La Negrillar is a volcanic cone and associated lava flow in Chile. It covers 16 square kilometres (6.2 sq mi) on the southwestern margin of the Atacama basin. It erupted basalts and andesite and its flows and cones are well preserved.[1] Radiometric dating has yielded ages of 1.4 ± 0.5 and 0.54 ± 0.5 million years.[2] It is one of several mafic centres in the region located along fault systems.[3]
| La Negrillar | |
|---|---|
| Aguas Perdidas | |
 The lava flow just left of centre forms the La Negrillar cone and lava flow | |
| Highest point | |
| Elevation | 4,109 m (13,481 ft)[1] |
| Coordinates | 24°17′S 68°36′W / 24.28°S 68.6°W[1] |
| Geography | |
 | |
References
edit- ^ a b c "La Negrillar". Global Volcanism Program. Smithsonian Institution. 3 September 2015.
- ^ Loaiza, Camila; Larrea, Patricia; Salinas, Sergio; Parra-Encalada, Daniela; Cartagena, Rubén; Godoy, Benigno (2 December 2023). "The temporal evolution of monogenetic volcanism in the Central Andes: 40Ar/39Ar geochronology of El Negrillar volcanic field, Chile". Bulletin of Volcanology. 86 (1): 14. doi:10.1007/s00445-023-01691-8.
- ^ Shanaka L. De Silva; Peter Francis (1991). Volcanoes of the Central Andes. Springer-Verlag. p. 90. ISBN 978-0-387-53706-1.
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