Unit Name: Mount Greene Beds
Unit Type: Lithostratigraphic
Rank: Formation
Status: Formal
Usage: Currently in use
Age Interval: Asselian - Artinskian ? (299 - 275.6 ma)
Age Justification: Zoophycos, and Telford "Russian" Brachiopod fauna occur at the type section and in homotaxial strata at Carbon Creek (Sec. 145A) and Pine Pass (Sec. 145). Recent conodont research (C.M.H., unpublished) of these beds have not yielded any Permian faunas, but rather well preserved upper Lower Carboniferous faunas (Serpukhovian). These faunas are either reworked or indicate that age relationships are questionable.
Province/Territory: Alberta; British Columbia
Originator: McGugan, A., 1967, p. 62, 84.
Type Locality:
West flank of Mount Greene, north of Peace River, northeastern British Columbia, east of Finlay Forks (Sec. 150A, 56 deg 04'N, 123 deg 17'W).
Distribution:
48 m (157 ft) at the type section. Similar at Chowade River headwaters to the north (Sec. 151A). Homotaxial strata measure 85 m (279 ft) at Carbon Creek to the south (Sec. 145A) and similar beds in a syncline at Pine Pass (Sec. 145) are mainly covered. Not recognized in the eastern front ranges and foothills subsurface, except for the homotaxial Belloy Formation in the Peace River subsurface.
Lithology:
At the type section the formation consists of thin-bedded phosphatic, blocky and shaly siltstone and silty carbonate beds with chert nodules, and chert lenses and beds.
Relationship:
Unconformably overlain by the Ranger Canyon Formation with basal phosphatic conglomerate. Disconformably overlies, with basal phosphatic conglomerate and sandstones various Carboniferous rocks of the Stoddart Group. Homotaxial beds (Belcourt Formation) in carbonate facies occur to south in the Wapiti-Belcourt area (Sec. 136-142, McGugan et al., 1964), and the Mount Greene Beds correspond with middle and lower parts of the Kindle Formation (Bamber, pers. comm., 1979). Homotaxial in part with Belloy Formation of Peace River subsurface, and with Johnston Canyon and Telford formations of the southern Rocky Mountains.
History:
McGugan (1967) proposed the informal name Mount Greene Beds to refer to a fossiliferous limestone and phosphatic shaly siltstone succession homotaxial with, and apparently with lithological and faunal affinities to the Johnston Canyon, Telford and Ross Creek formations further south. These beds are now generally correlated with the Kindle Formation.
Other Citations:
Hovdebo, 1962; Irish, 1962, 1963; McGugan, 1967; McGugan et al., 1964.
Source: CSPG Lexicon of Canadian Stratigraphy, Volume 4, western Canada, including eastern British Columbia, Alberta, Saskatchewan and southern Manitoba; D.J. Glass (editor)
Contributor: C.M. Henderson; A. McGugan
Entry Reviewed: Yes
Name Set: Lithostratigraphic Lexicon
LastChange: 27 May 2004