Bulletin of the United States Geological SurveyThe Survey., 1913 - Geology |
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15 cents 50 cents A. H. Brooks Alaska appear basin bedrock belt Bettles River Birch Creek schist bowlders Bulletin 379 Bulletin 442 Bulletin 520 canyon Chandalar Lake Chandalar River Chandalar Valley Coldfoot country rock Creek valley Crooked Creek dike dioritic drainage Endicott Mountains extend F. H. Moffit feet above sea flows G. C. Martin geologic glacial Gold Creek gold placers gold-bearing gravels granitic gulches Hammond Creek headwaters Hodzana highland intrusive rocks John River Kanuti River Koyukuk district Koyukuk River Koyukuk Valley Koyukuk-Chandalar region L. M. Prindle limestones Linda Creek lower metamorphism Middle Fork miles long mineral resources mouth Myrtle Creek Nolan Creek North Fork occur P. S. Smith placer gold placer mining prospecting quartz quartzite reconnaissance schistose Schrader sediments Seward Peninsula shallow side silts Slate Creek slopes South Fork surface topographic Tramway Bar tributary unconsolidated deposits upper veins Vermont Creek Wiseman Creek Yukon Flats
Popular passages
Page 121 - Geology and mineral resources of Controller Bay region, by GC Martin. Bulletin 335, 1908, 141 pp. *Notes on copper prospects of Prince William Sound, by FH Moffit. In Bulletin 345, 1908, pp. 176-178. 45 cents. *Mineral resources of the Kotsina and Chitina valleys, Copper River region, by FH Moffit and AG Maddren.
Page 121 - 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.
Page 121 - Bulletin 446, 1911, 58 pp. Mining in southeastern Alaska, by Adolph Knopf. In Bulletin 480, 1911, pp. 94-102. 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.
Page 109 - Montreal river. We have made a careful detailed survey of this beautiful sheet of water. It measures about thirty miles from north to south and the same from east to west, and has had until recently no fewer than four outlets, one towards each of the cardinal points. The east and west outlets have dried up, either from the deepening of the other two or from a very slight elevation on either side of the north and south axis of the lake. Some time ago the northern outlet was...