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Escorial

Schichtvulkan 5447 m / 17,871 ft
Chile / Argentinien (Norden) + Bolivien, Südamerika, -25.08°S / -68.37°W
Aktueller Status: normal / ruhend (1 von 5)

Cerro Escorial volcano is a small andesitic-dacitic stratovolcano in northern Chile on the border with Argentina. The volcano contains a 1 km wide well-preserved summit crater of possible Holocene age. There are young-looking lava flows mostly towards the Chilean side, but they are probably more than 300,000 years old.
A large sulfur mine active until around 1978, La Casualidad or Mina Julia, is located 4 km SW of the volcano in an area of extensive hydrothermal alteration. A present, the volcano has warm springs (frozen at the surface), mud vents, and fumaroles, suggesting that the volcano is still active.

Interaktive Karte zeigen
Typische Tätigkeit: explosive
Ausbrüche: none in recent times

TimeMag. / TiefeEntfernungEpizenter
Fri, 5 Mar 2021 (GMT) (1 earthquake)
5. Mär. 2021 12:10 (GMT -3) (5 Mar 2021 15:10:10 GMT)
3.8

225 km - More
98 kmDepartamento de Los Andes, 239 km westlich von Salta, Departamento Capital, Salta, Argentinien
Wed, 3 Mar 2021 (GMT) (2 Erdbeben)
3. Mär. 2021 11:22 (GMT -3) (3 Mar 2021 14:22:15 GMT)
2.8

209 km - More
124 kmDepartamento de Los Andes, 224 km westlich von Salta, Departamento Capital, Salta, Argentinien
3. Mär. 2021 04:09 (GMT -3) (3 Mar 2021 07:09:07 GMT)
3.4

177 km - More
139 kmDepartamento de Los Andes, 193 km westlich von Salta, Departamento Capital, Salta, Argentina
Tue, 2 Mar 2021 (GMT) (2 Erdbeben)
2. Mär. 2021 20:36 (GMT -3) (2 Mar 2021 23:36:29 GMT)
3.0

177 km - More
132 kmDepartamento de Los Andes, 189 km westlich von Salta, Departamento Capital, Salta, Argentinien
02/03/2021 00:43:11 (2 Mar 2021 03:43:11 GMT)
2.8

215 km - More
132 kmDepartamento de Los Andes, 216 km westlich von Salta, Departamento Capital, Salta, Argentina

Beschreibung

Cerro Escorial is the youngest volcanic center of the NW-SE-trending Corrida de Cori range that marks the Chile/Argentina border.
A prominent ignimbrite sheet was erupted ca. 460,000 years ago from Cerro Escorial during a large explosive eruption. The pyroclastic flows who deposited the ignimbrite were generated by eruption column collapse and deposited only on the lower flanks all around the volcano, reaching up to 10 km distance from the vent. The ignimbrite covers approximately 105 sq km, with a maximum thickness of 6 m, and has a maximum total volume of 0.6 cubic km. Except where it is overlain by a few younger lava lobes in the SW, it is well exposed and forms a prominent stratigraphic marker horizon.
Very youthful-looking lava flows extend westward 3-4 km over the ignimbrite deposit on the Chilean side, but they, too, are relatively old compared to their aspect (ca. 340-320,000 years).
Most of the lava flows from Escorial extend to the SW into Chile, but a few small lobes traveled NE on the Argentinian side of the volcano.
The most recent feature seems to be the summit crater itself. Sattered andesitic lava blocks up to 50 cm in diameter can be found near the summit, and are ballistic blocks ejected during the most recent, possibly Holocene, explosions from the crater.
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Sources:
- Smithsonian / GVP volcano information
- Richards, J. P. and Villeneuve, M. (2002) "Characteristics of late Cenozoic volcanism along the Archibarca lineament from Cerro Llullaillaco to Corrida de Cori, northwest Argentina", J. Volcanology and Geothermal Research, v. 116 (3-4), pp. 161-200


See also: Sentinel hub | Landsat 8

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