| 词条 | Stony Mountain Formation |
| 释义 |
| name = Stony Mountain Formation | image = | imagesize = | caption = | type = Geological formation | age = {{Fossil range|450|440|Ashgill}} | prilithology = Dolomite, shale | otherlithology = Anhydrite, limestone | namedfor = Stony Mountain, Manitoba | namedby = D.B. Dowling, 1900 | region = WCSB Williston Basin | country = {{flag|Canada}} {{flag|United States}} | coordinates = {{coord|49.9184|N|97.5265|W|display=inline,title|name= Stony Mountain Formation}} | unitof = | subunits = | underlies = Stonewall Formation | overlies = Red River Formation | thickness = up to {{convert|45|m|ft|-1}}[1] | extent = | area = | map = | map_caption = }} The Stony Mountain Formation is a stratigraphical unit of Ashgill age in the Western Canadian Sedimentary Basin. It takes the name from the community Stony Mountain, Manitoba, and was first described in the town quarry by D.B. Dowling in 1900.[1] LithologySubdivisionsThe Stony Mountain Formation is divided in the following sub-units: [2]
DistributionThe Stony Mountain Formation occurs throughout the Williston Basin.[2] It reaches a maximum thickness of {{convert|45|m|ft|-1}} in the sub-surface at the Canada/United States border, and thins out towards the east, north and west. In Manitoba, where it is exposed at the surface in the erosion belt, it has a thickness of {{convert|30|m|ft|-1}}. Relationship to other unitsThe Stony Mountain Formation is slightly unconformably overlain by the Stonewall Formation and sharply overlays the Red River Formation or the Herald Formation.[2] References1. ^Dowling, D.B., 1900. Report on the Geology of the West Shore and Islands of Lake Winnipeg; Geological Survey of Canada, Annual Report 1898, Volume XI, Part F, with Map 664. {{Western Canadian Sedimentary Basin|Saskatchewan=yes}}2. ^1 2 3 {{Cite web|url=http://cgkn1.cgkn.net/weblex/weblex_litho_detail_e.pl?00053:014604|title= Stony Mountain Formation|author=Lexicon of Canadian Geologic Units |accessdate=2010-02-04}} 3 : Stratigraphy of Saskatchewan|Stratigraphy of Manitoba|Ordovician geology of North Dakota |
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