Unit Name: Akie formation
Unit Type: Lithostratigraphic
Usage: Currently in use
Age Interval: Devonian - Mississippian (416 - 318.1 ma)
Province/Territory: British Columbia
Originator: Jefferson et al., 1983; Pigage, 1986; and MacIntyre, 1992.
Central and southern Kechika trough (Paradis et al., 1998).
The term "Akie" is used to designate nonsiliceous shales (Paradis et al., 1998).
The Akie formation is a subdivision of the Earn Group. The Warneford and Akie formations interfinger with each other and with the Gunsteel formation. The base of the Earn Group is diachronous, with clastic sediments progressively lapping on from the Kechika trough eastward onto MacDonald platform (MacIntyre, 1992) (Paradis et al., 1998).
Jefferson et al. (1983), Pigage (1986), and MacIntyre (1992) have subdivided the Earn Group into three informal formations or lithofacies divisions, Gunflint, Akie, and Warneford (Paradis et al., 1998).
Paradis et al., 1996.
Jefferson, C.W., Kilby, D.B., Pigage, L.C., and Roberts, W.J., 1983. The Cirque barite-zinc-lead deposits, northeastern British Columbia; in, Sediment-Hosted Stratiform Lead-Zinc Deposits, edited by D.F. Sangster, Mineralogical Association of Canada, Short Course Handbook, v. 9, p. 121-140.
MacIntyre, D.G. 1998. Geology, geochemistry and mineral deposits of the Akie River Area, northeast British Columbia; British Columbia Ministry of Energy and Mines, Bulletin 103, pp. 1-91.
MacIntyre, D.G., 1992. Geological setting and genesis of sedimentary exhalative barite and barite-sulfide deposits, Gataga District, northeastern British Columbia; Exploration and Mining Geology, v. 1, p. 1-20.
Paradis, S., Nelson, J.L., and Irwin, S.E.B., 1996. Conodont biostratigraphy of the Driftpile stratiform Ba-Zn-Pb deposit, Gataga district, northeastern British Columbia; in Current Research 1996-E; Geological Survey of Canada, p. 55-64.
Paradis, S., Nelson, J.L., and Irwin, S.E.B., 1998. Age constraints on the Devonian shale-hosted Zn-Pb-Ba deposits, Gataga District, northeastern British Columbia, Canada; Economic Geology, vol. 93, pp. 184-200.
Pigage, L.C., 1986. Geology of the Cirque barite-zinc-lead-silver deposits, northeastern British Columbia; in Mineral Deposits of Northern Cordillera, (ed.) J. Morin; Canadian Mining and Metallurgical Bulletin, Special Volume 37, p. 71-86.
Contributor: Michael Pashulka
Entry Reviewed: No
Name Set: Lithostratigraphic Lexicon
LastChange: 03 May 2011