Salin Formation
| 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 / 24.0310278°S 68.1957750°W |
| Region | Antofagasta Region |
| Country | Chile |
  Salin Formation (Chile) | |
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]
References
[edit]- 1 2 3 Rissmann et al. 2015, p. 165.
- 1 2 Bravo Castro 2021, p. 57.
- 1 2 Lelli 2018, p. 23.
- ↑ Rissmann et al. 2015, p. 166.
- ↑ Anderson, Low & Foot 2002, p. 135.
- Bibliography
- Anderson, Mark; Low, Rob; Foot, Stephen (January 2002). "Sustainable groundwater development in arid, high Andean basins". Geological Society, London, Special Publications. 193 (1): 133–144. Bibcode:2002GSLSP.193..133A. doi:10.1144/GSL.SP.2002.193.01.11. ISSN 0305-8719. S2CID 130277537.
- Bravo Castro, Pedro Ignacio (2021). Estudio hidraúlico de aguas subterráneas de la zona de Monturaqui, Salar de Atacama, Chile (Thesis) (in Spanish). University of Chile. Retrieved 2025-07-22.
- Lelli, Matteo (2018). SOCOMPA GEOTHERMAL PROSPECT: Report on waters geochemistry (PDF) (Report). Retrieved 2025-07-07.
- Rissmann, Clinton; Leybourne, Matthew; Benn, Chris; Christenson, Bruce (March 2015). "The origin of solutes within the groundwaters of a high Andean aquifer". Chemical Geology. 396: 164–181. Bibcode:2015ChGeo.396..164R. doi:10.1016/j.chemgeo.2014.11.029.
