Hollebeke Formation

Borsato Formation
Stratigraphic range: Frasnian ~382–373  Ma PreꞒ Ꞓ O S D C P T J K Pg N
Type	Formation
Unit of	Fairholme Group
Underlies	Borsato Formation
Overlies	Ordovician or older formations
Thickness	Up to about 240 m (790 ft) [1]
Lithology
Primary	Limestone, dolomite
Location
Coordinates	49°23′56″N114°34′05″W / 49.39889°N 114.56806°W / 49.39889; -114.56806 (Hollebeke Formation)
Region	British Columbia Alberta
Country	Canada
Extent	Western Canada Sedimentary Basin & southern Rocky Mountains
Type section
Named for	Mount Hollebeke
Named by	R.A. Price
Year defined	1965 [2]
Hollebeke Formation (Canada) Show map of Canada Hollebeke Formation (Alberta) Show map of Alberta

The Hollebeke Formation is a stratigraphic unit of Late Devonian (Frasnian) age. It is present on the western edge of the Western Canada Sedimentary Basin in the southern Rocky Mountains of Alberta and British Columbia. It consists of carbonate rocks, and was named for Mount Hollebeke in the Flathead Range near North Kootenay Pass by R.A. Price in 1965. ^{[1] [2]}

Thickness and lithology

The Hollebeke Formation was deposited in a marine environment and ranges in thickness from about 100 to 240 m (328 to 787 ft). The lower part consists of locally silty or argillaceous dolomite and limestone. The upper part is very fine crystalline limestone. ^{[1] [2]}

Distribution and relationship to other units

The Hollebeke Formation is present in Rocky Mountains of southeastern British Columbia and southwestern Alberta, west of the Lewis Thrust Fault and south of about 50°N latitude. It unconformably overlies Ordovician or Cambrian formations, or the late Precambrian Purcell Supergroup, depending on the location. It is overlain by the Borsato Formation. ^{[1] [2] [3]}

References

1. Glass, D.J. (editor) 1997. Lexicon of Canadian Stratigraphy, vol. 4, Western Canada including eastern British Columbia, Alberta, Saskatchewan and southern Manitoba, p. 579. Canadian Society of Petroleum Geologists, Calgary, 1423 p. on CD-ROM. ISBN   0-920230-23-7
2. Price, R.A., 1965. Flathead map-area, British Columbia and Alberta. Geological Survey of Canada, Memoir 336.
3. Alberta Geological Survey. "Alberta Table of Formations, May 2019" (PDF). Alberta Energy Regulator. Retrieved 24 March 2020.