Unit Name: Hoare Bay Group
Unit Type: Lithostratigraphic
Rank: Group
Status: Formal
Usage: Currently in use
Age Interval: Aphebian (2500 - 1750 ma)
Province/Territory: Nunavut
Originator: Jackson, 1971a; Jackson and Taylor, 1972.
Type Locality:
Hoare Bay - Sunnyside Fiord region of Cumberland Peninsula, Baffin Island.
Distribution:
Highly deformed, possibly in excess of 4,000 m. Together with derived migmatites, underlies most of southern half of Cumberland Peninsula.
Lithology:
Metamorphosed greywacke, shale and siltstone; quartzite, iron-formation, metabasalt, metagabbro and metaultrabasic rocks, minor marble.
Relationship:
Considered to rest unconformably on older granitic gneisses south of Cape Dyer. Possibly equivalent to Piling Group; similar strata on Hall Peninsula south of Cumberland Sound and in the Lake Harbour Group. Has been intruded by granitic rocks. The group has been divided into several map-units, as yet unnamed.
References:
Jackson, G.D. and Taylor, F.C., 1972. Correlation of Major Aphebian Rock Units in the Northeastern Canadian Shield; Canadian Journal of Earth Sciences, vol. 9, no. 12 (December), pp. 1650-1669.
Jackson, G.D., 1971a. Operation Penny Highlands, south-central Baffin Island, Project 690061, in, Report of Activities, Part A: April to October, 1970, Precambrian Geology, Blackadar, R.G. (Ed. and Compiler); Geological Survey of Canada, Paper 71-1, Part A, pp. 138-140.
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: G.D. Jackson; P.H. Davenport
Entry Reviewed: No
Name Set: Lithostratigraphic Lexicon
LastChange: 06 Dec 2007