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TitleSurficial geology, Loretta Island, Douglas Channel area, British Columbia, parts of NTS 103-H/10 and 15
DownloadDownloads
AuthorWeiland, I C; Maynard, D E; Blais-Stevens, A; Geertsema, M
SourceGeological Survey of Canada, Canadian Geoscience Map 305, 2017, 1 sheet, https://doi.org/10.4095/300246
Year2017
PublisherNatural Resources Canada
EditionPrelim.
Documentserial
Lang.English
Maps1 map
Map Info.surficial geology, surficial deposits terrain stability, 1:25,000
ProjectionUniversal Transverse Mercator Projection, zone 9U (NAD83)
Mediaon-line; digital
RelatedFor all publications in this survey, see the following publications
File formatreadme
File formatpdf (Adobe® Reader®); rtf; xlsx (Microsoft® Excel® 2010); gdb (ESRI® ArcGIS(TM) v.10.x); shp (ESRI® ArcGIS(TM) v.10.x); xml (ESRI® ArcGIS(TM) v.10.x); mxd (ESRI® ArcGIS(TM) v.10.x)
ProvinceBritish Columbia
NTS103H/10; 103H/15
AreaDouglas Channel; Loretta Island; Devastation Channel; Loretta Channel; Sue Channel; Maitland Island; Hawkesbury Island; Hugh Creek
Lat/Long WENS-128.9236 -128.6583 53.8000 53.6750
Subjectssurficial geology/geomorphology; landslides; landslide deposits; debris flows; sediment transport; slope stability; slope failures; postglacial deposits; organic deposits; fens; bogs; wetlands; peat; colluvial deposits; fans; talus; mass wasting; slopewash deposits; alluvial deposits; alluvial fans; glacial deposits; glacial features; glacial landforms; glaciomarine deposits; proglacial deposits; deltaic deposits; meltwater channels; scarps; tills; glaciofluvial deposits; sands; gravels; clays; silts; weathering; depositional environment; glacial history; glaciation; Wisconsinian glacial stage; deglaciation; coastal environment; coastal erosion; planning; Fraser Glaciation; geological hazards; terrain stability mapping; risk assessment; folic organic material; debris slides; diamicton; debris avalanches; debris floods; snow avalanches; rock falls; rock slides; submarine gravity flows; landslide tracks; Phanerozoic; Cenozoic; Quaternary
Illustrationslocation maps; index maps; geoscientific sketch maps; tables; photographs
ProgramMarine Geohazards, Public Safety Geoscience
Image
Released2017 07 19
AbstractDouglas Channel is a 100 km long fjord located south of the municipality of Kitimat, in northwest British Columbia. The Loretta Island map area covers Loretta Island and the northern tips of Maitland and Hawkesbury Islands within Douglas Channel where it meets Sue Channel, Loretta Channel, and Devastation Channel. The distance from Sue Channel through Loretta Channel to Douglas Channel is about 15 km. Mapping of surficial sediments, compilation of landslide deposits, and preliminary interpretation of bedrock types up to height of land were primarily carried out using British Columbia airphotos dated from 2001, 2003, and 2007 ranging in scales from 1:15 000 to 1:25 000. Older, field-based mapping by the authors in some isolated parts of the study area was incorporated into this mapping, complemented with additional, reconnaissance-level field observation in 2015 and 2016.
Summary(Plain Language Summary, not published)
This is one of six surficial geology an d landslide inventory maps that cover Douglas Channel. Douglas Channel is a 100-km long fjord located south of the municipality of Kitimat, in NW British Columbia. The purpose is to provide baseline geoscience information on surface sediments and landslide hazard to decision-makers.
GEOSCAN ID300246