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San Pedro volcano

stratovolcano 6145 m / 20,161 ft
Northern Chile, Bolivia and Argentina, South America, -21.88°S / -68.4°W
Current status: normal or dormant (1 out of 5) | Reports
San Pedro volcano books
Typical eruption style: explosive and effusive
San Pedro volcano eruptions: 1960(?), 1938, 1923(?), 1917(?), 1916(?), 1911, 1901, 1891(?), 1877(?), 1870(?)
TimeMag. / DepthDistanceLocation
Mon, 17 Dec
Mon, 17 Dec 03:05 UTCM 3.4 / 137 km7 kmANTOFAGASTA, CHILE
Sun, 16 Dec
Sun, 16 Dec 10:52 UTCM 3.5 / 119.4 km40 km80 km al N de Calama
Sun, 16 Dec 10:45 UTCM 3.3 / 147 km32 kmANTOFAGASTA, CHILE
Sat, 15 Dec
Sat, 15 Dec 04:06 UTCM 2.5 / 110 km20 km73 km al NE de Calama
Wed, 12 Dec
Wed, 12 Dec 22:28 UTCM 2.7 / 113.6 km15 km70 km al SO de Ollagüe
View all recent quakes
San Pedro volcano in the Atacama desert of northern Chile is one of the highest active volcanoes in the world.
San Pedro volcano is a twin volcano with 2 peaks, San Pedro (the western summit) and the older sister volcano San Pablo (6092 m) in the east.

A large debris avalanche, similar to the one at Mt St Helend in 1980, occurred at San Pedro in the past, and the present-day cone grew within the depression. The debris avalanche deposit is visible on the western lower slopes of San Pedro.
Thick dacitic lava flows with steep-sided fronts cover the upper slopes of San Pedro's cone which has a crater. There is a young-looking scoria cone on the western flank (La Poruña), which erupted an 8 km-long lava flow about 103,000 years ago.
Reports of varying degrees of reliability have recorded a number of eruptions in the past centuries.

Note: a volcano with the same name is at Lake Atitlán in the Guatemalan Highlands, forming the prominent group of San Pedro, Tolimán, and Atitlán volcanoes.

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