Vulcan's Thumb

Vulcan's Thumb
Elevation	2,290 m (7,513 ft)
Location
Location	British Columbia, Canada
Range	Pacific Ranges
Coordinates	50°07′N 123°17′W / 50.11°N 123.29°W / 50.11; -123.29
Topo map	NTS 92J/03
Geology
Type	Stratovolcano
Age of rock	Pleistocene
Volcanic arc/belt	Canadian Cascade Arc Garibaldi Volcanic Belt
Last eruption	Pleistocene
Climbing
First ascent	None

Vulcan's Thumb is a deeply dissected, unstable stratovolcano^[1] located directly on the southern ridge of Pyroclastic Peak. It is one of the five main volcanic peaks of the Mount Cayley massif and remains unclimbed because of technical difficulties and its loose rock. Vulcan's Thumb is believed to have last erupted during the Pleistocene period.^[1]

The creation of Vulcan's Thumb consist of vent breccia, massive lava flows, and agglutinated breccia of plagioclase, hypersthene, hornblende, biotite, phyric dacite deposited as part of an edifice that raised upon the southwestern edge of the ancestral Mount Cayley.

See also

• Cascade Volcanoes
• Garibaldi Volcanic Belt
• List of volcanoes in Canada
• Volcanism of Canada
• Volcanism of Western Canada
• Mount Cayley

References

v t e Pacific Ranges Ranges Bendor Britannia Bunster Cadwallader Calliope Camelsfoot Cantilever Caren Chilcotin Colville Conical Douglas Earle Edwards Fannin Fitzsimmons Franklyn Fraser Garibaldi Gastineau Georgina Koeye Lewis Lillooet Namu Nicholl Niut North Shore Pantheon Pembroke Sir Harry Tantalus Tottenham Unwin Waddington Wharncliffe Whitemantle Mountains Akasik Alfred Alice Arthur Asperity Birkenhead Bishop Black Tusk Blackcomb Blanshard Brandywine Breakenridge Brew Brew Burke Callaghan Capricorn Castle Towers Cauldron Cayley Cinder Cone Clarke Coquitlam Crevasse Crag Crickmer Crown Currie Cypress Devastator Dewdney Eagle Edge Elsay Fang Fee Fitzgerald Forefinger Frederick William Fromme Garibaldi Good Hope Grouse Helena Job Judge Howay Kinch Little Finger Little Ring Luna Mamquam Meager Merlon Middle Finger Monarch Monmouth Munday Nicomen One Eye Opal Cone Overill Pali Petlushkwohap Plinth Powder Price Pylon Pyroclastic Queen Bess Raleigh Red Tusk Ring Robie Reid Round Serratus Seymour Silverthrone Skihist Stein Somolenko Spearhead Table Tantalus Taseko Tatlow Tiedemann Tricouni Tuber Vic Victoria Vulcan's Thumb Waddington Wedge Wellington Passes Cayoosh Griswold McGillivray Pemberton Railroad Tyoax Wedge Glaciers Compton Névé Diamond Garibaldi Névé Ha-Iltzuk Homathko Klinaklini Mamquam Monarch Pashleth Powder Mountain Silverthrone Spearhead Communities List of communities in British Columbia Parks Clendinning Duffey Lake Garibaldi Mount Elphinstone Stein Valley Nlaka'pamux Heritage Spruce Lake (South Chilcotin) Upper Lillooet Golden Ears Tantalus Mehatl Creek Birkenhead Lake Joffre Lakes Ts'il?os Bishop River Princess Louisa Marine Callaghan Nairn Falls Brandywine Falls Alice Lake Blackcomb Glacier Tetrahedron Stawamus Chief Murrin Mount Seymour Cypress Indian Arm Pinecone-Burke Shannon Falls Rolley Lake Sasquatch Big Creek Homathko Estuary Davis Lake

v t e Volcanoes of the Garibaldi Volcanic Belt Black Tusk Brew Bridge River Tuber Salal Glacier Sham Callaghan Cauldron Cayley Pyroclastic Vulcan's Thumb Cinder Cone Ember Fee Franklin Glacier Garibaldi Atwell Opal Glacier Pikes Little Ring Meager Bridge River Capricorn Devastator Job Perkin's Pillar Plinth Pylon Monmouth Creek The Castle Pali Price Clinker Ring Round Silverthrone Silverthrone Machmell River Slag The Table Tricouni Southwest Watts Point See also Volcanism of Canada portal