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25 feet 30 feet Alaska Back azimuth bears beds bluff bridge Cape carbonate Church clay cleavage coal Coast corner secs County Creek crossroads deposits distant feet east feet north feet northwest feet south feet southeast feet west fence fence post field forks of road formation four corners Geographic positions Geol geology gravels ground hill inches iron post stamped Lake Latitude lignite limestone Longitude Lower Meters mile north mile south miles east miles northeast miles west Mill Mountain northeast northeast corner occur opening post stamped Prim probably quadrangle quarry quartz Railroad Railway region reported River road crossing rock sandstone seam sericite shale shows side slate southwest Station mark stone stream strike surface Survey tablet telephone pole track Trav tree triangulation triangulation station United Upper Valley
Seite 36 - The geology and mineral resources of a portion of the Copper River district, Alaska.
Seite 161 - The serial publications of the United States Geological Survey consist of (1 ) Annual Reports, (2) Monographs, (3) Professional Papers, (4) .Bulletins, (5) Mineral Resources, (6) Water-Supply and Irrigation Papers, (7) Topographic Atlas of United States— folios and separate sheets thereof, (8) Geologic Atlas of the United States — folios thereof.
Seite 36 - WJ Peters. Koyukuk and Chandlar rivers, portions of; scale, 1:625000. Contained in "Preliminary report of a reconnaissance along the Chandlar and Koyukuk rivers, Alaska, in 1899.
Seite 103 - ... The slate from this quarry is very dark gray with a greenish hue, and to' the unaided eye has a granular sparkling crystalline texture and a roughish, but very lustrous, cleavage surface. It is slightly graphitic (or carbonaceous). The sawn edge shows pyrite. It contains rare particles of magnetite, does not effervesce in cold dilute hydrochloric acid, and is very sonorous. Under the microscope the...
Seite 237 - Dictionary of altitudes in United States, by Henry Gannett. 1884. 325 pp. (Out of stock; see Bulletin Ш1.) 6. Elevations in Dominion of Canada, by JW Spencer. 1884. 43 pp. (Out of stock.) 13. Boundaries of United States and of the several States and Territories, with historical sketch...