Hollebeke Formation

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]

Borsato Formation
Stratigraphic range: Frasnian
~382–373 Ma
TypeFormation
Unit ofFairholme Group
UnderliesBorsato Formation
OverliesOrdovician or older formations
ThicknessUp to about 240 m (790 ft)[1]
Lithology
PrimaryLimestone, dolomite
Location
Coordinates49°23′56″N 114°34′05″W
Region British Columbia
 Alberta
Country Canada
ExtentWestern Canada Sedimentary Basin & southern Rocky Mountains
Type section
Named forMount Hollebeke
Named byR.A. Price
Year defined1965[2]
Hollebeke Formation (Canada)
Hollebeke Formation (Alberta)

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.
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