Bulletin of the United States Geological SurveyThe Survey., 1914 - Geology |
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A. H. Brooks Alaska arsenopyrite auriferous barite basin beach bedrock beds bowlders Bulletin calcite cents chalcopyrite Chisana claims coal conglomerate Copper River country rock crosscut deposits dikes diorite distance dredge drift east elevation Fairbanks Fiord fissure galena geologic glacial Glacier gold placers gouge granite gravels graywacke greenstone Gulch horsepower inches included Inlet intrusive Island Kenai Peninsula limestone located lode lower marble Matanuska Valley mill mineral resources Miocene Mountains mouth Nenana River Nome occur open cuts operated outcrop Passage Canal placer gold placer mining plants Port Wells district Prince William Sound probably production prospecting pyrite quartz veins reconnaissance region reported ridge Robinson Mountains sandstones schist Seward Peninsula shaft Shale shore slate southeastern Alaska stibnite stream strike sulphides summer surface Survey Bull Susitna River Tanana thick timber tributary U. S. Geol upper Valdez White River width winter Yakataga Yukon
Popular passages
Page 157 - 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 tune and area. "Run-off in inches...
Page 158 - ... square mile equals 2.59 square kilometers. 1 cubic foot equals 0.0283 cubic meter. 1 cubic foot of water weighs 62.5 pounds. 1 cubic meter per minute equals 0.5886 second-foot. 1 horsepower equals 550 foot-pounds per second. 1 horsepower equals 76.0 kilogram-meters per second. 1 horsepower equals 746 watts. 1 horsepower equals 1 second-foot falling 8.80 feet.
Page iv - Placer mining in the Yukon-Tanana region, by CE Ellsworth. In Bulletin 442, 1910, pp. 230-245. 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.
Page 413 - In southeastern Alaska, by Adolph Knopf. In Bulletin 480, 1911, pp. 94-102. The Eagle River region, by Adolph Knopf. In Bulletin 480, 1911, pp. 103-111. The Eagle River region, southeastern Alaska, by Adolph Knopf. Bulletin 502, 1912, 61 pp. The SItka mining district, Alaska, by Adolph Knopf. Bulletin 504, 1912, 32 pp. The earthquakes at Yakutat Bay, Alaska, In September, 1899, by RS Tarr and Lawrence Martin, with a preface by GK Gilbert Professional Paper -69, 1912, 135 pp.
Page 48 - President is hereby authorized and empowered to employ such officers, agents, or agencies as may in his discretion be necessary to enable him to carry out the purposes herein specified, and to authorize and require such officers, agents, or agencies to perform any and all of the duties imposed upon him by the provisions hereof.
Page 48 - In connection with carrying out the authority under the Alaska Railroad Act "to fix, change, or modify rates for the transportation of passengers and property...
Page 7 - ... 180 square miles. Much of the time of the geologists was devoted to special field problems, the results of which can not be expressed areally.
Page 158 - ... 1 acre equals 43,560 square feet. 1 acre equals 209 feet square, nearly. 1 square mile equals 2.59 square kilometers.
Page vii - ... Bulletin No. 259. 1905, pp. 172-185. Geology and coal resources of Cape Lisburne region, Alaska, by AJ Collier. Bulletin No. 278, 1906, 54 pp. Topographic maps. Fort Yukon to Kotzebue Sound, reconnaissance map of; scale, 1:1200000: by DL Reaburn.
Page 157 - The accuracy column in the monthly discharge table does not apply to the maximum or minimum nor to any individual day, but to the monthly mean. It is based on the accuracy of the rating, the probable reliability of the observer, and knowledge of local conditions. In this column A indicates that the mean monthly flow is probably accurate within 5 per cent; B, within 10 per cent; C, within 15 per cent; D, within 25 per cent.