Salin Formation
Geological formation in northern Chile
From Wikipedia, the free encyclopedia
Salin Formation (Spanish: Formación Salin) is a geological formation composed of alternations of volcanic sand, silt and gravel in inland Antofagasta Region, northern Chile.[1][2] The formation is poorly consolidated and include layers of volcanic ash and evaporite as well as lacustrine sediments.[1][3] The formation is overlaid by a permeable ignimbrite.[2] Based on geochemical similarities Socompa volcano may be the source for the upper units of the formation.[4] The formation is the main water-bearing geological unit of the Monturaqui-Negrillar-Tilopozo Aquifer.[1][5] The formation has been estimated to have medium to high permeability.[3]
| Salin Formation | |
|---|---|
| Stratigraphic range: Miocene-Pliocene | |
| Type | Geological formation |
| Unit of | Salar de Atacama basin |
| Thickness | c. 200 m |
| Lithology | |
| Primary | Volcaniclastic sand, silt and gravel |
| Other | Volcanic ash, evaporite |
| Location | |
| Coordinates | 24°1′51.70″S 68°11′44.79″W |
| Region | Antofagasta Region |
| Country | Chile |
  Salin Formation (Chile) | |