| Azapa Formation | |
|---|---|
| Stratigraphic range: Oligocene | |
| Underlies | Oxaya Formation |
| Lithology | |
| Primary | Fluvial gravel |
| Location | |
| Region | Arica y Parinacota Region |
| Country |  Chile |
Azapa Formation (Spanish: Formación Azapa) is a geological formation in northern Chile made up of gravels of fluvial origin. It is conformably overlain by Oxaya Formation.[1] Azapa Formation is deformed by the Oxaya anticline.[2]
- ^ García, Marcelo; Herail, Gérard; Charrier, Reynaldo (1999). Age and structure of the Oxaya Anticline: A major feature of the Miocene compressive structures of northernmost Chile (PDF). Fourth ISAG. Goettingen, Germany. pp. 249–252.
- ^ Zeilinger, Gerold; Schlunegger, Fritz; Simpson, Guy (2005). "The Oxaya anticline (northern Chile): a buckle enhanced by river incision?". Terra Nova (17): 368–375.