Unit Name: Dome Creek Formation
Unit Type: Lithostratigraphic
Rank: Formation
Status: Formal
Usage: Currently in use
Age Interval: Early Cambrian - Late Cambrian (542 - 488.3 ma)
Province/Territory: British Columbia
Originator: Campbell, R.B. et al., 1973.
Type Locality:
Headwaters of Dome Creek, northern Cariboo Mountains (53 deg 35'N, 121 deg 01'W), British Columbia.
Distribution:
The Dome Creek Formation is restricted to an area n the northern Cariboo Mountains between latitudes 53 deg 28'N and 53 deg 40'N. It is 1738 m (5701 ft) thick at its type section in Dome Creek, although minor thrust repetition may be present.
Lithology:
The Dome Creek Formation consists mainly of dark grey to black shale, grading upward into yellowish weathering banded siltstone and silty argillite overlain by black siliceous argillite with dark grey shale. It is recessive due to its shale content and forms an incompetent detachment horizon. The Dome Creek Formation contains late Early Cambrian trilobite fauna in its lower part and Late Cambrian trilobite fauna in its upper part.
Relationship:
The Dome Creek Formation is in gradational contact with the underlying Mural Formation. It is overlain at its type section by quartzites of the Yanks Peak Formation that are in fault contact with the Dome Creek Formation.
Other Citations:
Campbell et al., 1973; Young, 1979.
Source: CSPG Lexicon of Canadian Stratigraphy, Volume 4, western Canada, including eastern British Columbia, Alberta, Saskatchewan and southern Manitoba; D.J. Glass (editor)
Contributor: M.R. McDonough
Entry Reviewed: Yes
Name Set: Lithostratigraphic Lexicon
LastChange: 29 Apr 2003