Baldonnel Formation

Last updated
Baldonnel Formation
Stratigraphic range: Carnian
Type Geological formation
Unit of Schooler Creek Group
Sub-units Ducette Member
Underlies Pardonet Formation, Fernie Formation
Overlies Charlie Lake Formation
Thicknessup to 146 metres (480 ft) [1]
Lithology
Primary Limestone, dolomite
Other Siltstone, sandstone
Location
Coordinates 56°06′51″N122°48′39″W / 56.11404°N 122.81095°W / 56.11404; -122.81095 (Baldonnel Formation)
Region Alberta, British Columbia
CountryCanada
Type section
Named for Baldonnel, British Columbia
Named byL.M. Clark, 1957

The Baldonnel Formation is a stratigraphical unit of Carnian age in the Western Canadian Sedimentary Basin.

Contents

It takes the name from the hamlet of Baldonnel, British Columbia, and was first described in the Pacific Fort St. John No. 16 well by L.M. Clark in 1957. [2] A surface type locality can be found at Brown Hill, on the north shore of Williston Lake, at 56°06′51″N122°48′39″W / 56.11404°N 122.81095°W / 56.11404; -122.81095 (Baldonnel Formation) .

Lithology

The upper unit of the Baldonnel Formation consists of grey massive limestone and dolomite in the Canadian Rockies foothills and in the western range between the Liard River and Peace River. Siltstone and fine grained sandstone occur as interbeds.

In the sub-surface of the Peace River Country, the Baldonnel Formation is represented by porous and permeable dolomite.

Oil and gas production

Gas is produced from the Baldonnel Formation in north-eastern British Columbia. [3]

Distribution

The Baldonnel Formation occurs in outcrops in the Williston Lake area of the Canadian Rockies, and in the sub-surface from the Liard River to the Peace River Country.

It reaches a maximum thickness of 146 metres (480 ft) south of Hudson's Hope.

Relationship to other units

The Baldonnel Formation is the middle member of the Schooler Creek Group. It is conformably overlain by the Pardonet Formation limestone and siltstone or unconformably overlain by the Fernie Formation shale. North of the Williston Lake it overlies the dolomite beds of the Charlie Lake Formation.

It is equivalent to the upper parts of the McLearn Formation and Ludington Formation. It can also be correlated with the Winnifred Member of the Whitehorse Formation in central Alberta.

Ducette Member

The lower unit is designated as Ducette Member. [4] It occurs only in the south-west of the range, between the Liard River and the Peace River.

It is composed of argillaceous siltstone, very fine grained sandstone and limestone.

Related Research Articles

The Muskeg Formation is a geologic formation of Middle Devonian (Givetian) age in the Western Canada Sedimentary Basin. It extends from the plains of northwestern Alberta to northeastern British Columbia, and includes important petroleum and natural gas reservoirs in the Zama lake and Rainbow Lake areas of northwestern Alberta.

<span class="mw-page-title-main">Fernie Formation</span> Stratigraphic Unit in Western Canada

The Fernie Formation is a stratigraphic unit of Jurassic age. It is present in the western part of the Western Canada Sedimentary Basin in western Alberta and northeastern British Columbia. It takes its name from the town of Fernie, British Columbia, and was first defined by W.W. Leach in 1914.

<span class="mw-page-title-main">Spirit River Formation</span>

The Spirit River Formation is a stratigraphical unit of middle Albian age in the Western Canadian Sedimentary Basin.

<span class="mw-page-title-main">Peace River Formation</span>

The Peace River Formation is a stratigraphical unit of middle Albian age in the Western Canadian Sedimentary Basin.

The Belloy Formation is a stratigraphical unit of Permian age in the Western Canadian Sedimentary Basin.

<span class="mw-page-title-main">Redknife Formation</span>

The Redknife Formation is a stratigraphical unit of Devonian age in the Western Canadian Sedimentary Basin.

The Schooler Creek Group is a stratigraphic unit of Middle to Late Triassic age in the Western Canadian Sedimentary Basin. It is present in northeastern British Columbia. It was named for Schooler Creek, a left tributary of Williston Lake, and was first described in two oil wells northwest of Fort St. John, by F.H. McLearn in 1921. Exposures along Williston Lake serve as a type locality in outcrop.

The Wabamun Formation is a stratigraphic unit of Late Devonian (Famennian) age in the Western Canada Sedimentary Basin. It takes the name from Wabamun Lake and was first described in the Anglo Canadian Wabamun Lake No. 1 well by Imperial Oil in 1950.

The Doig Formation is a geologic formation of middle Triassic age in the Western Canadian Sedimentary Basin. It takes the name from Doig River, a tributary of the Beatton River, and was first described in the Texaco N.F.A. Buick Creek No. 7 well by J.H. Armitage in 1962..

The Woodbend Group is a stratigraphical unit of Frasnian age in the Western Canadian Sedimentary Basin.

The Tetcho Formation is a stratigraphical unit of Famennian age in the Western Canadian Sedimentary Basin.

The Winterburn Group is a stratigraphical unit of Frasnian age in the Western Canadian Sedimentary Basin.

<span class="mw-page-title-main">Ishbel Group</span>

The Ishbel Group is a stratigraphic unit of Permian age in the Western Canadian Sedimentary Basin. It is present in the Canadian Rockies of Alberta and British Columbia. First defined by A. McGugan in 1963, it is named for Mount Ishbel of the Sawback Range in Banff National Park, and parts of the group were first described in the vicinity of the mountain at Ranger Canyon and Johnston Canyon.

The Nahanni Formation is a stratigraphical unit of Givetian age in the Western Canadian Sedimentary Basin.

The Stony Mountain Formation is a stratigraphical unit of Ashgill age in the Western Canadian Sedimentary Basin.

The Liard Formation is a stratigraphic unit of Middle Triassic to Late Triassic age in the Western Canadian Sedimentary Basin that is present in northeastern British Columbia. It takes its name from the Liard River, and was first described from outcrops on the southern bank of that river, near Hell Gate Rapids in the Grand Canyon of the Liard, by E.D. Kindle in 1946.

The Grosmont Formation is a stratigraphical unit of Frasnian age in the Western Canadian Sedimentary Basin.

The Whitehorse Formation is a geologic formation of Late Triassic age. It is present on the western edge of the Western Canada Sedimentary Basin in western Alberta and northeastern British Columbia. It was first described as a member of the Spray River Formation by P.S. Warren in 1945, who named it for Whitehorse Creek, a tributary of the McLeod River south of Cadomin, Alberta. It was later raised to formation status.

Toad Formation, Grayling Formation, and Toad-Grayling Formation are obsolete names for the strata of the Early to Middle Triassic Doig and Montney Formations. They were applied in the foothills and Rocky Mountains of northeastern British Columbia, on the western edge of the Western Canada Sedimentary Basin. Although the names are considered obsolete, their usage persists.

The geology of Lithuania consists of ancient Proterozoic basement rock overlain by thick sequences of Paleozoic, Mesozoic and Cenozoic marine sedimentary rocks, with some oil reserves, abundant limestone, dolomite, phosphorite and glauconite. Lithuania is a country in the Baltic region of northern-eastern Europe.

References

  1. Lexicon of Canadian Geologic Units. "Baldonnel Formation". Archived from the original on July 9, 2012. Retrieved February 14, 2009.
  2. Clark, L.M., 1957. Fort St. John sets pace for Peace River gas fields. Oil and Gas Journal, v. SS, no. 33, p.132-134.
  3. Riediger, C. (December 2004). "Hydrocarbon source rock characterization and thermal maturity of the Upper Triassic Baldonnel and Pardonet formations, northeastern British Columbia, Canada" . Bulletin of Canadian Petroleum Geology. 52 (4): 277–301. doi:10.2113/52.4.277 . Retrieved February 14, 2009.
  4. Lexicon of Canadian Geologic Units. "Ducette Member". Archived from the original on 2013-02-21. Retrieved February 14, 2009.