Algarve Basin
{{short description|Sedimentary basin in Portugal}}
{{Infobox sedimentary basin
| name = Algarve Basin
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| named_for = Algarve
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| coordinates = {{coord|36.8|-8.0|display=inline,title}}
| location =
| region = Algarve
| country = Portugal
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| onoffshore = Onshore/offshore
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| basin_type = Extensional
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| age = Mesozoic
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The Algarve Basin is a Mesozoic sedimentary basin located in southernmost Portugal, extending southwards offshore. It was formed during the Late Triassic by rifting associated with the first stage of the break-up of the Pangaea supercontinent. The basin fill consists of two main sequences that represent the two main phases of rifting: Later Triassic to Early Jurassic and Middle Jurassic to Cenomanian. The basin was inverted during the Alpine orogeny in the Cenozoic.{{Cite journal |last=Ramos |first=A. |last2=Fernández |first2=O. |last3=Terrinha |first3=P. |last4=Muñoz |first4=J.A. |title=Extension and inversion structures in the Tethys–Atlantic linkage zone, Algarve Basin, Portugal |url=https://www.researchgate.net/profile/Adria_Ramos/publication/286488260_Extension_and_inversion_structures_in_the_Tethys-Atlantic_linkage_zone_Algarve_Basin_Portugal/links/588f3939aca272fa50e1980a/Extension-and-inversion-structures-in-the-Tethys-Atlantic-linkage-zone-Algarve-Basin-Portugal.pdf |journal=International Journal of Earth Sciences |volume=105 |pages=1663–1679 |doi=10.1007/s00531-015-1280-1}}