Description
The drift thickness map of the Peerless Lake area (NTS 84B) shows the variation in thickness of unconsolidated sediment lying between the bedrock surface and the present-day land surface, and complements the Drift Thickness of Alberta map (Pawlowicz and Fenton, 1995). The thickness of the drift varies from locally less than 2 metres in Buffalo Head Hills to over 200 metres in the Loon River Lowland in the central part of the map area. Thick drift fills the major paleovalleys, which are the Muskwa Valley, the Red Earth Valley and Gods Valley. The drift is thinnest on the Peerless Lake Upland, the Utikuma Uplands and the Buffalo Head Hills Upland. In general the areas of thin drift correspond to areas where the bedrock topography is high. Exceptions are the hills composed of thick drift, such as the ones located south of Muskwa Lake and southwest of Peerless Lake. These features are likely hill-hole pairs produced by glaciotectonism with lakes occupying the source depressions (holes). The drift also thickens in the southwestern part of the Utikuma Uplands. Experience from more detailed investigations in eastern Alberta have shown that unmapped, narrow, deep drift-filled channels are to be expected.
Updated
March 29, 2016
Tags
Title and Dataset Information
Alternative Title
Drift Thickness of Peerless Lake Area, Alberta (NTS 84B) (GIS data, line features)
Date Modified
2016-03-29
Update Frequency
Every 2 months
Publisher / Creator Information
Publisher
Alberta Energy Regulator
Subject Information
Start Date
2000-01-01
End Date
2002-01-01
Spatial Coverage
Resource Dates
Date Created
2005-03-01
Date Added to catalogue
2020-04-30T03:27:40.496638
Date Issued
2005-03-01
Date Modified
2016-03-29
Audience information
Language
Identifiers
Usage / Licence
Contact
Contact Name
Alberta Geological Survey