imported>Volcanoguy: removed Category:Shale formations of Canada; added Category:Shale groups of Canada using HotCat

2025-06-04T19:47:31Z

removed Category:Shale formations of Canada; added Category:Shale groups of Canada using HotCat

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{{Short description|Stratigraphic Group in Western Canada}}
{{Infobox Rockunit
| name = Mannville Group
| image =
| caption =
| type = [[Geological group]]
| age = Early [[Cretaceous]] {{Fossil range|130|99| }}
| period = Early Cretaceous
| prilithology = [[Sandstone]]
| otherlithology = [[Shale]]
| namedfor = [[Mannville, Alberta]]
| namedby = Nauss, 1945
| region = [[Alberta]], [[Saskatchewan]]
| country = [[Canada]]
| coordinates = {{coord|53.3087|N|111.1541|W|region:CA-AB|name=Northwest Mannville 1 well}}
| unitof =
| subunits = [[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 {{convert|145|m|ft|-1}}<ref name=lexicon>{{Cite web|url=http://cgkn1.cgkn.net/weblex/weblex_litho_detail_e.pl?00053:009141|title=Mannville Group|author=[[Lexicon of Canadian Geologic Units]] |access-date=2009-03-01}}</ref>
| extent =
| area =
| map =
| map_caption =
}}
The '''Mannville Group''' is a [[stratigraphic unit]] of [[Cretaceous]] [[Geochronology|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.<ref>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.</ref>

==Lithology==
The Mannville Group consists of interbedded continental [[sand]] and [[shale]] in the base, followed by a calcareous sandstone member, [[marine (ocean)|marine]] shale, [[glauconite|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]]. [[Petroleum|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, Alberta|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 Alberta|central]] and southern Alberta. Multiple oil fields<ref>{{Cite web|url=http://www.ags.gov.ab.ca/graphics/atlas/fg19_23a.jpg|title=Oil Production from the Lower Mannville|author=Alberta Geological Survey|author-link=Alberta Geological Survey|access-date=2009-03-02}}</ref> and gas fields<ref>{{Cite web|url=http://www.ags.gov.ab.ca/graphics/atlas/fg19_23b.jpg|title=Gas Production from the Lower Mannville|author=Alberta Geological Survey|author-link=Alberta Geological Survey|access-date=2009-03-02}}</ref> tap into the Manville Group.

Total gas reserves amount to {{val|316,799e6|u=m3}} in the Lower Mannville and {{val|644,774e6|u=m3}} in the Upper Mannville.<ref>{{Cite web|url=http://www.ags.gov.ab.ca/graphics/atlas/fg19_25b.jpg|title=Gas Production from the Upper Mannville|author=Alberta Geological Survey|author-link=Alberta Geological Survey|access-date=2009-03-02}}</ref> Recoverable oil reserves amount to {{val|105.64e6|u=m3}} in the Lower Mannville and {{val|199.20e6|u=m3}} in the Upper Mannville.<ref>{{Cite web|url=http://www.ags.gov.ab.ca/graphics/atlas/fg19_25a.jpg|title=Oil Production from the Upper Mannville|author=Alberta Geological Survey|author-link=Alberta Geological Survey|access-date=2009-03-02}}</ref>

==Distribution==
The Mannville Group reaches a thickness of {{convert|145|ft|m|-1}} in its type locality. It occurs in the sub-surface in [[central Alberta]], extending east-west from [[Edmonton, Alberta|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 [[unconformity|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====
{|class="wikitable"
|-
! Subdivision !! [[Geological unit|Sub-unit]] !! [[Geochronology|Age]] !! Lithology !! Max Thickness !! Reference
|-
|rowspan=2|Upper
|Upper Mannville
|colspan=4| marine [[shale]] and [[sandstone]]
|-
| Glauconitic Sandstone || [[Early Cretaceous]] ||very fine to medium grained [[quartz]] [[sandstone]] with [[siderite]] and [[glauconite]] || {{convert|35|m|ft|-1|abbr=on}}
|<ref>{{Cite web|url=http://cgkn1.cgkn.net/weblex/weblex_litho_detail_e.pl?00053:005607|title=Glauconitic|author=[[Lexicon of Canadian Geologic Units]] |access-date=2009-03-01}}</ref>
|-
|rowspan=4|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]] || {{convert|40|m|ft|-1|abbr=on}}
|<ref>{{Cite web|url=http://cgkn1.cgkn.net/weblex/weblex_litho_detail_e.pl?00053:011349|title=Ostracod|author=Lexicon of Canadian Geologic Units |access-date=2009-03-01}}</ref>
|-
| Ellerslie Member || Early Cretaceous || Upper: fine grained [[sand]] with sandy shale and shaley sand lenses Lower: medium grained quartz sand, siltstone, [[coal]] || {{convert|40|m|ft|-1|abbr=on}} {{convert|30|m|ft|-1|abbr=on}}
|<ref>{{Cite web|url=http://cgkn1.cgkn.net/weblex/weblex_litho_detail_e.pl?00053:004577 |archive-url=https://archive.today/20120712204051/http://cgkn1.cgkn.net/weblex/weblex_litho_detail_e.pl?00053:004577 |url-status=dead |archive-date=2012-07-12 |title=Ellerslie |author=[[Lexicon of Canadian Geologic Units]] |access-date=2009-03-01 }}</ref>
|-
| Detrital Beds || Early Cretaceous || Chert pebbles, lithic sandstone, shale, siltstone || {{convert|70|m|ft|-1|abbr=on}}
|<ref>{{Cite web|url=http://cgkn1.cgkn.net/weblex/weblex_litho_detail_e.pl?00053:003961|title=Detrital|author=[[Lexicon of Canadian Geologic Units]] |access-date=2009-03-01}}</ref>
|-
|}
*In [[southern Alberta]], the Ellerslie Member is replaced by the Sunburst Member, Taber Sandstone, and Cutbank Sandstone.

====Athabasca region====
{|class="wikitable"
|-
! [[Geological unit|Sub-unit]] !! [[Geochronology|Age]] !! Lithology !! Max Thickness !! Reference
|-
| [[Grand Rapids Formation]] || [[Albian]] || [[bitumen]]ous fine to medium sand (A, B and C sands, separated by [[silt]] and [[shale]]) || {{convert|125|m|ft|-1|abbr=on}}
|<ref>{{Cite web|url=http://cgkn1.cgkn.net/weblex/weblex_litho_detail_e.pl?00053:005808|title=Grand Rapids|author=[[Lexicon of Canadian Geologic Units]] |access-date=2009-03-01}}</ref>
|-
| [[Clearwater Formation]] || Albian || black and green shales and sand || {{convert|85|m|ft|-1|abbr=on}}
|<ref>{{Cite web|url=http://cgkn1.cgkn.net/weblex/weblex_litho_detail_e.pl?00053:003027|title=Clearwater|author=[[Lexicon of Canadian Geologic Units]] |access-date=2009-03-01}}</ref>
|-
| Wabiskaw Member || Albian || [[glauconite|glauconitic]] sands with black fissile shale || {{convert|35|m|ft|-1|abbr=on}}
|<ref>{{Cite web|url=http://cgkn1.cgkn.net/weblex/weblex_litho_detail_e.pl?00053:015927|title=Wabiskaw|author=[[Lexicon of Canadian Geologic Units]] |access-date=2009-03-01}}</ref>
|-
| [[McMurray Formation]] || late [[Barremian]] to Aptian || fine grained bituminous sands || {{convert|60|m|ft|-1|abbr=on}}
|<ref>{{Cite web|url=http://cgkn1.cgkn.net/weblex/weblex_litho_detail_e.pl?00053:009513|title=McMurray|author=[[Lexicon of Canadian Geologic Units]]|access-date=2009-03-01|archive-url=https://archive.today/20120726105500/http://cgkn1.cgkn.net/weblex/weblex_litho_detail_e.pl?00053:009513|archive-date=2012-07-26|url-status=dead}}</ref>
|-
|}

====Lloydminster region====
{|class="wikitable"
|-
! [[Geological unit|Sub-unit]] !! [[Geochronology|Age]] !! Lithology !! Max Thickness !! Reference
|-
| Colony Sand || [[Early Cretaceous]] || friable [[glauconite|glauconitic]] and argillaceous [[sandstone]] || {{convert|15|m|ft|-1|abbr=on}}
|<ref>{{Cite web|url=http://cgkn1.cgkn.net/weblex/weblex_litho_detail_e.pl?00053:003232|title=Colony Sand|author=[[Lexicon of Canadian Geologic Units]] |access-date=2010-01-09}}</ref>
|-
| McLaren Member || Early Cretaceous || very fine grained sandstone and shale || {{convert|18|m|ft|-1|abbr=on}}
|<ref>{{Cite web|url=http://cgkn1.cgkn.net/weblex/weblex_litho_detail_e.pl?00053:009486|title=McLaren Member|author=[[Lexicon of Canadian Geologic Units]] |access-date=2010-01-03}}</ref>
|-
| Waseca Sand || Early Cretaceous || sand with silt and shale || {{convert|25|m|ft|-1|abbr=on}}
|<ref>{{Cite web|url=http://cgkn1.cgkn.net/weblex/weblex_litho_detail_e.pl?00053:016087|title=Waseca|author=[[Lexicon of Canadian Geologic Units]] |access-date=2009-03-01}}</ref>
|-
| Sparky Sand || Early Cretaceous || sand and shale || {{convert|12|m|ft|-1|abbr=on}}
|<ref>{{Cite web|url=http://cgkn1.cgkn.net/weblex/weblex_litho_detail_e.pl?00053:014207|title=Sparky|author=[[Lexicon of Canadian Geologic Units]] |access-date=2009-03-01}}</ref>
|-
| General Petroleum Sand || Early Cretaceous || very fine to fine grained quartzose sand || {{convert|15|m|ft|-1|abbr=on}}
|<ref>{{Cite web|url=http://cgkn1.cgkn.net/weblex/weblex_litho_detail_e.pl?00053:005504|title=General Petroleum|author=[[Lexicon of Canadian Geologic Units]] |access-date=2009-03-01}}</ref>
|-
| Rex Sand || Early Cretaceous || very fine to fine grained quartzose sand with silt and shale || {{convert|14|m|ft|-1|abbr=on}}
|<ref>{{Cite web|url=http://cgkn1.cgkn.net/weblex/weblex_litho_detail_e.pl?00053:012711|title=Rex|author=[[Lexicon of Canadian Geologic Units]] |access-date=2009-03-01}}</ref>
|-
| Lloydminster Sand || Early Cretaceous || unconsolidated quartz sand with silt || {{convert|30|m|ft|-1|abbr=on}}
|<ref>{{Cite web|url=http://cgkn1.cgkn.net/weblex/weblex_litho_detail_e.pl?00053:008608|title=Lloydminster|author=[[Lexicon of Canadian Geologic Units]] |access-date=2009-03-01}}</ref>
|-
| Cummings Member || Early Cretaceous || shale with beds of sandstone || {{convert|27|m|ft|-1|abbr=on}}
|<ref>{{Cite web|url=http://cgkn1.cgkn.net/weblex/weblex_litho_detail_e.pl?00053:003638|title=Cummings|author=[[Lexicon of Canadian Geologic Units]] |access-date=2009-03-01}}</ref>
|-
| Dina Member || Early Cretaceous || quartz sandstone with siltstone and shale || {{convert|60|m|ft|-1|abbr=on}}
|<ref>{{Cite web|url=http://cgkn1.cgkn.net/weblex/weblex_litho_detail_e.pl?00053:004011|title=Dina|author=[[Lexicon of Canadian Geologic Units]] |access-date=2009-03-01}}</ref>
|-
|}

====Southern Saskatchewan====
{|class="wikitable"
|-
! [[Geological unit|Sub-unit]] !! [[Geochronology|Age]] !! Lithology !! Max Thickness !! Reference
|-
| Pense Formation || Albian || fine grained sandstone, clay, shaly silt || {{convert|36|m|ft|-1|abbr=on}}
|<ref>{{Cite web|url=http://cgkn1.cgkn.net/weblex/weblex_litho_detail_e.pl?00053:011695|title=Pense Formation|author=[[Lexicon of Canadian Geologic Units]] |access-date=2010-01-03}}</ref>
|-
| Cantuar Formation || Aptian to Albian || [[mudstone]] and sandstone || {{convert|120|m|ft|-1|abbr=on}}
|<ref>{{Cite web|url=http://cgkn1.cgkn.net/weblex/weblex_litho_detail_e.pl?00053:002280|title=Cantuar Formation|author=[[Lexicon of Canadian Geologic Units]] |access-date=2010-01-03}}</ref>
|-
| Success Formation || [[Jurassic]] to [[Lower Cretaceous]] || quartzose sandstone and siltstone || {{convert|75|m|ft|-1|abbr=on}}
|<ref>{{Cite web|url=http://cgkn1.cgkn.net/weblex/weblex_litho_detail_e.pl?00053:014687|title=Success Formation|author=[[Lexicon of Canadian Geologic Units]] |access-date=2010-01-03}}</ref>
|-
|}

==References==
{{Reflist}}

{{Western Canadian Sedimentary Basin|Northeast_Plains=yes|Central_Plains=yes|South AB=yes|Saskatchewan=yes}}

[[Category:Lower Cretaceous Series of North America]]
[[Category:Geologic groups of Alberta]]
[[Category:Geologic groups of Saskatchewan]]
[[Category:Cretaceous Alberta]]
[[Category:Cretaceous Saskatchewan]]
[[Category:Sandstone groups of Canada]]
[[Category:Shale groups of Canada]]

Mannville Group - Revision history

imported>Volcanoguy: removed Category:Shale formations of Canada; added Category:Shale groups of Canada using HotCat