Unit Name: Okse Bay Group
Unit Type: Lithostratigraphic
Rank: Group
Status: Formal
Usage: Currently in use
Age Interval: Middle Devonian - Late Devonian (397.5 - 359.2 ma)
Province/Territory: Nunavut
Originator: McLaren, 1963a.
Type Locality:
Between Bird Fiord and Okse Bay and 8 km to the south on southwestern Ellesmere Island.
Distribution:
Extends form central Ellesmere Island to eastern Grinnell Peninsula. The maximum preserved thickness is about 3,000 m.
Lithology:
The main lithologic associations are: 1) interbedded red and green shale and siltstone with minor very fine-grained sandstone; 2) fine-grained, cross-bedded sandstone with minor shale and siltstone; 3) interbedded red and green shale, siltstone and very fine-grained sandstone arranged in fining-upward cycles; 4) interbedded grey shale, siltstone and fine-grained sandstone with minor coal.
Relationship:
Conformably overlies the Blue Fiord or Bird Fiord Formation and is uncon-formably overlain by Pennsylvanian to Tertiary strata. The Melville Island Group of the western Arctic is approximately equivalent to the Okse Bay Group.
History:
The Okse Bay Group was initially designated as a formation by McLaren (1963a). He recognized it on Ellesmere Island, Grinnell Peninsula and Bathurst Island. Embry and Klovan (1976) raised the Okse Bay to group status and recognized the following formations in the type section: Strathcona Fiord, Hecla Bay, Fram, Hell Gate and Nordstrand Point.
Remark:
First Published : Geological Survey of Canada Maps 20, 21-1959.
Other Citations:
McLaren, 1963a; McGill, 1974; Embry and Klovan, 1976; Trettin, 1978.
Source: CSPG Lexicon of Canadian Stratigraphy, Volume 1, Arctic Archigelage (District of Franklin); R.L. Christie, A.F. Embry, G.A. Van Dyck (editor)
Contributor: A.F. Embry
Entry Reviewed: Yes
Name Set: Lithostratigraphic Lexicon
LastChange: 29 Apr 2003