 | 1906 - 1058 Seiten
...Bear and the Overland Relief Kxneilition: Treail. Dept. Doc. No. 2101, 1899, p. 71. frSchmder. f. C., A reconnaissance in northern Alaska: Prof. Paper US Geol. Survey No. 20, pp. 109-114. TOPOGRAPHIC AND GKOl.OGIC RKCONNA1SSANCK MAP OF THE CAI'K LISBlTtNE HFJOION WV .ARTHfR... | |
 | Philip Creveling Warman - 1903 - 728 Seiten
...Survey, ft. 2. \,\i. 441-186. It Scfimiicr. K. ('.. A reconnaissance i» uiirthern AIn.-k«: Prof. Puper US Geol. Survey No. 20 (in From comparison with similar...the upper Koyukuk are probably of Upper Cretaceous age." The coal bed at Tramway Bar is described as having a thickness of nearly 12 feet, the middle... | |
 | Geological Survey (U.S.) - 1906 - 432 Seiten
...Frindle, LM Gold Placers of Fortymlle, Birch Creek, and Fairbanks regions. Bull. US Geol. Survey No. 251. Schrader, FC A Reconnaissance in Northern Alaska. Prof. Paper US Geol. Survey No. 20. Collier, Arthur J. A Reconnaissance in Northwestern Part of the Seward Peninsula. Prof. Paper U. 8.... | |
 | Geological Survey (U.S.), Alfred Hulse Brooks - 1908 - 322 Seiten
...and Koyukuk rivers in 1899: Twenty-first Ann. Rept. IT. S. Geol. Survey, pt. 2, 1900, pp. 471-485. 6 A reconnaissance In northern Alaska : Prof. Paper US Geol. Survey No. 20, 1904. probably somewhat less than that of 1906. It is estimated to have a value of about $100,000.... | |
 | Alfred Geddes Maddren - 1913 - 488 Seiten
...and Koyukuk rivers, Alaska, in 1890 : Twenty-first Ann. Rept. US Geol. Survey, pt. 2, 1900, p. 475. 1 Schrader, FC, A reconnaissance in northern Alaska : Prof. Paper US Geol. Survey No. 20, 1004. pp. 56-68. from the Ska jit formation in place include the remains of a brachiopod, which indicates... | |
 | 1913 - 632 Seiten
...Koyukuk rivers, Alaska, in 1899: Twenty-first Ann. Rept. US Geol. Survey, pt. 2, 1900, pp. 441-486. 1 Schrader, FC, A reconnaissance in northern Alaska: Prof. Paper US Geol. Survey No. 20, 1904, 139 pp., maps and illustrations. » Mendenhall, WC, Reconnaissance from Fort Hamlln to Kotzebuo... | |
 | Philip Sidney Smith - 1913 - 620 Seiten
...Pleistocene deposits of the John River region. The term "till," i Mendenhall, WC, op. clt., pp. 46-47. >Schrader, FC, A reconnaissance in northern Alaska: Prof. Paper US Geol. Survey No. 20,1004, pp. 8M8. used in his description, is probably equivalent to the term "outwash deposit " used... | |
 | 1907 - 1024 Seiten
...cutter Bear and the Overland Keu» Expedition: Treas. Dept. Doe. No. 2101. 1899, p. 71. A-.Sotirader, FC, A reconnaissance in northern Alaska: Prof. Paper US Geol. Survey No. 20, PP109-114. I87'00' lee'oo TOPOGHAPHIC AND GEOLOGIC RECONNAISSANl'K MAP OK THE 'K usnrHNK REGION tTf... | |
 | Geological Survey (U.S.) - 1906 - 428 Seiten
...Placers of Fortymile, Birch Creek, and Fairbanks regions. Bull. US Geol. Survey No. 251. "Schroder, FC A Reconnaissance in Northern Alaska. Prof. Paper US Geol. Survey No. 20. "Collier, Arthur J. A Reconnaissance in Northwestern Part of the Seward Peninsula. Prof. Paper U. 8.... | |
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Schrader, FC, A reconnaissance In northern Alaska: Prof. Paper US Geol. Survey No. 20... 