Nunivak Island

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  • United States
  • Alaska
  • Shield
  • Unknown - Undated Evidence
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 60.02°N
  • 166.33°W

  • 511 m
    1676 ft

  • 314020
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Nunivak Island.

The Global Volcanism Program has no Weekly Reports available for Nunivak Island.

The Global Volcanism Program has no Bulletin Reports available for Nunivak Island.

Nunivak Island contains about 60 cinder cones and four maars; the surface of the island consists dominantly of thin pahoehoe lava flows that form a carapace over Cretaceous sedimentary rocks. The 110-km-wide permafrost-covered island lies about 30 km off the coast of SW Alaska. The widespread, thin pahoehoe lava flows originate from small shield volcanoes and cover much of the island, which is dotted throughout by cinder cones and other vents. Two of the maars have about 200 m of relief, with floors near sea level. Eruptions occurred during 5 broad periods of activity that began 6.1 million years ago and continued into the Holocene. The bulk of the >427 cu km volcanic field was formed during two Pleistocene eruptive periods that ended about 300,000 years ago. The most recent eruptions at Nunivak produced a series of alkalic basalt lava flows and ash deposits from cinder cones and maars along an E-W zone in the southern part of the island.

The Global Volcanism Program is not aware of any Holocene eruptions from Nunivak Island. If this volcano has had large eruptions (VEI >= 4) prior to 10,000 years ago, information might be found on the Nunivak Island 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
Ahding Ingrid Mountain Cone 195 m 60° 8' 0" N 166° 35' 0" W
Ikathiwik Crater Cone - Crater 214 m 60° 14' 0" N 166° 15' 0" W
Indooli Mountain Cone 195 m 60° 3' 0" N 166° 38' 0" W
Ingri Butte Cone 145 m 60° 2' 0" N 167° 11' 0" W
Ingrijoak Hills Cone 145 m 60° 19' 0" N 166° 17' 0" W
Ingrilukat-Naskorat Hill Cone 286 m 60° 8' 0" N 166° 25' 0" W
Ingriruk Hill Cone 152 m 60° 5' 0" N 167° 13' 0" W
Jiskooksnuk Hill Cone 153 m 60° 6' 0" N 166° 56' 0" W
Kikdooli Butte Cone 225 m 60° 3' 0" N 166° 43' 0" W
Kikikyak Hill Cone 233 m 60° 9' 0" N 166° 32' 0" W
Kimijooksuk Butte Cone 223 m 60° 11' 0" N 166° 11' 0" W
Kimiksthek Hill Cone 187 m 60° 6' 0" N 167° 2' 0" W
Kimikthak Hills Cone 62 m 60° 21' 0" N 166° 10' 0" W
Kiolik Hill Cone 130 m 60° 17' 0" N 166° 30' 0" W
Roberts Mountain Cone 511 m 60° 1' 0" N 166° 17' 0" W
Seemalik Butte Cone 264 m 60° 9' 0" N 167° 8' 0" W
Twin Mountain Cone 191 m 60° 2' 0" N 165° 43' 0" W

Craters

Feature Name Feature Type Elevation Latitude Longitude
Ahkiwiksnuk Maar 60° 2' 0" N 166° 11' 0" W
Binalik Maar 60° 2' 0" N 166° 12' 0" W
Nanwaksjiak Maar 60° 2' 0" N 166° 5' 0" W
Low-angle sun accentuates small pyroclastic cones on snow-covered Nunivak Island. Shelf ice modifies the apparent northern coastline (top) in this January 1992 Space Shuttle image. The 110-km-wide island lies about 30 km off the coast of SW Alaska and contains about 60 cinder cones and four maars. Although the bulk of the volcanic field was formed during two Pleistocene eruptive periods ending about 300,000 years ago, activity continued into the Holocene. The latest eruptions occurred along an E-W line in the southern part of the island.

NASA Space Shuttle image STS42-82-33, 1992 (http://eol.jsc.nasa.gov/).

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.

Hoare J M, Condon W H, Cox A, Dalrymple G B, 1968. Geology, paleomagnetism and potassium-argon ages of basalts [Nunivak Island]. Geol Soc Amer Mem, 116: 377-414.

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

Smith R L, Shaw H R, Luedke R G, Russell S L, 1978. Comprehensive tables giving physical data and thermal energy estimates for young igneous systems of the United States. U S Geol Surv Open-File Rpt, 78-925: 1-25.

Wood C A, Kienle J (eds), 1990. Volcanoes of North America. Cambridge, England: Cambridge Univ Press, 354 p.

Volcano Types

Shield
Pyroclastic cone(s)
Maar(s)

Tectonic Setting

Intraplate
Continental crust (> 25 km)

Rock Types

Major
Basalt / Picro-Basalt
Trachybasalt / Tephrite Basanite

Population

Within 5 km
Within 10 km
Within 30 km
Within 100 km
0
0
0
1,078

Affiliated Databases

Large Eruptions of Nunivak Island 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.