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TitleA rock topple-rock avalanche, near Goat Mountain, Cariboo Mountains, British Columbia, Canada
AuthorCouture, R; Evans, S G
SourceProceedings of the 9th Congress of the International Association for Engineering Geology and the Environment, papers; by van Rooy, J L (ed.); Jermy, C A (ed.); 2002, 7 pages
Alt SeriesEarth Sciences Sector, Contribution Series 2005107
PublisherInternational Association for Engineering Geology and the Environment
Meeting9th Congress of the International Association for Engineering Geology and the Environment; Durban; ZA; September 16-20, 2002
Documentcomputer file
MediaCD-ROM; digital
ProvinceBritish Columbia
AreaGoat Mountain; Cariboo Mountains
Lat/Long WENS-121.0000 -120.5000 53.5000 53.2500
Subjectssurficial geology/geomorphology; structural geology; Nature and Environment; landslides; slope failures; icefields; glaciers; discontinuities; sedimentary rocks; sandstones; arenites; mudstones; pelites; carbonates; bedding planes; fractures; crenulations; joints; glacial erosion; Goat Mountain Landslide; northern Cariboo Mountains fold belt; Late Proterozoic; Windermere Supergroup; Cariboo Group; Yankee Belle Formation; Cenozoic; Quaternary; Precambrian; Proterozoic
Illustrationslocation maps; cross-sections; stratigraphic columns; tables; sketch maps; stereonets; digital elevation models; orthophotos
ProgramClimate Change Action Fund (CCAF)
AbstractIn the summer of 1999, a rock avalanche (source volume ca. 180,000 m3) originated from high vertical cliffs surrounding an icefield near Goat Mountain in the Cariboo Mountains, 45 km northwest of McBride, British Columbia. Field examination of the source area indicated that the initial failure of the steep rock slope was by toppling. The rock mass subsequently disintegrated and flowed out onto the icefield surface. The run-out was 1200 meters over a total vertical distance of about 200 meters. This event is the first recorded large-scale catastrophic historic landslide to occur in the Pre-Cambrian rocks of the Cariboo Mountains. The Goat Mountain rock avalanche is one of 19 rock avalanches known to have originated in slopes above glaciers in British Columbia since 1899.

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