Unit Name: Lisburne Group
Unit Type: Lithostratigraphic
Usage: Currently in use
Age Interval: Mississippian - Middle Pennsylvanian (359.2 - 307.2 ma)
Age Justification: Brachiopods, corals, bryozoans and Foraminifera.
Province/Territory: Yukon Territory; Alaska
Originator: Bowsher and Dutro, 1957.
Shainin Lake area and Wahoo Lake area, central and eastern Brooks Range (for specific localities see component formations).
The group is present in the central and eastern Brooks Range, Alaska and the British, Barns and Buckland mountains in the Yukon. The Wachsmuth Fm disappears west of the Canning River, Alaska and is not present in the Yukon.
Limestone. The group is composed of three formations described in ascending order: 1) Wachsmuth Fm, 375 m (1,230 ft), limestone, dolomite and chert, subdivisible; 2) Alapah Fm, 296 m (970 ft), limestone with zones of shale, chert clastic, silicified and oolitic limestone, unconformable on the Wachsmuth; and 3) Wahoo Fm, 419 m (1,375 ft), coarse-grained limestone and sublithographic and lithographic limestone.
The Lisburne Gp is unconformably overlain by the Siksikpuk and Sadlerochit formations.
A.K. Armstrong, 1974; A.K. Armstrong and Mamet, 1974, 1978; A.K. Armstrong et al., 1970; Bamber, 1972; Bamber and Waterhouse, 1971; Bowsher and Dutro, 1957; Brosgé et al., 1962; Douglas et al., 1963; Lawrence, 1973, Leffingwell, 1919; Miall, 1973; Mountjoy, 1967b; Nassichuk and Bamber, 1978, A.W. Norris et al., 1963; Tailleur et al., 1967; Yochelson and Dutro, 1960; Ziegler, 1967.
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; E.W. Bamber
Entry Reviewed: Yes
Name Set: Lithostratigraphic Lexicon
LastChange: 29 Apr 2003