminary notes on the region's geology.
The basin formed during the opening of the South Atlantic Ocean in the Late Jurassic and Cretaceous periods alongside other basins in the Brazilian coast.[1]
- ^ a b Souza-Lima, Wagner (2002). "The Sergipe-Alagoas Basin Geological evolution, stratigraphy and fossil content". Phoenix, Edição Especial. 1 (1): 1–34.
- ^ Bizzi, L. A. (2003). "Sedimentary Basins of the Brazilian Continental Margin" (PDF). Geologia, Tectônica e Recursos Minerais do Brasil. 1 (1): 87–94.