Milbanke Sound Group

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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 52.5°N
  • 128.73°W

  • 335 m
    1099 ft

  • 320120
  • Latitude
  • Longitude

  • Summit

  • Volcano

The Global Volcanism Program has no activity reports for Milbanke Sound Group.

The Global Volcanism Program has no Weekly Reports available for Milbanke Sound Group.

The Global Volcanism Program has no Bulletin Reports available for Milbanke Sound Group.

Basic Data

Volcano Number

Last Known Eruption



Unknown - Evidence Credible

335 m / 1099 ft


Volcano Types

Pyroclastic cone(s)

Rock Types

Basalt / Picro-Basalt

Tectonic Setting

Continental crust (> 25 km)


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

Geological Summary

Swindle, Lake, and Lady Douglas Islands in the Milbanke Sound area of the Fiord Ranges in west-central British Columbia contain cinder cones of Holocene age. Kitasu Hill on the western side of Swindle Island is a young basaltic cone that produced lava flows that extend to the north. Other postglacial vents identified by Dolmage (1921, 1924) are correlated by lithology only and may be as old as Tertiary (Baer, 1973; Holland, 1976). Basaltic tuff breccias on Lake Island and Lady Douglas Island originated from Helmet Peak on Lady Island. Basaltic lava flows from Price and Dufferin Islands overlie adjacent beach deposits (Souther; in Wood and Kienle, 1990).


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

Baer A J, 1973. Bella Coola-Laredo Sound map areas, British Columbia. Geol Surv Can Mem, 372: 1-122.

Dolmage V, 1921. Coast and islands of British Columbia between Burke and Douglas Channels. Geol Surv Can Summary Rpt, no 29.

Dolmage V, 1924. Post-Pleistocene volcanics of the British Columbia coast. J Geol, 32: 36-48.

Hickson C J, Edwards B R, 2001. Volcanoes and Volcanic Hazards in Canada. In; Brooks G R (ed) {A Synthesis of Geological Hazards in Canada}, Geol Surv Can Bull, 548: 1-248.

Hickson C J, Soos A, Wright R, 1994. Catalogue of Canadian volcanoes. Geol Surv Canada Open-File Rpt.

Holland S S, 1976. Landforms of British Columbia, a physiographic outline. Brit Columbia Dept Mines Petrol Resour Bull, 48: 1-138 (2nd printing).

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

Souther J G, 1966. Cordilleran volcanic study. Geol Surv Can Pap, 66-1: 87-89.

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

The Global Volcanism Program is not aware of any Holocene eruptions from Milbanke Sound Group. If this volcano has had large eruptions (VEI >= 4) prior to 10,000 years ago, information might be found on the Milbanke Sound Group 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.


Feature Name Feature Type Elevation Latitude Longitude
Duffrin Island Cone 50 m 52° 13' 0" N 128° 19' 0" W
Helmet Peak Cone 335 m 52° 21' 0" N 128° 21' 0" W
Katasu Hill Cone 250 m 52° 30' 0" N 128° 44' 0" W
Price Island Cone 40 m 52° 26' 0" N 128° 4' 0" W

Photo Gallery

Milbanke Sound lies in the center of this NASA Space Shuttle image (with north to the upper right). Swindle, Lake, and Lady Douglas Islands in the Milbanke Sound area of the Fiord Ranges in west-central British Columbia contain cinder cones of Holocene age. The most prominent feature is Kitasu Hill, a 180-m-high cinder cone on western Swindle Island. Basaltic tuff breccias occur on Lake Island and Lady Douglas Island, and lava flows from 20-km-long Price Island overlie adjacent beach deposits.

NASA Space Shuttle image ISS002-725-16, 2001 (

Smithsonian Sample Collections Database

There are no samples for Milbanke Sound Group in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.

Affiliated Sites

Large Eruptions of Milbanke Sound Group 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).
MODVOLC - HIGP MODIS Thermal Alert System Using infrared satellite Moderate Resolution Imaging Spectroradiometer (MODIS) data, scientists at the Hawai'i Institute of Geophysics and Planetology, University of Hawai'i, developed an automated system called MODVOLC to map thermal hot-spots in near real time. For each MODIS image, the algorithm automatically scans each 1 km pixel within it to check for high-temperature hot-spots. When one is found the date, time, location, and intensity are recorded. MODIS looks at every square km of the Earth every 48 hours, once during the day and once during the night, and the presence of two MODIS sensors in space allows at least four hot-spot observations every two days. Each day updated global maps are compiled to display the locations of all hot spots detected in the previous 24 hours. There is a drop-down list with volcano names which allow users to 'zoom-in' and examine the distribution of hot-spots at a variety of spatial scales.
MIROVA Middle InfraRed Observation of Volcanic Activity (MIROVA) is a near real time volcanic hot-spot detection system based on the analysis of MODIS (Moderate Resolution Imaging Spectroradiometer) data. In particular, MIROVA uses the Middle InfraRed Radiation (MIR), measured over target volcanoes, in order to detect, locate and measure the heat radiation sourced from volcanic activity.