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There are no activity reports for Wolf.
Summary of eruption dates and Volcanic Explosivity Indices (VEI).
|Start Date||Stop Date||Eruption Certainty||VEI||Evidence||Activity Area or Unit|
|1982 Aug 28||1982 Sep 6 (?)||Confirmed||1||Historical Observations||Caldera and SE flank (875 m)|
|[ 1973 Oct 25 ]||[ 1973 Oct 29 ]||Uncertain|
|1963 Mar 4||1963 Mar 16 (in or after)||Confirmed||0||Historical Observations||SE flank (610 m)|
|1948 Jan 24||1948 Jan 31 (in or after)||Confirmed||2||Historical Observations||SE flank (1200 m)|
|1935 Feb||Unknown||Confirmed||Historical Observations|
|1925 Apr 11||1926 Mar 26 (in or after)||Confirmed||1||Historical Observations||ESE flank|
|1800 Aug 21||1800 Aug 21||Confirmed||2||Historical Observations|
|1797 Aug||Unknown||Confirmed||Historical Observations|
|1450 (after)||Unknown||Confirmed||0||Surface Exposure||Lower NE and SE flanks|
|0950 (after)||Unknown||Confirmed||0||Surface Exposure||Lower NE flank|
|0150 ± 1000 years||Unknown||Confirmed||0||Surface Exposure||Lower SW flank|
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.
Geist D J, Naumann T R, Standish J J, Kurz M D, Harpp K S, White W M, Fornari D J, 2005. Wolf volcano, Galapagos archipelago: melting and magmatic evolution at the margins of a mantle plume. J Petr, 46: 2197-2224.
IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior..
McBirney A R, Williams H, 1969. Geology and petrology of the Galapagos Islands. Geol Soc Amer Mem, 118: 1-197.
Naumann T, Geist D, 2000. Physical volcanology and structural development of Cerro Azul volcano, Isabela Island, Galapagos: implications for the development of Galapagos-type shield volcanoes.. Bull Volc, 61: 497-514.
Richards A F, 1962. Archipelago de Colon, Isla San Felix and Islas Juan Fernandez. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 14: 1-50.
Wolf, the highest volcano of the Galápagos Islands, straddles the equator at the north end of the archipelago's largest island, Isabela. The 1710-m-high Volcán Wolf has steeper slopes than most other Isabela volcanoes, reaching angles up to 35 degrees. A 6 x 7 km caldera, at 700 m one of the deepest of the Galápagos Islands, is located at the volcano's summit. A prominent bench on the west side of the caldera rises 450 above the caldera floor, much of which is covered by a lava flow erupted in 1982. Radial fissures concentrated along diffuse rift zones extend down the north, NW, and SE flanks, and submarine vents lie beyond the north and NW fissures. Similar unvegetated flows originating from a circumferential chain of spatter and scoria cones on the eastern caldera rim drape the forested flanks of the volcano to the sea. The proportion of aa lava flows at Volcán Wolf exceeds that of other Galápagos volcanoes. Wolf's 1797 eruption was the first documented historical eruption in the Galápagos Islands.