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Occurrence Details


Occurrence Number
105C 044
Occurrence Name
Sears
Occurrence Type
Hard-rock
Status
Unknown


General Information

Deposit Type(s): Unknown
Location(s): 60.144170 N, -132.622220 W
NTS Mapsheet(s): 105C02
Location Comments: 1 Kilometres
Hand Samples Available at YGS: No

Capsule

Work History

Staked as Peg cl 1-15 (YA73207) in Apr/85 by E. Sears, who trenched in 1986 and 1987. J. Erwin and D. Gilbreath tied on a single Dome claim (YB14243) and Reo cl 1-3 (YB14244) in Jun/88.
The southeast side was restaked as Yen cl 1-2 (YB15485) by J. Yenne in Oct/88.

Capsule Geology

The area is located northeast of the Alaskan Highway and west of the pipeline corridor, approximately midway between Morley Bay and Nisutlin Bay on topographic map sheet 105C 02. Mulligan (1963) carried out reconnaissance 1:250 000 mapping from 1950 to 1953 for the Geological Survey of Canada. Gordey and Stevens (1994) of the Geological Survey re-mapped the area in the early 1990¿s. In the late 1990¿s, parts of adjoining topographic map sheets 105B and 104O were re-mapped as part of the Ancient Pacific Margin NATMAP program, a collaborative effect carried out by the Geological Survey of Canada, the British Columbia Geological Survey and the Yukon Geology Program (now known as the Yukon Geological Survey).
In 2006 Colpron of the Yukon Geological Survey released a geological compilation at 1:1 000 000 scale which included the occurrence area. Colpron¿s map tied together the various mapping programs carried out in the Yukon-Tanana and related terranes in Yukon and northern British Columbia.
According to Gordey and Stevens¿ geology map the occurrence is located south of Nisutlin Bay on the western margin of the Early Cretaceous Deadman Creek batholith. In the occurrence location the batholith probably intrudes schists, quartzites, marbles and possibly mafic volcanic rocks assigned to the Big Salmon Complex of the Yukon-Tanana Terrane. Although Colpron assigns rocks in the area to the Upper Devonian and Older Snowcap Assemblage, a basal unit of the Big Salmon Complex, it is quite possible that overlying mafic volcanic rocks assigned to the Upper Devonian to Lower Mississippian Finlayson Assemblage also outcrop in the area. Thus it appears that the batholith intrudes the lower half of the Big Salmon Complex.
No assessment or other exploration work appears to have ever been filed for this occurrence.

References

COLPRON, M. (compiler), 2006. Tectonic assemblage map of Yukon-Tanana and related terranes in Yukon and northern British Columbia (1:1 000 000 scale). Yukon Geological Survey, Open File 2006-1.

GORDEY, S.P. AND STEVENS, R.A. 1994. Preliminary interpretation of bedrock geology of the Teslin area (105C), southern Yukon. Geological Survey of Canada Open File 2886. (map scale 1:250 000).

MULLIGAN, R. 1963. Geology of Teslin map area, Yukon Territory (105C). Geological Survey of Canada, Memoir 326 and Map 1125A.

YUKON EXPLORATION 1985-1986, p. 144; 1988, p. 35.

Location Map

Last Updated: Sep 15, 2011

Work History

Year Work Type Comment
1987 Trenching
1986 Trenching

Regional Geology - Terrane

Group: Intermontane
Affinity: W Laurentia
Name: Yukon-Tanana
Realm: peri-Laurentian


Regional Geology - Bedrock

Supergroup:
Group/Suite: Teslin
Formation:
Member:
Terrane:
Period Max: Cretaceous
Age Max: 127 MA
Period Min: Cretaceous
Age Min: 122 MA
Rock Major: granite/granodiorite/quartz monzonite/quartz monzodiorite
Rock Minor: aplite/dykes
Reference: Gordey & Stevens (1994) - GSC OF 2886
Geological Unit (1M): EKT
Geological Unit (250K): EKgT

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