This GIS dataset depicts a geostatistical model of the thickness of sediment overlying bedrock in Alberta.
The sediment thickness surface was generated to assist the construction of a new geological framework for Alberta. The surface was derived by subtracting the bedrock topography of Alberta (Alberta Geological Survey Map 550) from the 60 m Shuttle Radar Topography Mission digital elevation model.
These data comprise the raster surface of Alberta Geological Survey Map 551, Thickness of Quaternary and Neogene Sediment in Alberta, Canada.
This dataset was derived by subtracting the computer-generated geostatistical model of the bedrock topography of Alberta from the 60 m grid-spaced Shuttle Radar Topography Mission (SRTM) digital elevation model of the present-day land surface.
Data used to construct the bedrock topography model were derived from a number of sources. These include stratigraphic picks made from oil and gas petrophysical logs, maintained by the Energy Resources Conservation Board, lithological picks made from water-well litholog records, obtained from Alberta Environment, and AGS digital dataset 2010-0037, Bedrock Topography of Alberta, Canada.