|Quadrangle map, 1:250,000-scale||SO|
|Quadrangle map, 1:63,360-scale||D-5|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||Sunshine Creek is a north tributary to Canyon Creek (SO083). The mouth of Sunshine Creek is 1.2 miles upstream from the confluence of Canyon Creek and the Casadepaga River. This is locality 52 of Cobb (1972, MF 445; 1978, OF 78-181).|
Geologic descriptionThe lower part of Sunshine Creek crosses benches of Canyon Creek; Sainsbury and others (1972, OFR 511) show placer tailings along the lower 0.5 mile of the creek. There are reports of placer mining here in 1918 and 1934 (Cobb, 1978, OF 78-181). Smith (1910) notes that placers along north tributaries of Canyon Creek derive ther gold from reworking the bench gravels. Bedrock of the area includes a pelitic schist of possible Cambrian or Precambrian age in contact with a lower Paleozoic metasedimentary assemblage to the west in the headwaters of Canyon Creek (Till and others, 1986).
|Geologic map unit||(-164.36361915176, 64.8582587680804)|
|Mineral deposit model||Placer Au-PGE (Cox and Singer, 1986; model 39a).|
|Mineral deposit model number||39a|
|Age of mineralization||Quaternary; the numerous incised terraces along the Casadepaga River indicate that more than one cycle of erosion and deposition has developed placer deposits in the area. The low elevations between 170 and 270 feet along the first 11 miles of the river, suggest that Quaternary sea level fluctuations could have influenced placer development.|
|Workings or exploration||Small-scale open-cut placer mining took place intermittently from at least 1918 to 1934 along the lower 0.5 mile of the creek.|
|Indication of production||Yes; small|
Cobb, E.H., 1972, Metallic mineral resources map of the Solomon quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-445, 1 sheet, scale 1:250,000.
Cobb, E.H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Solomon quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-181, 185 p.
Sainsbury, C.L., Hudson, T.L., Ewing, R., and Marsh, W.R., 1972, Reconnaissance geologic maps of the Solomon D-5 and C-5 quadrangles, Seward Peninsula, Alaska: U.S. Geological Survey Open-File Report 72-324, 12 p., 2 sheets, scale 1:63,360.
Smith, P.S., 1910, Geology and mineral resources of the Solomon and Casadepaga quadrangles, Seward Peninsula, Alaska: U.S. Geological Survey Bulletin 433, 234 p.
|Reporters||Travis L. Hudson (Applied Geology)|
|Last report date||8/19/1999|