|Quadrangle map, 1:250,000-scale||NM|
|Quadrangle map, 1:63,360-scale||D-4|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||Sourdough Creek flows across the coastal plain about 2 to 3 miles east of Cape Douglas and enters a coastal lagoon about 6 miles southeast of Cape Douglas. Collier and others (1908, plate X) show the creek as auriferous over a 4- to 5-mile length in the Teller A-4 and Nome D-4 quadrangles. The location given is the approximate mid-point of the auriferous section in the Nome D-4 quadrangle. The creek has very little relief, and it is difficult to identify the exact location from the generalized map of Collier and others (1908).|
Geologic descriptionCollier and others (1908, plate X) describe Sourdough Creek as possibly auriferous over a 4- to 5-mile length on the Teller A-4 and Nome D-4 quadrangles. Collier panned one gold color on Sourdough Creek in 1901 (Collier and others, 1908, p. 220). In part on the basis of its location near the coastal plain and the stream's low relief, it is inferred that placer gold deposits would be of river-bar type with local enrichment in point bars and in inner curves of meanders, probably in association with black or ruby sand. Sourdough Creek probably reworks coastal plain deposits over its lower course, but its headwaters are in uplands underlain by a pelitic schist assemblage (Sainsbury, Hummel and Hudson, 1972).
|Geologic map unit||(-166.620154972927, 64.9835183208874)|
|Mineral deposit model||Placer Au (Cox and Singer, 1986; model 39a).|
|Mineral deposit model number||39a|
|Age of mineralization||Holocene.|
|Workings or exploration||Probably some exploration by pan or rocker before WWI.|
|Indication of production||None|
Collier, A.J., Hess, F.L., Smith, P.S., and Brooks, A.H., 1908, The gold placers of parts of Seward Peninsula, Alaska, including the Nome, Council, Kougarok, Port Clarence, and Goodhope precincts: U.S. Geological Survey Bulletin 328, 343 p.
|Reporters||C.C. Hawley and Travis L. Hudson|
|Last report date||10/22/1999|