Bulletin of the United States Geological SurveyThe Survey., 1913 |
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abundant adit Alaska alluvial deposits amount arsenopyrite auriferous average basin bedrock beds biotite Birch Creek Birch Creek schist Bulletin cents Chatanika Chena claim Cleary Creek conglomerate country rock Creek valley depth Devonian dikes Drainage area drift dump box Eldorado elevation Ester Creek Fairbanks Creek Fairbanks district Fairbanks quadrangle fault feldspar Flats Fortymile fossils garnet geologic gold placers Goldstream granite hoisting igneous rocks inches intrusive rocks iron pyrites July L. M. Prindle limestone localities lode masses material mill mineralization mining mouth muck occurs Ordovician Paleozoic Pedro pits placer gold places porphyritic portion probably productive gravels productive ground prospecting quartz diorite quartz veins quartzite quartzite schist Rampart reported ridge schist shaft slope sluice square miles stibnite stringers sulphides sunk surface Survey Tanana River tenor terrace deposits thawing thickness tier tion tributary tunnel U. S. Geol upper White Mountains width Yukon Yukon-Tanana region
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Seite 133 - Second-feet per square mile" is the average number of cubic feet of water flowing per second from each square mile of area drained, on the assumption that the run-off is distributed uniformly both as regards time and area. "Run-off in inches...
Seite 133 - Run-off in inches" is the depth to which the drainage area would be covered if all the water flowing from it in a given period were conserved and uniformly distributed on the surface. It is used for comparing run-off with rainfall, which is usually expressed in depth in inches. "Acre-foot...
Seite iv - Bulletin 498, 1912, 82 pp. *The Chitina district, by FH Moffit. In Bulletin 520, 1912, pp. 105-107. 50 cents. *Gold deposits near Valdez, by AH Brooks. In Bulletin 520, 1912, pp. 108-130. 50 cents. Coastal glaciers of Prince William Sound and Kenai Peninsula, Alaska, by US Grant and DF Higgins. Bulletin 526, 1913, 75 pp.
Seite vi - Occurrence of wolframite and cassiterite in the gold placers of Deadwood Creek, Birch Creek district, by BL Johnson. In Bulletin 442, 1910, pp. 246-250.
Seite 133 - The standard miner's inch of water shall be equivalent or equal to 1 J cubic feet of water per minute, measured through any aperture or orifice.
Seite 133 - Runoff in inches (in.) shows the depth to which the drainage area would be covered if all the runoff for a given time period were uniformly distributed on it.
Seite vi - Placer mining in the Fortymile and Seventymile River districts, by EA Porter. In "Bulletin 520, 1912, pp. 211-218. 50 cents. Placer mining in the Fairbanks and Circle districts, by CE Ellsworth. In "Bulletin 520, 1912, pp. 240-245. 50 cents. Gold placers between Woodchopper and Fourth of July Creeks, upper Yukon River, by LM Prindle and JB Mertie, jr.
Seite iv - A geologic reconnaissance of the Iliamna region, Alaska, by GC Martin and FJ Katz. Bulletin 485, 1912, 138 pp.
Seite vi - Bulletin 501, 1912, 162 pp. A geologic reconnaissance of a part of the Rampart quadrangle, Alaska, by HM Eakin.
Seite vi - The Fairbanks gold-placer region, by LM Prindle and FJ Katz. In Bulletin 379, 1909, pp. 181-200.