Preliminary stratigraphic and geotechnical investigations of the glaciolacustrine and loess deposits around the city of Whitehorse (NTS 105D/11), Yukon.

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.

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Dernière modification avril 17, 2026, 17:52 (TU)
Créé le avril 17, 2026, 17:52 (TU)
contact_email eservices@gov.yk.ca
contact_person {"en": "Yukon Geological Survey", "fr": "Yukon Geological Survey"}
criticality_level []
data_dictionary []
geographic_scope []
open_canada_collection federated
open_canada_date_published 2011-04-04 00:00:00
open_canada_keywords {"en": ["stratigraphy", "ygs-import", "ygs-import-20250711", "ygs-publications", "yukon-geological-survey"], "fr-t-en": ["stratigraphie", "importation d'ygs", "ygs-import-20250711", "publications de l'YGS", "enquête géologique du yukon"]}
open_canada_subject ["science_and_technology"]
sensitivity_level unrestricted
title_fr
update_frequency unknown