Unit Name: Hay River Limestones
Unit Type: Lithostratigraphic
Rank: Member
Status: Formal
Usage: Obsolete
Age Interval: Late Devonian (385.3 - 359.2 ma)
Age Justification: See under Tathlina and Twin Falls formations.
Province/Territory: Alberta; Northwest Territories

Originator: A.E. Cameron, 1918.

Type Locality:
On Hay River from near Grumbler Rapids to the gorge at Louise Falls.

Distribution:
See below.

Lithology:
Limestone, minor shale and sandstone.

Relationship:
Considered by A.E. Cameron (1922, p. 25B) to be the upper member of the Hay River Series (Upper Devonian). In present-day nomenclature this section is known as the Tathlina and Twin Falls formation and the Louise Falls Member of the Hay River Fm.

Other Citations:
Belyea and McLaren, 1962; A.E. Cameron, 1918, 1922; Law, 1955a, 1955b.

Source: CSPG Lexicon of Canadian Stratigraphy, Volume 2, Yukon Territory and District of Mackenzie; L.V. Hills, E.V. Sangster and L.B. Suneby (editor)
Contributor: L.V. Hills; G.K. Williams
Entry Reviewed: Yes
Name Set: Lithostratigraphic Lexicon
LastChange: 28 Jun 2004