106:. The caldera has an elliptical form trending northwest-southeast, with dimensions of 50 by 25 kilometres (31 mi × 16 mi). As the caldera formed, some volcanoes collapsed into the depression. Ignimbrites from the eruption partly filled the caldera, whose scarp reaches an elevation of 500 metres (1,600 ft). The formation of the caldera was influenced by the neighbouring Pedernales-Arizaro fault.
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The caldera is the source of the Salar Grande ignimbrite, as well as the San Andrés ignimbrite that overlies the former. The
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erupted by Salar Grande crop out mainly east of the caldera. They are yellow, white and gray and embedded within
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95:. The region lies at an elevation of 3,500 metres (11,500 ft) and largely unknown to people.
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213:"Oligo-Holocene evolution of the southern part of the Central Andes: volcanism and tectonic"
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José Antonio
Naranjo, Víctor Villa, Cristián Ramírez and Carlos Pérez de Arce.
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The region originally contained various rocks with ages ranging from
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Ramírez, Cristián; Naranjo, José A.; Suárez, Marco (October 2015).
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131:. Ages range from 12.07 ± 0.6 - 9.8 ± 0.8 million years ago.
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The Salar Grande caldera is located close to the border with
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295:: XIV Chilean Geological Congress. Archived from
273:(in Spanish). 14th Chilean Geological Congress.
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339:. You can help Knowledge by
79:was active and gave rise to
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77:Central Volcanic Zone
71:. Starting with the
104:Salar de Pedernales
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302:on 10 January 2017
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386:Calderas of Chile
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118:basaltic andesite
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37:26.000°S 68.667°W
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16:Caldera in Chile
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50:Salar Grande
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333:volcanology
288:SERNAGEOMIN
270:SERNAGEOMIN
221:SERNAGEOMIN
111:ignimbrites
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380:Categories
196:Villa 2015
166:Villa 2015
135:References
85:lava domes
306:24 August
100:Argentina
73:Oligocene
237:cite web
122:andesite
81:calderas
69:Triassic
253:Sources
115:Miocene
54:caldera
28:68°40′W
25:26°00′S
126:dacite
75:, the
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