Imuruk Lake

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  • United States
  • Alaska
  • Shield(s)
  • 300 CE
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 65.6°N
  • 163.92°W

  • 610 m
    2001 ft

  • 314060
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Imuruk Lake.

The Global Volcanism Program has no Weekly Reports available for Imuruk Lake.

The Global Volcanism Program has no Bulletin Reports available for Imuruk Lake.

The Oligocene-to-Holocene Imuruk monogenetic volcanic field in the central Seward Peninsula north of the Bendeleben Mountains contains around 75 small basaltic vents surrounded by voluminous lava flows. The largest and most recent vent is the Lost Jim cone, a 30-m-high cinder cone near Imuruk Lake that produced the only Holocene lava flow of the Imuruk field. The massive Lost Jim lava flow, erupted about 1655 years ago, extends 35 km west and 9 km north of the vent and covers about 230 sq km. The next youngest flow, the late-Pleistocene Camille lava flow, traveled 39 km from its vent.

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

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
0300 (?) Unknown Confirmed   Radiocarbon (uncorrected) Lost Jim Cone

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
Andromeda Cone Cone 346 m 65° 35' 0" N 163° 31' 0" W
Camille Cone Cone 418 m 65° 32' 0" N 163° 23' 0" W
Cassiope Cone Cone 398 m 65° 34' 0" N 163° 26' 0" W
Gosling Cone Cone 479 m 65° 28' 0" N 163° 15' 0" W
Lost Jim Cone 468 m 65° 29' 0" N 163° 17' 0" W
Rhododendron Cone Cone 376 m 65° 32' 0" N 163° 9' 0" W
Twin Calderas Shield volcano 610 m 65° 25' 0" N 163° 10' 0" W
The Imuruk Lake volcanic field derives it name from the lake near the center of this NASA Landsat image (with north to the top) of the central Seward Peninsula. The Oligocene-to-Holocene Imuruk monogenetic volcanic field contains around 75 small basaltic vents surrounded by voluminous lava flows. The gray-colored lava flow extending across the left-center portion of this image originated from the Lost Jim cone SW of Imuruk Lake and traveled 35 km to the west. The snow-covered Bendeleben Mountains lie at the bottom of the image.

NASA Landsat7 image (worldwind.arc.nasa.gov)
The Lost Jim lava flow extending to the right across this NASA Landsat image (with north to the top) originated from the Lost Jim cinder cone, SW of Imuruk Lake. The flow was erupted about 1655 years ago and is the only Holocene lava flow of the Imuruk Lake volcanic field. The small 30-m-high cone with a 30-m-wide crater produced a voluminous basaltic lava flow that traveled 35 km to the west and covered an area of about 230 sq km.

NASA Landsat7 image (worldwind.arc.nasa.gov)
Lava flows of the Imuruk Lake volcanic field are seen in this image taken with color infrared film. The Oligocene-to-Holocene Imuruk monogenetic volcanic field in the central Seward Peninsula north of the Bendeleben Mountains contains around 75 small basaltic vents surrounded by voluminous lava flows. The largest and most recent vent is the Lost Jim cone, a 30-m-high cinder cone near Imuruk Lake that produced the only Holocene lava flow of the Imuruk field.

Photo by K.G. Dean, 1980 (Alaska Volcano Observatory/University of Alaska Fairbanks, Geophysical Institute).

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..

Smith R L, Shaw H R, 1975. Igneous-related geothermal systems. U S Geol Surv Circ, 726: 58-83.

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

Volcano Types

Shield(s)
Cinder cone(s)
Lava dome(s)

Tectonic Setting

Intraplate
Continental crust (> 25 km)

Rock Types

Major
Basalt / Picro-Basalt

Population

Within 5 km
Within 10 km
Within 30 km
Within 100 km
0
0
0
0

Affiliated Databases

Large Eruptions of Imuruk Lake 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.