Cayley Volcanic Field

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  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 50.12°N
  • 123.28°W

  • 2375 m
    7790 ft

  • 320811
  • Latitude
  • Longitude

  • Summit

  • Volcano

The Global Volcanism Program has no activity reports for Cayley Volcanic Field.

The Global Volcanism Program has no Weekly Reports available for Cayley Volcanic Field.

The Global Volcanism Program has no Bulletin Reports available for Cayley Volcanic Field.

Volcano Types

Volcanic field
Lava dome(s)

Tectonic Setting

Subduction zone
Continental crust (> 25 km)

Rock Types

Andesite / Basaltic Andesite

Geological Summary

The Mount Cayley volcanic field is a deeply dissected basaltic-andesite to rhyodacitic complex that covers a broad area between the Cheakamus and Squamish river valleys in the central Garibaldi volcanic belt. Mount Cayley itself was formed during at least three periods of activity primarily during the Pliocene and Pleistocene, but activity at satellitic dominantly subglacial vents along a N-S line north and south of Mount Cayley continued in the late Pleistocene and Holocene. Vents in the Cheakamus Valley formed a 22-km-long lava flow sequence prior to 50,000 years before present that was topped by esker-like flows of late Pleistocene age. The youngest lava flows from Pali Dome West and from the subglacial Slag Hill volcano north of Mount Cayley were not impounded by ice at low elevations, implying that they erupted after the end of the Fraser Glaciation (less than 10,000 years ago). Large volcanic landslides have occurred at heavily eroded Mount Cayley during the Holocene. At least five hot springs are present in valleys adjacent to the volcano, and shallow earthquakes have occurred in the vicinity of Mount Cayley.

The Global Volcanism Program is not aware of any Holocene eruptions from Cayley Volcanic Field. If this volcano has had large eruptions (VEI >= 4) prior to 10,000 years ago, information might be found on the Cayley Volcanic Field 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
Cayley, Mount Stratovolcano 50° 7' 13" N 123° 17' 22" W
Cheakamus Valley Vent 50° 12' 0" N 123° 10' 0" W
Fee, Mount Cone 2134 m 50° 5' 0" N 123° 14' 0" W
Little Ring Mountain Tuya 50° 16' 47" N 123° 18' 54" W
Ring Mountain
    Crucible Dome
Tuya 2210 m 50° 13' 20" N 123° 18' 14" W
Slag Hill Tuya Tuya 50° 12' 10" N 123° 16' 49" W
Tricouni SE Knob Tuya 49° 58' 20" N 123° 10' 30" W
Vulcan's Thumb Stratovolcano 2345 m 50° 7' 0" N 123° 17' 0" W


Feature Name Feature Type Elevation Latitude Longitude
Brew, Mt. Dome 50° 2' 20" N 123° 12' 15" W
Ember Ridge Dome 1981 m 50° 5' 0" N 123° 14' 0" W
Pali Dome East Dome 2130 m 50° 8' 8" N 123° 16' 9" W
Pali Dome West Dome 50° 8' 13" N 123° 18' 35" W
Slag Hill Dome 2135 m 50° 11' 23" N 123° 18' 25" W

The Global Volcanism Program has no photographs available for Cayley Volcanic Field.


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.

Geol Surv Canada, 2008-. Catalogue of Canadian volcanoes. Natural Resources Canada (

Green N L, 1981. Geology and petrology of Quaternary volcanic rocks, Garibaldi Lake area, southwestern British Columbia summary. Geol Soc Amer Bull, 92: 697-702.

Green N L, Armstrong R L, Harakal J E, Souther J G, Read P B, 1988. Eruptive history and K-Ar geochronology of the late Cenozoic Garibaldi volcanic belt, southwestern British Columbia. Geol Soc Amer Bull, 100: 563-579.

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.

Hildreth W E, 2007. Quaternary magmatism in the Cascades--geologic perpectives. U S Geol Surv Prof Pap, 1744: 1-125.

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

Souther J G, 1976. Geothermal potential of western Canada. In: {Proc 2nd United Nations Symp Devel Use Geotherm Resour, San Francisco}, Washington D C: U S Government Printing Office, 1: 259-267.

Souther J G, 1980. Geothermal reconnaissance in the central Garibaldi belt, British Columbia. Geol Surv Can Pap, 80-1A: 1-11.

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

Affiliated Databases

Large Eruptions of Cayley Volcanic Field 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.