No latest activity reported for #volcano.name#.

Below is a summary of eruption dates and Volcanic Explosivity Indices (VEI).

The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title. Additional discussion of data sources can be found under Volcano Data Criteria.

Costa F, Singer B, 2002. Evolution of Holocene dacite and compositionally zoned magma, Volcan San Pedro, Southern Volcanic Zone, Chile. {J Petr}, 43: 1571-1593

Davidson J P, Ferguson K M, Colucci M T, Dungan M A, 1988. The origin and evolution of magmas from the San Pedro-Pellado volcanic complex, S. Chile: multicomponent sources and open system evolution. {Contr Mineral Petr}, 100: 429-445

Drake R E, 1976b. The chronology of Cenozoic igneous and tectonic events in the central Chilean Andes. {In}: Gonzalez-Ferran O (ed) {Proc Symp Andean & Antarctic Volcanology Problems (Santiago, Chile, Sept 1974)}, Rome: IAVCEI, p 670-697

Dungan M A, Wulff A, Thompson R, 2001. Eruptive stratigraphy of the Tatara-San Pedro complex, 36° S, Southern Volcanic Zone, Chilean Andes: reconstruction method and implications for magma evolution at long-lived arc volcanic centers. {J Petr}, 42: 555-626

Feeley T C, Dungan M A, Frey F A, 1998. Geochemical constraints on the origin of mafic and silicic magmas at Cordon el Guadal, Tatara-San Pedro complex, central Chile. {Contr Mineral Petr}, 131: 393-411

Ferguson K M, Dungan M A, Davidson J P, Colucci M T, 1992. The Tatara-San Pedro volcano, 36° S, Chile: a chemically variable, dominantly mafic magmatic system. {J Petr}, 33: 1-43

Gonzalez-Ferran O, 1995. {Volcanes de Chile}. Santiago: Instituto Geografico Militar, 635 p

Hildreth W, Moorbath S, 1988. Crustal contribution to arc magmatism in the Andes of central Chile. {Contr Mineral Petr}, 98: 455-489

IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. {IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior}.

Moreno H, 1974. Airplane flight over active volcanoes of central-south Chile. {Internatl Symp Volc Andean & Antarctic Volc Problems Guidebook}, Excur D-3, 56 p

Moreno H, Naranjo J A, 1991. The southern Andes volcanoes (33°-41° 30' S), Chile. {6th Geol Cong Chile, Excur PC-3}, 26 p

Singer B S, Thompson R A, Dungan M A, Feeley T C, Nelson S T, Pickens J C, Brown L L, Wulff A W, Davidson J P, Metzger J, 1997. Volcanism and erosion during the past 930 k.y. at the Tatara-San Pedro complex, Chilean Andes. {Geol Soc Amer Bull}, 109: 127-142

The San Pedro-Pellado volcanic complex (also known as San Pedro-Tatara) has been active from the Pliocene to the Holocene. The Tatara-San Pedro edifice overlies the deeply eroded Pellado stratovolcano; both were constructed within the 6 x 12 km Río Colorado caldera, which formed during an eruption about 0.5 million years ago. The Tatara basaltic-andesite shield volcano at the western end of the complex contains stacked sequences of up to 100 or more lava flows forming up to 1500 m of relief. The glacier-filled summit crater of the 3621-m-high dominantly andesitic San Pedro stratovolcano, which overlies the Tatara edifice, contains a young scoria cone that was the site of the most recent eruptions from the volcano. A major Holocene east-flank debris avalanche filled the Río de la Puente valley to the south and was followed by eruptions originating within the avalanche scarp low on the east flank that produced lava flows down the Estero Pellado drainage. No historical eruptions have been recorded, but fumaroles are found SE of Pellado.