Unit Name: Hamill Series
Unit Type: Lithostratigraphic
Rank: Formation
Status: Formal
Usage: Currently in use
Age Interval: ? Precambrian - Cambrian (4567.17 - 488.3 ma)
Age Justification: No fauna reported.
Province/Territory: British Columbia

Originator: Walker, J.F. and Bancroft, M.F., 1929.

Type Locality:
No type locality was designated by the authors. The sequence derives its name from Hamill Creek, "south of which it is found with the underlying Horsethief formation of the Windermere series." (Walker and Bancroft, ibid, p. 9). Also reported to border the northeast side of the Lardeau map-area from Hamill Creek to Incomappleux River.

No thickness were reported by the above authors, but several hundreds of meters may be inferred from the distribution reported. Rocks of the Hamill Series are widely distributed throughout the Lardeau map-area.

Variety of lithologies, from quartzites, mica shists, micas, phyllites and limestones. The quartzites range in color from white to grey and pink and generally form the basal portion of the series.

In the Lardeau area overlies the Horsethief Formation, also of Windermere age. The top of the Hamill Series is defined as the contact with the base of a prominent and persistent limestone unite (the "Lime dyke"). This limestone unit was designated as the Badshot formation by the authors. On Mount Abbot ridge strata of the Hamill Series appear to be overlain by beds of the Milford Group (Carboniferous/Triassic) (Walker and Bancroft, ibid, p. 13).

Other Citations:
Brown and Lane, 1988; Fox, 1969; Fyles, 1964; Fyles and Eastwood, 1962; Price and Fermor, 1985; Walker and Bancroft, 1929; Wheeler, 1963.

Source: CSPG Lexicon of Canadian Stratigraphy, Volume 4, western Canada, including eastern British Columbia, Alberta, Saskatchewan and southern Manitoba; D.J. Glass (editor)
Contributor: R.G. Greggs
Entry Reviewed: Yes
Name Set: Lithostratigraphic Lexicon
LastChange: 29 Apr 2003