| 词条 | Pine Point Formation |
| 释义 |
| name = Pine Point Formation | image = | caption = | type = Geological formation | age = {{Fossil range|Givetian|Givetian|Givetian}} | period = Givetian | prilithology = Limestone, shale | otherlithology = | namedfor = Pine Point, Northwest Territories | namedby = A.E. Cameron, 1918 | region = WCSB | country = {{flag|Canada}} | coordinates = {{coord|61.01206|-114.25335|display=inline,title|name=Pine Point Formation}} | unitof = | subunits = | underlies = Presqu'ile Formation, Sulphur Point Formation | overlies = Chinchaga Formation | thickness = up to {{convert|115|m|ft|-1}}[1] | extent = | area = | map = | map_caption = }} The Pine Point Formation is a stratigraphical unit of Givetian age in the Western Canadian Sedimentary Basin. It takes the name from Pine Point, a promontory (and former townsite) on the south shore of the Great Slave Lake, west of Fort Resolution, and was first described in outcrop on the shore of the lake between Pine Point and Fort Resolution by A.E. Cameron in 1918.[1] LithologyThe Pine Point Formation is composed of bituminous limestone and calcareous shale.[2] DistributionThe Pine Point Formation reaches a thickness of up to {{convert|115|m|ft|-1}} in its type locality on the shore of the Great Slave Lake. Relationship to other unitsThe Pine Point Formation is overlain by the Presqu'ile Formation and Sulphur Point Formation; It conformably overlays the Chinchaga Formation and Fitzgerald Formation.[2] It is equivalent to Muskeg Formation in northern Alberta, the Dunedin Formation in British Columbia and the upper Nahanni Formation in western Northwest Territories. SubdivisionsThe Pine Point has group status in the southern Northwest Territories, and includes:
References1. ^Cameron, A.E., 1918. Explorations in the vicinity of Great Slave Lake; Geological Survey of Canada, Summary Report 1917, Part C, pp. 21-28. {{Western Canadian Sedimentary Basin|Fort_Nelson=yes|Northwest_Plains=yes}}2. ^1 2 {{Cite web|url=http://cgkn1.cgkn.net/weblex/weblex_litho_detail_e.pl?00053:011877|title= Pine Point Formation|author=Lexicon of Canadian Geologic Units |accessdate=2010-01-03}} 4 : Stratigraphy of the Northwest Territories|Stratigraphy of British Columbia|Devonian southern paleotropical deposits|Givetian |
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