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

2025-06-21T20:26:05Z

removed Category:Dolomite formations; added Category:Dolomite formations of Canada using HotCat

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{{Infobox Rockunit
| name = Debolt Formation
| image =
| caption =
| type = [[Geological formation]]
| age = {{Fossil range|Visean|Visean|[[Meramecian]]}}
| period = Visean
| prilithology = [[Limestone]], [[Dolomite (rock)|dolomite]]
| otherlithology = [[Shale]], [[anhydrite]]
| namedfor = [[Debolt, Alberta]]
| namedby = G. Macauley, 1958
| region = [[Alberta]], [[British Columbia]]
| country = [[Canada]]
| coordinates = {{coord|55.3057|N|117.8961|W|name=Amerada Crown GF23-11|display=inline,title}}
| unitof = [[Rundle Group]]
| subunits = Upper Debolt<br>Lower Debolt
| underlies = [[Golata Formation]]
| overlies = [[Shunda Formation]]
| thickness = up to {{convert|366|m|ft|-1}}<ref name=lexicon>{{Cite web|url=http://cgkn1.cgkn.net/weblex/weblex_litho_detail_e.pl?00053:003842 |archive-url=https://archive.today/20120711082741/http://cgkn1.cgkn.net/weblex/weblex_litho_detail_e.pl?00053:003842 |url-status=dead |archive-date=2012-07-11 |title=Debolt Formation |author=[[Lexicon of Canadian Geologic Units]] |accessdate=2009-02-10 }}</ref>
| extent =
| area =
| map =
| map_caption =
}}
The '''Debolt Formation''' is a [[stratigraphic unit]] of [[Meramecian]] [[Geochronology|age]] in the [[Western Canadian Sedimentary Basin]].

It takes the name from the hamlet of [[Debolt, Alberta]], and was first described in the Amerada Crown GF23-11 well near Debolt by G. Macauley in 1958.<ref>Macauley, G., 1958. Late Paleozoic of Peace River area, Alberta. In: Jurassic and Carboniferous of western Canada; Goodman, A.J. (Ed.), p. 289-308. [[American Association of Petroleum Geologists]]</ref>

==Lithology==
The Debolt Formation is commonly subdivided into a lower and upper unit. Lower Debolt rocks are bioclastic [[limestones]] deposited on a stable carbonate ramp. These lower Debolt rocks are rarely dolomitized and therefore have little porosity or commercial use. Upper Debolt sedimentation is characterized by a number of shallowing upwards facies. At the base of the Upper Debolt is distal and medial ramp argillaceous limestone facies with limited laminations and thin bedding. These argillaceous facies rarely contain clean carbonate interbeds in the medial ramp setting, predominantly [[wackestone]]s and [[packstone]]s. These facies are followed by a capping proximal ramp/shoal facies with abundant skeletal packstones and grainstones.<ref>{{cite journal|last1=Petrel Robertson Consulting|title=Characterization of Belloy and Debolt Water Disposal Zones in the Montney Play Fairway, Northeast B.C.|date=December 2014|issue=Geoscience BC Report 2015-03|url=http://www.geosciencebc.com/s/Report2015-03.asp}}</ref>

==Distribution==
The Debolt Formation is present in the sub-surface in the [[Peace River Country]] in [[northern Alberta]] and north-eastern [[British Columbia]]. The formation is {{convert|366|m|ft|-1}} thick close to the [[Rocky Mountains]], and thins out northward and eastward. It has a thickness of {{convert|244|m|ft|-1}} at its type locality near [[Debolt, Alberta]].<ref name=lexicon/>

==Relationship to other units==
The Debolt Formation is the upper most component of the [[Rundle Group]]. It rests conformably on the [[Shunda Formation]], resting on [[shale]] and [[carbonate]]s. It is overlain conformably by the [[Golata Formation]] of the [[Stoddart Group]] in the west, and the upper contact becomes [[unconformity|unconformable]] with gradually newer formations to the east and north ([[Permian]], [[Triassic]], [[Jurassic]] and [[Cretaceous]] beds).

==References==
{{reflist}}

{{Western Canadian Sedimentary Basin|Liard_River=yes|Northwest_Plains=yes}}

[[Category:Geologic formations of Alberta]]
[[Category:Geologic formations of British Columbia]]
[[Category:Western Canadian Sedimentary Basin]]
[[Category:Mississippian Series]]
[[Category:Carboniferous Alberta]]
[[Category:Carboniferous British Columbia]]
[[Category:Carboniferous System of North America]]
[[Category:Limestone formations of Canada]]
[[Category:Dolomite formations of Canada]]
[[Category:Shale formations of Canada]]

Debolt Formation - Revision history

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