Skoki Formation
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| Skoki Formation | |
|---|---|
| Stratigraphic range: Middle Ordovician ~ | |
| Type | Formation |
| Underlies | Owen Creek Formation |
| Overlies | Outram Formation or Tipperary Quartzite |
| Thickness | Up to 186 metres (610 ft)[1] |
| Lithology | |
| Primary | dolomite |
| Other | Limestone |
| Location | |
| Coordinates | 51°32′00″N 116°03′39″W / 51.53333°N 116.06083°W |
| Region | Canadian Rockies |
| Country | Canada |
| Type section | |
| Named for | Skoki Mountain |
| Named by | Charles Doolittle Walcott[2] |
The Skoki Formation is a stratigraphic unit of Early to Middle Ordovician age that is present on the western edge of the Western Canada Sedimentary Basin in the Canadian Rockies of Alberta and British Columbia.[3] It was named for Skoki Mountain near Lake Louise in Banff National Park by Charles Doolittle Walcott in 1928.[2] The Skoki Formation is fossiliferous and includes remains of brachiopods and other marine invertebrates, as well as conodonts and oncolites.[1]
The Skoki Formation formed as a shallow marine shelf along the western shoreline of the North American Craton during Early to Middle Ordovician time.[3][4] Most of the original limestone was subsequently altered to dolomite. Many beds include quartz sand and silt, and some include layers of brown argillite.[1]