Helmet Peak, on Lake Island, is a steep-sided mound of volcanic material rising from sea level to an elevation of 335 m. It comprises a pile of welded (cemented together by heat) volcanic blocks and basalt feeder dikes. Basaltic tuff breccia (a rock made up of volcanic fragments) derived from Helmet Peak covers parts of Lake Island and adjacent Lady Douglas Island.
Helmet Peak | |
---|---|
Type of volcanic feature: | Monogenetic cinder cone |
Additional volcanic features: | |
Region: | British Columbia |
Volcanic belt: | Anahim volcanic belt |
Area: | Milbanke Sound Cones |
Latitude: | 52°21'16" N |
Longitude: | 128°21'1" W |
Age of last eruption: | Holocene (0-0.01 Ma) |
Summit elevation: | |
Base elevation: |