Preliminary stratigraphic and geotechnical investigations of the glaciolacustrine and loess deposits around the city of Whitehorse (NTS 105D/11), Yukon.
Description
This paper presents the preliminary results of a study investigating the stratigraphy and basic geotechnical properties of the surficial geology deposits observed in the bluffs around the city of Whitehorse. A total of eleven sections were examined on both the east and west banks of the Yukon River. Representative stratigraphic units were analysed for grain size distribution; deposits ranged in size from silt and clay to coarse gravel. Most of the observed sediments represent the glaciolacustrine depositional environment of Glacial Lake Laberge with the exception of a loess unit exposed near the top of the sections. Consistency indices of seven silt and clay-rich samples collected in the bluffs surrounding Whitehorse indicate a low plasticity comparable with other Canadian loess units and the glaciolacustrine bluffs around Kamloops and in the Elk Valley of British Columbia. The soil unconfined compressive strength was estimated using a pocket penetrometer and the dry silt and clay-rich units were found to have strength estimates up to two orders of magnitude greater than the sand-rich units.
Resources
| Name |
Format |
Description |
Link |
| Yukon Geological Survey publication metadata |
HTML |
|
https://data.geology.gov.yk.ca/Reference/43190 |
| Original metadata (https://open.yukon.ca) |
HTML |
|
https://open.yukon.ca/information/1a59752f-f8e8-4776-8447-8ae40a77c9be |
| Report |
PDF |
|
https://ygsftp.gov.yk.ca/publications/yeg/yeg10/YEG/04_Brideau_etal.pdf |