General Information
Secondary Commodities: coal
Deposit Type(s): Coal
Location(s): 60.238060 N, -129.123610 W
NTS Mapsheet(s): 105A03
Location Comments: .5 Kilometres
Hand Samples Available at YGS: Yes
Capsule
Work History
The presence of this coal was first noted in 1887 by G.M. Dawson and was held under Lease 2948 in the late 1960s by Mr Peters. It was acquired in Jul/77 under Coal Exploration Licence #66 by Canex Placer L, which carried out mapping and sampling in 1977-78.
Capsule Geology
The thickest exposure of Tertiary sediments in the district occurs here. It consists of 80 m of moderately to steeply dipping, poorly indurated claystone, siltstone, sandstone and minor pebble conglomerate of Upper Paleocene or Lower Eocene age. Five seams between 0.4 and 2.1 m in thickness and several thinner coaly beds are present. The coal is of lignite A and B rank and contains abundant resin nodules, tree trunks in growth positions and up to 50% ash content. Together with an upward fining and thinning, these features suggest that the coal was formed in a point bar sequence and was subjected to frequent flooding and local development of crevasse splays.
The presence of this coal was first noted in 1887 by G.M. Dawson and was held under Lease 2948 in the late 1960s by Mr Peters. It was acquired in Jul/77 under Coal Exploration Licence #66 by Canex Placer L, which carried out mapping and sampling in 1977-78.
Capsule Geology
The thickest exposure of Tertiary sediments in the district occurs here. It consists of 80 m of moderately to steeply dipping, poorly indurated claystone, siltstone, sandstone and minor pebble conglomerate of Upper Paleocene or Lower Eocene age. Five seams between 0.4 and 2.1 m in thickness and several thinner coaly beds are present. The coal is of lignite A and B rank and contains abundant resin nodules, tree trunks in growth positions and up to 50% ash content. Together with an upward fining and thinning, these features suggest that the coal was formed in a point bar sequence and was subjected to frequent flooding and local development of crevasse splays.
Location Map
Last Updated: Mar 27, 2017
Work History
| Year | Work Type | Comment |
|---|---|---|
| 1977 | Geology: Bedrock Mapping | |
| 1977 | Other | |
| 1887 | Geology: Bedrock Mapping | First noted by G.M. Dawson of the GSC. |
Regional Geology - Terrane
Group: Ancestral North America
Affinity: W Laurentia
Name: Cassiar
Realm: Laurentia
Regional Geology - Bedrock
Supergroup:
Group/Suite: Ross?
Formation:
Member:
Terrane:
Period Max: Paleogene
Age Max: 58 MA
Period Min: Paleogene
Age Min: 48 MA
Rock Major: conglomerate, shale, coal
Rock Minor:
Reference: Mortensen & Murphy (2005) - YGS OF 2005-10
Geological Unit (1M): lTR
Geological Unit (250K): lTR3
Assessment Reports that overlap occurrence
| Report Number | Year | Title | Worktypes | Holes Drilled | Meters Drilled |
|---|---|---|---|---|---|
| 093550 | 1996 | Report on a Helicopter-Borne Electromagnetic and Magnetic Survey | Electromagnetic - Airborne Geophysics, Magnetic - Airborne Geophysics |
Related References
| Number | Title | Page(s) | Document Type |
|---|---|---|---|
| YCI1994 | Yukon Coal Inventory | Report |
| Citations |
|---|
| Hughes, J.D. and Long, D.G.F., 1980. Geology and coal resource potential of Early Tertiary Strata along Tintina Trench, Yukon Territory. Geological Survey of Canada, Paper 79-32. |
| Lord, C.S., 1944. Geological reconnaissance along the Alaska hwy between Watson Lake and Teslin River, Yukon and British Columbia. Geological Survey of Canada, Paper 44-25, p. 19. |
