Unit Name: Jungle Creek Formation
Unit Type: Lithostratigraphic
Rank: Formation
Status: Formal
Usage: Currently in use
Age Interval: ? Orenburgian - early Artinskian (303.4 - 275.6 ma)
Age Justification: Brachiopods, ammonoids, Foraminifera and trilobites.
Province/Territory: Yukon Territory

Originator: Bamber and Waterhouse, 1971.

Type Locality:
Tatonduk River approximately 4.8 km (3 mi) east of the Yukon-Alaska border (64 deg 58'30"N, 140 deg 54'W).

Lithology:
It is a recessive, medium to dark brownish-grey weathering sequence of skeletal partly conglomeratic limestone, micritic and spicular limestone, calcareous sandstone and siltstone. It is divisible into: 1) a lower 139 m (450 ft) thick moderately resistant, calcareous chert pebble conglomerate, calcareous sandstone and silty calcareous shale with minor micritic skeletal limestone unit; and 2) an upper 288 m (945 ft) thick cherty, calcareous mudstone grading into and interbedded with silty cherty micritic and spicular limestone with rare beds of silty, calcareous shale, bryozoan-echinoderm limestone and calcareous sandstone units.

Relationship:
The lower contact with the Ettrain Fm corresponds with the lowest conglomerate sandstone unit. The boundary is diachronous, with the interbedded carbonates and terrigenous clastics of the Jungle Creek Fm equivalent to the upper part of the Ettrain Fm. It is conformably and gradationally overlain by the Tahkandit Fm.

Other Citations:
Bamber, 1972; Bamber and Waterhouse, 1971; Gorveatt and Nelson, 1975; Graham, 1973; Miall, 1973; Nassichuk and Bamber, 1978; Ormiston, 1973.

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