Boulder Creek Formation

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Boulder Creek Formation
Hasler Formation
OverliesHulcross Formation
ThicknessUp to 171 metres (560 ft)[1]
Lithology
PrimarySandstone, conglomerate
OtherCarbonaceous shale, siltstone
Location
Region British Columbia
Country Canada
Type section
Named forA tributary to Commotion Creek
Named byE.M.Spieker, 1921.[2]

The Boulder Creek Formation is a

Commotion Formation, it was elevated to formation status by D.F. Stott in 1982.[3]

The formation was deposited in shallow marine to shoreline environments during the

fossils.[1][3]

Lithology and Environment of Deposition

The Boulder Creek Formation records the transition from

argillaceous sandstones, carbonaceous shales and thin coal beds.[3][4]

Thickness and Distribution

Outcrops of the Boulder Creek Formation can be seen along the Peace River eastward from Hudson's Hope, and it is present in the subsurface in the Peace River plains to the east. It is well exposed in the foothills of the Canadian Rockies between the Peace and Wapiti Rivers, where it reaches thicknesses of up to 171 metres (560 ft). It can be traced southward through the foothills almost as far the Kakwa River near the British Columbia-Alberta boundary.[1]

Relationship to Other Units

The Boulder Creek Formation is part of the

Commotion Formation, the Boulder Creek was elevated to formational status along with the other members of the Commotion by D.F. Stott in 1982, who proposed that the term 'Commotion Formation' be abandoned.[3][1]

The Boulder Creek Formation conformably overlies the marine shales of the Hulcross Formation, and is conformably overlain by the marine shales of the Hasler Formation. It is equivalent to the

Scatter Formation in the Liard River area. Equivalent beds may be present above the coal-bearing strata near Grande Cache.[1]

See also

References

  1. ^
    ISBN 0-920230-23-7
    .
  2. ^ a b Spieker, E.M. 1921. The geology and oil resources of the foothills south of the Peace River in northeastern British Columbia. In: Report of oil surveys in the Peace River District, 1920, by J.A Dresser and E.M. Spieker. British Columbia Department of Lands, 21 p.
  3. ^ a b c d Stott, D.F. 1982. Lower Cretaceous Fort St. John Group and Upper Cretaceous Dunvegan Formation in the foothills and plains of Alberta, British Columbia, District of Mackenzie and Yukon Territory. Geological Survey of Canada, Bulletin 328, 124 p.
  4. ^ Stott, D.F. 1963. Stratigraphy of the Lower Cretaceous Fort St. John Group and Gething and Cadomin Formations, foothills of Alberta and British Columbia. Geological Survey of Canada, Paper 62-39, 48 p.
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