Ta'u

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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 14.23°S
  • 169.454°W

  • 931 m
    3054 ft

  • 244001
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Ta'u.

The Global Volcanism Program has no Weekly Reports available for Ta'u.

The Global Volcanism Program has no Bulletin Reports available for Ta'u.

The rectangular, 6 x 10 km Ta'u Island, located at the eastern end of the Samoan islands, is ringed by sea cliffs. The 931-m-high island is the emergent portion of the large Lata shield volcano. Collapse and landsliding of the southern portion of the basaltic shield volcano have left an arcuate, south-facing embayment with a steep headwall overlooking several flat benches. Two smaller shields were constructed along two rift zones at the NW and NE tips of the island. The NW corner of the island is extended by a tuff-cone complex that draped sea cliffs and ejected large dunite xenoliths and coral blocks. Numerous Holocene post-caldera cones occur at the summit and flanks of the Lata shield volcano.

The Global Volcanism Program is not aware of any Holocene eruptions from Ta'u. If this volcano has had large eruptions (VEI >= 4) prior to 10,000 years ago, information might be found on the Ta'u page in the LaMEVE (Large Magnitude Explosive Volcanic Eruptions) database, a part of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).

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.


Cones

Feature Name Feature Type Elevation Latitude Longitude
Fa'asemene Tuff cone 14° 13' 1" S 169° 30' 29" W
Faleasao Tuff cone 14° 13' 0" S 169° 30' 43" W
Lepu'e Cone 14° 13' 19" S 169° 29' 10" W
Luatele Shield volcano 14° 13' 37" S 169° 25' 59" W
Maluatia Cone
Olomanu Cone 14° 14' 0" S 169° 29' 6" W
Olomatimu Cone 14° 13' 55" S 169° 28' 26" W
Olotania Cone 14° 14' 13" S 169° 28' 0" W
Sa'umane Cone 14° 13' 16" S 164° 26' 0" W
To'a Tuff cone 14° 12' 47" S 169° 30' 18" W
Tunoa Shield volcano 14° 14' 0" S 169° 30' 0" W

Craters

Feature Name Feature Type Elevation Latitude Longitude
Lata Pleistocene caldera 14° 15' 0" S 169° 27' 7" W
Lualaititi Pit crater 14° 13' 30" S 169° 26' 0" W
Steep wave-washed sea cliffs ring the rectangular, 6 x 10 km Ta'u Island, located at the eastern end of the Samoan islands. The 931-m-high island is the exposed portion of the large Lata shield volcano. Collapse and landsliding of the southern portion of the basaltic shield volcano have left an arcuate, south-facing embayment (bottom) with a steep headwall. A tuff-cone complex is partially visible at the extreme NW tip of the island (top). The historic village of Fitiiuta lies at the NE tip of the island (far right).

NASA Space Shuttle image ISS002-E-9892, 2001 (http://eol.jsc.nasa.gov/).
Sheer, forested cliffs form the southern side of Ta'u Island. Collapse of the massive shield volcano formed a large arcuate depression open to the south. The rectangular, 6 x 10 km Ta'u Island, located at the eastern end of the Samoan Islands, is the emergent portion of the large Lata shield volcano. Numerous Holocene post-caldera cones occur at the summit and flanks of the Lata shield volcano.

Photo by John Brooks, 1992 (U. S. National Park Service).

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.

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

Stearns H T, 1944. Geology of the Samoan Islands. Geol Soc Amer Bull, 55: 1279-1332.

Stice G D, 1968. Petrology of the Manu'a Islands, Samoa. Contr Mineral Petr, 19: 343-357.

Stice G D, McCoy F W, 1968. The geology of the Manu'a Islands, Samoa. Pacific Sci, 22: 427-457.

Volcano Types

Shield
Caldera
Pyroclastic cone(s)

Tectonic Setting

Subduction zone
Oceanic crust (< 15 km)

Rock Types

Major
Basalt / Picro-Basalt
Trachybasalt / Tephrite Basanite

Population

Within 5 km
Within 10 km
Within 30 km
Within 100 km
95
1,154
1,538
1,538

Affiliated Databases

Large Eruptions of Ta'u 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.