Whitemud Formation | |
---|---|
Stratigraphic range: | |
Type | Geological formation |
Unit of | Edmonton Group |
Underlies | Frenchman Formation and Battle Formation |
Overlies | Eastend Formation, Horseshoe Canyon Formation and St. Mary River Formation |
Thickness | Up to 23 metres (75 ft) |
Lithology | |
Primary | Sandstone, siltstone, clay |
Other | shale, lignite |
Location | |
Region | Saskatchewan Alberta |
Country | Canada |
Type section | |
Named by | N.B. Davis, 1918[1] |
The Whitemud Formation is a geologic formation of Late Cretaceous (Maastrichtian) age in the Western Canada Sedimentary Basin.[2] it is present through the plains of southern Saskatchewan, southeastern Alberta and south-central Alberta.[3] Named by N.B. Davis in 1918,[1] the formation is characterized by white kaolinitic clay and is a source of high-quality refractory clay.[1][4][5] The type locality has been designated as Dempster's clay pit northwest of Eastend, Saskatchewan.[6]
Although fossils are generally lacking in the Whitemud Formation, in southern Saskatchewan the Whitemud contains coprolites (fossilized feces) and fossilized intestines of fish.[7]
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