{{Infobox rockunit | name = Pakowki Formation | image = | imagesize = | caption = | type = Geological formation | period = Campanian | age = {{Fossil range|Campanian|Campanian|Campanian}} | prilithology = Shale | otherlithology = Siltstone, sandstone | namedfor = Pakowki Lake | namedby = D.B. Dowling, 1916 | region = WCSB | country = Canada | coordinates = {{coord|49.19251|-111.06669|display=inline,title|name= Pakowki Formation}} | unitof = | subunits = | underlies = Foremost Formation, Judith River Formation | overlies = Milk River Formation | thickness = up to {{convert|200|m|ft|-1}}<ref name=lexicon/> | extent = | area = | map = | map_caption = }}
The '''Pakowki Formation''' is a stratigraphic unit of Campanian age in the Western Canadian Sedimentary Basin.
It takes the name from Pakowki Lake, and was first described in outcrop along the Pakowki Coulee by D.B. Dowling in 1916.<ref>Dowling, D.B., 1916. Water Supply, Southeastern Alberta (Contains Geological Map 1604); Geological Survey of Canada, Summary Report 1915, pp. 102-110.</ref>
==Lithology== The Formation is composed of grey mudstone. <ref name=lexicon> {{Cite web|url=http://cgkn1.cgkn.net/weblex/weblex_litho_detail_e.pl?00053:011476 |title= Pakowki Formation |author=Lexicon of Canadian Geologic Units |accessdate=2010-01-01}} </ref> Olive siltstone and very fine grained sandstone can occur locally. A thin pebble conglomerate marks the base.
==Distribution== The Pakowki Formation reaches a maximum thickness of {{convert|200|m|ft|-1}} in central Saskatchewan.<ref name=lexicon/> It reaches into southern Alberta, thinning out as it progresses westwards towards the Canadian Rockies foothills.
==Relationship to other units==
The Pakowki Formation is abruptly overlain by the Milk River Formation and gradationally overlays the Judith River Formation or Foremost Formation.<ref name=lexicon/>
It is equivalent to the upper part of the Lea Park Formation in central Alberta. It is not differentiated from the Riding Mountain Formation to the east into eastern Saskatchewan and Manitoba.
==References== {{reflist}}
{{Western Canadian Sedimentary Basin|South AB=yes|Saskatchewan=yes}}
Category:Geologic formations of Alberta Category:Cretaceous Alberta Category:Western Canadian Sedimentary Basin Category:Shale formations of Canada Category:Siltstone formations of Canada Category:Sandstone formations of Canada