Mineral Resources of Alaska: Report on Progress of Investigations in 1912 |
Common terms and phrases
Acad Alaska anticline appears basin beds Bulletin Carboniferous claim Coal Measures Coalgate quadrangle columella copper country rock County Creek at mouth Date of imprint deposits district Drainage area east fault feet figs figures Fork Fortymile River fossils genus geologic Girty gold gravel Green River Hoback Horizon and locality.-Wewoka Keyes Labarge Ridge limestone locality.-Wewoka formation lode Loxonema Macrocheilus marble Meek and Worthen millimeters mineral mining Mountain Nebraska Okla places Plate posterior Prince William Sound probably Productus prospect quartz region reported Rept rocks Salt River Range sandstone schist Seward Peninsula shale shear zone shell Side view Snake River Soleniscus species specimens Sphærodoma Spirifer square miles station stream sulphides surface Survey suture syncline thickness Thompson Plateau transverse tributary tunnel U. S. Geol Uinta County Upper Coal Measures valley valve vein ventral volutions Wewoka formation Wewoka quadrangle Willow Creek Wyoming
Popular passages
Page 210 - 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...
Page 298 - Reconnaissances in the Cape Nome and Norton Bay regions, Alaska, in 1900,
Page 151 - The ore consists mostly of stibnite and galena with other sulphides in smaller quantities. In the midst of the sulphides are numerous well-formed quartz crystals with uncorroded surfaces and random orientation. Several of the quartz crystals are more than an inch in length and a quarter of an inch in diameter. In the short incline from the open cut on this claim is a narrow stringer of nearly pure galena. This vein shows well-marked banded structure near the walls, the center of the vein being completely...
Page 210 - The standard miner's inch of water shall be equivalent or equal to 1§ cubic feet of water per minute, measured through any aperture or orifice.
Page 297 - Bulletin 520, 1912, pp. 211-218. 50 cents. *Water supply of the Fortymile, Seventymile, and Eagle districts, by EA Porter. In Bulletin 520, 1912, pp. 219-239. 50 cents. *Placer mining in the Fairbanks and Circle districts, by CE Ellsworth. In Bulletin 520, 1912, pp. 240-245. 50 cents.
Page 299 - Geologic investigations along the Canada-Alaska boundary, by AG Maddren. In Bulletin 520, 1912, pp. 297-314. 50 cents. *The Noatak-Kobuk region, by PS Smith. Bulletin 536, 1913, 160 pp. 40 cents. *The Koyukuk-Chandalar region, Alaska by AG Maddren. Bulletin 532, 1913, 119 pp.
Page 7 - The following table exhibits the progress of investigations in Alaska and the annual grant of funds since systematic surveys were begun in 1898. It should be noted that a varying amount is spent each year on special investigations that yield results which can not be expressed in terms of area.
Page 215 - ... 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 9 - RH Sargent continued the general supervision of the Alaska topographic surveys and map compilation, in addition to carrying on his own field work. EM Aten continued as office assistant to the geologist in charge and supervised the office work during Mr. Brooks's absence in the field.
Page 12 - A geologic reconnaissance of the Fairbanks quadrangle, Alaska, by LM Prindle, with a detailed description of the Fairbanks district, by LM Prindle and FJ Katz, and an account of lode mining near Fairbanks, by PS Smith. Bulletin 525, 1913, 220 pp. The Koyukuk-Chandalar region, Alaska, by AG Maddren. Bulletin 532, 1913, 119 pp. Price, 25 cents. A geologic reconnaissance of the Circle quadrangle, Alaska, by LM Prindle.