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The Vulcan's Thumb is a rock pinnacle in the Pacific Ranges of southwestern British Columbia, Canada. It is the largest of a number of slender pinnacles protruding from the sharp summit ridge of Pyroclastic Peak, which forms part of the Mount Cayley massif.[1]
Three eruptive stages built the Mount Cayley massif, the second of which is named after the Vulcan's Thumb.[1]
- ^ a b Kelman, M. C., Russell, J. K., Hickson, C. J. (2001). "Preliminary petrography and chemistry of the Mount Cayley volcanic field, British Columbia", Current Research Part A, Geological Survey of Canada Paper 2001-A11, pp. 4, 5.
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