Geologic Reconnaissance in the Matanuska and Talkeetna Basins, AlaskaU.S. Government Printing Office, 1907 - 71 sayfa |
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100 sonuçtan 1-5 arası sonuçlar
Sayfa 25
... inches and ranges up to 8 inches . Greenstone porphyries form the principal material of the conglomerate , with some quartz porphyry and very rarely some granite and vein quartz . The matrix of the pebbles is a grit . a Mendenhall ...
... inches and ranges up to 8 inches . Greenstone porphyries form the principal material of the conglomerate , with some quartz porphyry and very rarely some granite and vein quartz . The matrix of the pebbles is a grit . a Mendenhall ...
Sayfa 27
... inches thick . The igneous sheet overlying the shales on Kings Creek at the coal prospects differs petrographically from the prevailing diabase in- trusives of the region . It carries porphyritic feldspars in a light- colored granular ...
... inches thick . The igneous sheet overlying the shales on Kings Creek at the coal prospects differs petrographically from the prevailing diabase in- trusives of the region . It carries porphyritic feldspars in a light- colored granular ...
Sayfa 45
... inches thick in tunnel A is undoubtedly the same as the bed 17 feet 3 inches thick in tunnel B. N SONORA SANTA ROSA Xw 八 टाउ ****** Chickaloon Creek SCALE IN FEET 500 1000 1500 Fig . 2. - Sketch showing location of Chickaloon ...
... inches thick in tunnel A is undoubtedly the same as the bed 17 feet 3 inches thick in tunnel B. N SONORA SANTA ROSA Xw 八 टाउ ****** Chickaloon Creek SCALE IN FEET 500 1000 1500 Fig . 2. - Sketch showing location of Chickaloon ...
Sayfa 66
... inches thick , side boards 1 inch thick , and the frames are 3 - inch square timbers . The flume is 27 feet wide and 30 feet deep by inside measurements . Block riffles are used . A grade of 54 inches to 12 feet is maintained . The ...
... inches thick , side boards 1 inch thick , and the frames are 3 - inch square timbers . The flume is 27 feet wide and 30 feet deep by inside measurements . Block riffles are used . A grade of 54 inches to 12 feet is maintained . The ...
Sayfa 67
... inches of solid chalcopyrite and 18 inches of quartz irregu- larly cut by stringers of ore . Graphitic gouge matter occurs near the ledge . From the foregoing description it appears probable that the deposit occupies a mineralized shear ...
... inches of solid chalcopyrite and 18 inches of quartz irregu- larly cut by stringers of ore . Graphitic gouge matter occurs near the ledge . From the foregoing description it appears probable that the deposit occupies a mineralized shear ...
Sık kullanılan terimler ve kelime öbekleri
Alaska andesite Anvil Creek basin beach beam bed rock bench Bendeleben Mountains bowlders Brooks Bull Cape Nome cement cent channel Chickaloon Chickaloon Creek chloritic claims clay coal coarse coastal plain Collier concrete conglomerate contain creek bed district ditch east elevation erosion feet thick Geological Survey geology Glacier gold placers granite graphitic gravel greenstone Gulch inches intrusive Iron Creek Jurassic Kenai Kigluaik Mountains Knik Knik River Kougarok Kuzitrin Kuzitrin River limestone lower Matanuska Matanuska River material mica schist miles mineral mining Moffit mouth muck Niukluk Niukluk River Nome and Norton Nome group Nome River Norton Bay Norton Bay regions nuggets occur Ophir Creek pay streak pebbles placer gold Port Clarence probably reconnaissance reported sand sandstones schist Seward Peninsula Shale slates slopes sluice boxes special publication stream surface Susitna Talkeetna Mountains test pieces tributary U. S. Geol upper valley
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Sayfa 252 - ... of places. One of these is a mineralized belt 12 feet wide, which strikes northwest. In this impregnated zone vein quartz is associated with pyrite. It is reported to assay as high as $8 to the ton, but a specimen obtained by Mr. Collier showed only traces of gold and silver.
Sayfa 23 - ... no objection to the holding of orderly meetings for the discussion of ordinary business affairs, in any meeting held for the purpose of acting in district affairs no person is entitled to participate excepting claim holders. Any attempt so to participate by other persons is illegal, and the proper steps will be taken to prevent it. Decisions and orders of the civil courts will be supported by the entire power and authority of the United States troops. No persons will be allowed to carry firearms,...