Savo

Photo of this volcano
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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 9.13°S
  • 159.82°E

  • 485 m
    1591 ft

  • 255070
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Savo.

The Global Volcanism Program has no Weekly Reports available for Savo.

The Global Volcanism Program has no Bulletin Reports available for Savo.

The 6 x 7 km island of Savo consists of a forested andesitic-to-dacitic stratovolcano with a shallow, elliptical 1 x 1.5 km wide summit crater. Lava domes of historical age are located on the crater floor and its NE rim, and older domes occur on the flanks of the volcano. Pyroclastic flows and mudflows traveled down valleys from the summit crater to form debris fans along the coast. Thermal areas located in the summit crater, the south to SE flanks, and offshore include areas of steaming ground, fumaroles, small geysers, and hot springs. Spanish explorers arrived in 1568 during the first historical eruption of Savo. Pyroclastic flows during the climactic phase killed almost all inhabitants of the island, and oral traditions also note the expansion of the island on the northern side. Other eruptive episodes occurred during the mid-17th century and during the 1830s to 1840s.

Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
[ 1865 ± 20 years ] [ Unknown ] Uncertain    
1835 ± 5 years 1847 (?) Confirmed 3 Historical Observations
1650 ± 20 years Unknown Confirmed   Radiocarbon (corrected)
1568 (in or before) Unknown Confirmed 3 Historical Observations NE crater margin

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.


Synonyms

Sesarga

Craters

Feature Name Feature Type Elevation Latitude Longitude
Bitivogala Crater

Thermal

Feature Name Feature Type Elevation Latitude Longitude
Reoka Thermal 280 m 9° 9' 0" S 159° 49' 0" E
Tavoka Thermal 200 m 9° 9' 0" S 159° 49' 0" E
Voghala Thermal 280 m 9° 8' 0" S 159° 48' 30" E
Vutusuala Thermal
The broad irregular profile of the 6 x 7 km island of Savo is seen from an approaching boat. This forested stratovolcano has been the source of major historical eruptions, which included pyroclastic flows that devastated much of the island. The summit contains a 1 x 1.5 km wide crater. Lava domes are located on its floor, NE rim, and on the outer flank of the volcano. Thermal areas located in the summit crater, along the flanks of the volcano and offshore include fumaroles and small geysers.

Photo by Nick Varley (University of Colima).

The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography. 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.

Fisher N H, 1957. Melanesia. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 5: 1-105.

Grover J C, 1958. The Solomon Islands--geological exploration and research 1953-1956. Geol Surv Brit Solomon Is Mem, 2: 1-150.

Petterson M, Cronin S, Taylor P, Tolia D, Papabatu A, Toba T, Qopoto C, 2003. The eruptive history and volcanic hazards of Savo, Solomon Islands. Bull Volc, 65: 165-181.

Volcano Types

Stratovolcano
Lava dome(s)

Tectonic Setting

Subduction zone
Crustal thickness unknown

Rock Types

Major
Andesite / Basaltic Andesite
Dacite
Minor
Basalt / Picro-Basalt

Population

Within 5 km
Within 10 km
Within 30 km
Within 100 km
3,200
3,200
6,251
174,571

Affiliated Databases

Large Eruptions of Savo Information about large Quaternary eruptions (VEI >= 4) is cataloged in the Large Magnitude Explosive Volcanic Eruptions (LaMEVE) database of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).
WOVOdat WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore.
EarthChem EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility Integrated Earth Data Applications (IEDA). IEDA is a collaborative effort of EarthChem and the Marine Geoscience Data System (MGDS).
Smithsonian Collections Search the Smithsonian's NMNH Department of Mineral Sciences collections database. Go to the "Search Rocks and Ores" tab and use the Volcano Name drop-down to find samples.