Lynx Formation (Group) | |
---|---|
Stratigraphic range: | |
Type | Formation or Group |
Sub-units | Mistaya Formation Bison Creek Formation Lyell Formation Sullivan Formation Waterfowl Formation |
Underlies | Survey Peak Formation |
Overlies | Arctomys Formation |
Thickness | up to 1,220 metres (4,000 ft)[1] |
Lithology | |
Primary | Carbonate rocks |
Other | Shale |
Location | |
Coordinates | 53°08′27″N 119°02′57″W / 53.1407°N 119.0492°W |
Region | Canadian Rockies |
Country | Canada |
Type section | |
Named for | Lynx Mountain |
Named by | C.D. Walcott, 1913 |
The Lynx Formation or Lynx Group is a stratigraphic unit of Late Cambrian (Dresbachian) age in the Western Canada Sedimentary Basin.[2] It is present in the Canadian Rockies of Alberta and British Columbia. It was originally described as the Lynx Formation by Charles Doolittle Walcott in 1913, based on and named for outcrops on the slopes of Lynx Mountain on the continental divide east of Mount Robson. It was subdivided into five formations and elevated to group status by J.D. Aitken and R.G. Greggs in 1967.[3] The name Lynx Formation continues to be used in areas where some or all of the subdivisions cannot be distinguished. All of the formations in the Lynx Group include fossil trilobites and some contain the stromatolite Collenia.[4]
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