| Abstract/Description or Keywords |
We generally associate slope failures with steep, mountainous areas. Flat to rolling, subdued terrain is thought of as having a relatively low risk of landslide occurrence. This is not always the case. Sometime, between mid-December, 1993 and early January, 1994, approximately 23 hectares of glaciomarine sediments (sediments of glacial origin deposited in the sea) flowed and slid rapidly into Mink Creek, near Terrace, BC. Spoil from the earthflow crater filled the incised channel of Mink Creek, extending downstream approximately one kilometer. The debris dammed the creek, raise the water level by 10meters and backed water upstrem 1200 meters. cause; high stream flow; deglaciation; sensitive marine sediments; Kitsumkalum-Kitimat Trough; clay; fishbowl; slip-surfaces; post-failure erosion; regional significance; management implications; research |
