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DIG 2016-0039

Bedrock Topography of Alberta (gridded data, ASCII format)

Abstract: The bedrock topography of Alberta is the surface of the top of Upper Cretaceous and Paleogene bedrock, and reveals geomorphic features created by Paleogene to Recent river systems and Quaternary glaciation. This grid is a computer-generated geostatistical model of the bedrock topography of Alberta using previously published information from Alberta Geological Survey (AGS) maps and reports, as well as new data. The quality of this data has been assessed and then a quality-weighting approach was applied to the dataset prior to interpolation. The surface was modelled using a 500m x 500m grid cell spacing, and as such should not be used for local scale studies. This grid represents the surface portrayed in AGS Map 602, Bedrock Topography of Alberta, and this grid will continue to be updated as part of the Alberta Geological Framework project. Explanatory notes, references, and data sources appear on a supplementary page to accompany Map 602. These notes describe the distribution of physiographic terrain elements of the bedrock surface across Alberta, and the data sources and geostatistical methods used to interpolate this surface. Place Keywords 72e 72l 72m 73d 73e 73l 73m 74d 74e 74l 74m 82h 82i 82j 82o 82p 83a 83b 83c 83e 83f 83g 83h 83i 83j 83k 83l 83m 83n 83o 83p 84a 84b 84c 84d 84e 84f 84g 84h 84i 84j 84k 84l 84m 84n 84o 84p alberta canada Theme Keywords bedrock; bedrock topography; buried valleys; geology; gis data; numerical modelling; preglacial drainage; preglacial topography; structural; subsurface; thalwegs

MacCormack, K.E.  Lyster, S.  Atkinson, N.  2016-06-10