| Moquegua Basin | |
| Other Name: | Cuenca Moquegua |
| Named For: | City of Moquegua, Peru |
| Pushpin Map: | Peru |
| Pushpin Relief: | 1 |
| Coordinates: | -16.8°N -118°W |
| Location: | Western South America |
| State: | Department of Moquegua |
| Cities: | Moquegua |
| Onoffshore: | Onshore |
| Partof: | Circum-Pacific forearc basins |
| Seas: | Eastern Pacific Ocean |
| Rivers: | Osmore River |
| Basin Type: | Forearc basin |
| Orogeny: | Andean |
| Age: | Cenozoic |
Moquegua Basin is a sedimentary basin in southernmost Peru. Sedimentary rocks of the basin, including those of Moquegua Group,[1] crop out in the Central Depression makes up part of the sedimenty fill of the basin. The basement of the basin is made of rocks older than the Cenozoic.[2]
Despite being close to the Pacific Ocean Moquegua Basin appear to have been unaffected by the Oligo-Miocene marine transgression that affected many other basins of western South America such as nearby Pisco Basin.[3] Concurrent with Andean uplift it is thought that the basin went from having a “balanced basin-fill” between Oligocene and Middle Miocene having a “overfilled basin-fill” from the Middle Miocene to the present.[1]