Title Surficial geology, Gunnell Creek, British Columbia
Author Smith, I.R.
Source Open-File Report - Geological Survey of Canada, No.5305 1 disc. Publisher: Geological Survey of Canada, Calgary, AB, Canada
Publication Date 2009
Notes In English. Accessed on Aug. 12, 2011 GeoRef Acc. No: 309759
Index Terms alluvium; glacial geology; maps; Quaternary deposits; sediments; Canada-- British Columbia; British Columbia; Canada; Cenozoic; clastic sediments; eolian features; glacial features; glacial geology maps; Gunnell Creek; moraines; Quaternary; surficial geology; till; Western Canada
Abstract The Gunnell Creek (NTS 94I/13) map sheet was inundated by the Laurentide Ice Sheet during the late Wisconsinan glaciation (ca. 25000-10000 years ago). A thick blanket of clay and fine-silt-rich till was deposited by westward flowing ice across the region. Observations of large shear structures in till (some demarcated by intra-till winnowed sand and gravel lenses and larger bodies), and prevalent clast pavements (including three distinct clast pavements in a single 10 m vertical section) suggest till in this area underwent extensive deformation, thrusting and stacking. This likely accounts for the considerable thicknesses of till (3-10 m) seen here and elsewhere in the region.
URL http://apps1.gdr.nrcan.gc.ca/mirage/mirage_list_e.php?id=247298
Publication Type map
Record ID 65006353