Mannville Group

Mannville Group Stratigraphic range: Early Cretaceous PreЄ Є O S D C P T J K Pg N
Type	Geological formation
Sub-units	Glauconitic Sandstone, Ostracod Beds, Ellerslie Member, Grand Rapids Formation, Clearwater Formation, McMurray Formation, Waseca Sand, Sparky Sand, General Petroleum Sand, Rex Sand, Lloydminster Sand, Cummings Member, Dina Member, Pense Formation, Cantuar Formation, Success Formation
Underlies	Colorado Group
Overlies	Rundle Group, Banff Formation, Wabamun Formation
Thickness	up to 145 metres (480 ft)^[1]
Lithology
Primary	Sandstone
Other	Shale
Location
Coordinates	53°18′31″N 111°09′15″W / 53.3087°N 111.1541°W / 53.3087; -111.1541 (Northwest Mannville 1 well)
Region	Alberta, Saskatchewan
Country	Canada
Type section
Named for	Mannville, Alberta
Named by	Nauss, 1945

The Mannville Group is a stratigraphical unit of Cretaceous age in the Western Canadian Sedimentary Basin.

It takes the name from the town of Mannville, Alberta, and was first described in the Northwest Mannville 1 well by A.W. Nauss in 1945.^[2]

Lithology

The Mannville Group consists of interbedded continental sand and shale in the base, followed by a calcareous sandstone member, marine shale, glauconitic sandstone and salt and pepper sandstone. An additional non-marine sequence is present in north-eastern Alberta.

Hydrocarbon production

Bitumen is produced from the McMurray Formation at the Athabasca Oil Sands. Heavy Oil is produced from the Wabiskaw Member of the Clearwater Formation in the Wabasca oil field, and from multiple formations in the Lloydminster and Provost areas in eastern Alberta and western Saskatchewan. Natural gas is extracted from the Ostracod and Glauconite beds in southern Alberta, and light oil is extracted from the Ellerslie Member in central and southern Alberta. Multiple oil fields^[3] and gas fields^[4] tap into the Manville Group.

Total gas reserves amount to 316,799 x 10⁶m³ in the Lower Mannville and 644,774 x 10⁶m³ in the Upper Mannville.^[5] Recoverable oil reserves amount to 105.64 x 10⁶m³ in the Lower Mannville and 199.20 x 10⁶m³ in the Upper Mannville.^[6]

Distribution

The Mannville Group reaches a thickness of 145 feet (40 m) in its type locality. It occurs in the sub-surface in central Alberta, extending east-west from Edmonton to Lloydminster and north-south from the Deep Basin to the United States border. It is present in the sub-surface in west-central and southern Saskatchewan.

Relationship to other units

The Mannville Group is discomformably overlain by the Joli Fou Formation shale of the Colorado Group. It rests unconformably on the older Paleozoic carbonates.

It is correlated with the lower Blairmore Group in the Canadian Rockies foothills and to the Bullhead Group and the Spirit River Formation of the Fort St. John Group in north-western Alberta. It is also equivalent to the Cantuar Formation in Saskatchewan and the Swan River Formation in Manitoba.

Subunits

The Mannville Group includes the following sub-units:

Central and southern Alberta

Subdivision	Sub-unit	Age	Lithology	Max Thickness	Reference
Upper	Upper Mannville	marine shale and sandstone
Upper	Glauconitic Sandstone	Early Cretaceous	very fine to medium grained quartz sandstone with siderite and glauconite	35 m (110 ft)	^[7]
Lower Mannville
	Ostracod Beds	Early Cretaceous	Unit A: shale and fossiliferous limestone Unit B: argillaceous limestone with ostracod fossils Unit C: dark shale with siltstone and sandstone interbed Unit D: fine to medium grained lithic calcareous sandstone with kaolinite and chert	40 m (130 ft)	^[8]
	Ellerslie Member	Early Cretaceous	Upper: fine grained sand with sandy shale and shaley sand lenses Lower: medium grained quartz sand, siltstone, coal	40 m (130 ft) 30 m (100 ft)	^[9]
	Detrital Beds	Early Cretaceous	Chert pebbles, lithic sandstone, shale, siltstone	70 m (230 ft)	^[10]

In southern Alberta, the Ellerslie Member is replaced by the Sunburst Member, Taber Sandstone, and Cutbank Sandstone.

Athabasca region

Sub-unit	Age	Lithology	Max Thickness	Reference
Grand Rapids Formation	Albian	bitumenous fine to medium sand (A, B and C sands, separated by silt and shale)	125 m (410 ft)	^[11]
Clearwater Formation	Albian	black and green shales and sand	85 m (280 ft)	^[12]
Wabiskaw Member	Albian	glauconitic sands with black fissile shale	35 m (110 ft)	^[13]
McMurray Formation	late Barremian to Aptian	fine grained bitumenous sands	60 m (200 ft)	^[14]

Lloydminster region

Sub-unit	Age	Lithology	Max Thickness	Reference
Colony Sand	Early Cretaceous	friable glauconitic and argillaceous sandstone	15 m (50 ft)	^[15]
McLaren Member	Early Cretaceous	very fine grained sandstone and shale	18 m (60 ft)	^[16]
Waseca Sand	Early Cretaceous	sand with silt and shale	25 m (80 ft)	^[17]
Sparky Sand	Early Cretaceous	sand and shale	12 m (40 ft)	^[18]
General Petroleum Sand	Early Cretaceous	very fine to fine grained quartzose sand	15 m (50 ft)	^[19]
Rex Sand	Early Cretaceous	very fine to fine grained quartzose sand with silt and shale	14 m (50 ft)	^[20]
Lloydminster Sand	Early Cretaceous	unconsolidated quartz sand with silt	30 m (100 ft)	^[21]
Cummings Member	Early Cretaceous	shale with beds of salt-and-pepper sandstone	27 m (90 ft)	^[22]
Dina Member	Early Cretaceous	quartz sandstone with siltstone and shale	60 m (200 ft)	^[23]

Southern Saskatchewan

Sub-unit	Age	Lithology	Max Thickness	Reference
Pense Formation	Albian	fine grained sandstone, clay, shaly silt	36 m (120 ft)	^[24]
Cantuar Formation	Aptian to Albian	mudstone and sandstone	120 m (390 ft)	^[25]
Success Formation	Jurassic to Lower Cretaceous	quartzose sandstone and siltstone	75 m (250 ft)	^[26]

References

↑ Lexicon of Canadian Geologic Units. "Mannville Group". Retrieved 2009-03-01.
↑ Nauss, Arthur William, 1945. Cretaceous stratigraphy of Vermilion area, Alberta, Canada; American Association of Petroleum Geologists (AAPG), AAPG Bulletin, vol. 29, no. 11 (November), pp. 1605-1629.
↑ Alberta Geological Survey. "Oil Production from the Lower Mannville". Retrieved 2009-03-02.
↑ Alberta Geological Survey. "Gas Production from the Lower Mannville". Retrieved 2009-03-02.
↑ Alberta Geological Survey. "Gas Production from the Upper Mannville". Retrieved 2009-03-02.
↑ Alberta Geological Survey. "Oil Production from the Upper Mannville". Retrieved 2009-03-02.
↑ Lexicon of Canadian Geologic Units. "Glauconitic". Retrieved 2009-03-01.
↑ Lexicon of Canadian Geologic Units. "Ostracod". Retrieved 2009-03-01.
↑ Lexicon of Canadian Geologic Units. "Ellerslie". Retrieved 2009-03-01.
↑ Lexicon of Canadian Geologic Units. "Detrital". Retrieved 2009-03-01.
↑ Lexicon of Canadian Geologic Units. "Grand Rapids". Retrieved 2009-03-01.
↑ Lexicon of Canadian Geologic Units. "Clearwater". Retrieved 2009-03-01.
↑ Lexicon of Canadian Geologic Units. "Wabiskaw". Retrieved 2009-03-01.
↑ Lexicon of Canadian Geologic Units. "McMurray". Retrieved 2009-03-01.
↑ Lexicon of Canadian Geologic Units. "Colony Sand". Retrieved 2010-01-09.
↑ Lexicon of Canadian Geologic Units. "McLaren Member". Retrieved 2010-01-03.
↑ Lexicon of Canadian Geologic Units. "Waseca". Retrieved 2009-03-01.
↑ Lexicon of Canadian Geologic Units. "Sparky". Retrieved 2009-03-01.
↑ Lexicon of Canadian Geologic Units. "General Petroleum". Retrieved 2009-03-01.
↑ Lexicon of Canadian Geologic Units. "Rex". Retrieved 2009-03-01.
↑ Lexicon of Canadian Geologic Units. "Lloydminster". Retrieved 2009-03-01.
↑ Lexicon of Canadian Geologic Units. "Cummings". Retrieved 2009-03-01.
↑ Lexicon of Canadian Geologic Units. "Dina". Retrieved 2009-03-01.
↑ Lexicon of Canadian Geologic Units. "Pense Formation". Retrieved 2010-01-03.
↑ Lexicon of Canadian Geologic Units. "Cantuar Formation". Retrieved 2010-01-03.
↑ Lexicon of Canadian Geologic Units. "Success Formation". Retrieved 2010-01-03.

Western Canadian Sedimentary Basin

Hydrocarbon history	Oil sands and heavy oil Frontier exploration and development Natural gas liquids Natural gas

Depositional regions	Southern Alberta Central Alberta Northwestern Alberta Plains South-central Canadian Rockies foothills North-east Plains North-central foothills Liard River Fort Nelson Northern Rocky Mountains Fort St. John Saskatchewan Western Manitoba

Northeastern plains	Bearpaw FM Belly River GRP Lea Park FM La Biche GRP Viking FM Joli Fou FM Colony SS Mannville GRP McLaren MBR Grand Rapids FM Waseca SS Sparky SS Gen. Petr. SS Clearwater FM Rex SS Lloydminster SS Wabiskaw MBR Cummings MBR McMurray FM Dina MBR Banff FM Exshaw FM Wabamun FM Winterburn FM Woodbend GRP Grosmont FM Irteton FM Cooking Lake FM Beaverhill Lake GRP Elk Point GRP Canadian Shield

Central Alberta	Paskapoo FM Scollard FM Edmonton GRP Battle FM Whitemud MBR Horseshoe Canyon FM Bearpaw FM Belly River GRP Ribstone Creek MBR Victoria MBR Brosseau MBR Lea Park FM Colorado GRP Cardium FM Mannville GRP Glauconitic Sandstone Ostracod Beds Sunburst Member Taber Member Detrital Beds Fernie GRP Rock Creek MBR Nordegg MBR Rundle GRP Mount Head FM Elkton MBR Shunda FM Pekisko FM Banff FM Exshaw FM Canadian Shield

Southern Alberta plains	Cypress Hills FM Porcupine Hills FM Ravenscrag FM Edmonton GRP Belly River GRP Oldman FM Foremost FM Pakowki FM Milk River FM Colorado GRP Mannville GRP Ellis GRP Swift FM Rierdon FM Sawtooth FM Rundle GRP Banff FM Exshaw FM Bakken FM Wabamun FM Crowfoot FM Nisku FM Ireton FM Leduc FM Cooking Lake FM Beaverhill Lake GRP Elk Point GRP Canadian Shield

Saskatchewan	Cypress Hills FM Ravenscrag FM Frenchman FM Whitemud FM Eastend FM Bearpaw FM Judith River GRP Belly River FM Oldman FM Foremost FM Lea Park FM Pakowki FM Milk River FM Colorado GRP Viking FM Mannville GRP Pense FM Cantuar FM Success FM Vanguard FM Ellis GRP Swift FM Rierdon FM Sawtooth FM Shaunavon FM Piper FM Gravelbourg FM Gypsum Springs FM Watrous FM Big Snowy GRP Madison GRP Charles FM Poplar Ratcliffe Midale Mission Canyon FM Kisbey SS Alida Tilston Lodgepole FM Souris Valley Three Forks GRP Bakken FM Big Valley FM Torquay FM Saskatchewan GRP Birdbear FM Duperow FM Manitoba GRP Souris River FM Elk Point GRP Davson Bay FM Prairie FM Winnipegosis FM Ashern FM Interlake FM Stonewall FM Stony Mountain FM Herald FM Yeoman FM Winnipeg FM Deadwood FM Canadian Shield

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