General Information
Secondary Commodities: coal
Deposit Type(s): Coal
Location(s): 68.1075 N, -138.306670 W
NTS Mapsheet(s): 117A03
Location Comments: 1 Kilometres
Hand Samples Available at YGS: No
Capsule
Work History
Reported by the GSC in 1985 but never staked.
Capsule Geology
At the headwaters of Johnson Creek, two seams of flat-lying lignite 3 m and 7 m thick are separated by a 2 m layer of white bentonite. They occur in an Oligocene sequence which is believed to correlate with the Kugmallit Formation of the Beaufort Sea (Norris, 1997). According to Cameron et al. (1986) the coal is very immature with vitrinite reflectances ranging from 0.15 to 0.20.
Reported by the GSC in 1985 but never staked.
Capsule Geology
At the headwaters of Johnson Creek, two seams of flat-lying lignite 3 m and 7 m thick are separated by a 2 m layer of white bentonite. They occur in an Oligocene sequence which is believed to correlate with the Kugmallit Formation of the Beaufort Sea (Norris, 1997). According to Cameron et al. (1986) the coal is very immature with vitrinite reflectances ranging from 0.15 to 0.20.
Location Map
Regional Geology - Terrane
Group: Northern Alaska
Affinity: N Laurentia
Name: Arctic Alaska (North Slope)
Realm: Arctic
Regional Geology - Bedrock
Supergroup:
Group/Suite:
Formation:
Member:
Terrane:
Period Max: Cretaceous
Age Max: 146 MA
Period Min: Cretaceous
Age Min: 100 MA
Rock Major: shale/siltstone/sandstone/coal
Rock Minor:
Reference: Norris (1981) - GSC Map 1516A
Geological Unit (1M): lKM
Geological Unit (250K): lKM3
Related References
| Number | Title | Page(s) | Document Type |
|---|---|---|---|
| YCI1994 | Yukon Coal Inventory | Report |
| Citations |
|---|
| Cameron, A.R., Norris, D.K. and Pratt, K.C., 1986. Rank and other compositional data on coals and carbonaceous shale of the Kayak Formation, northern Yukon Territory. In: Current Research, Part B., Geological Survey of Canada, Paper 86-1B, p. 665-670. |
| Norris, D.K. (ed), 1997. The geology, mineral and hydrocarbon potential of northern Yukon Territory and northwestern District of Mackenzie. Geological Survey of Canada, Bulletin 422. |
| Ricketts, B.D., 1985. A coal index of Yukon and District of Mackenzie, NWT. Geological Survey of Canada, Open File 1115. |
