 From the meager data at hand it is perhaps unsafe to venture on generalizations, yet it is probable that the quartz veins are genetically related to the intrusion of the post-Carboniferous quartz diorites and that, therefore, the intruded areas are those...  Bulletin of the United States Geological Survey - Seite 170von Geological Survey (U.S.) - 1909Vollansicht - Über dieses Buch
 | Geological Survey (U.S.), Alfred Hulse Brooks - 1909 - 858 Seiten
...region of some promise has been discovered in the Nutzotin Mountains, near the international boundary, and that as yet it has been but imperfectly explored...summer in 1908, produced during the year approximately $9,200,000 in placer gold. The importance of the region and the demand for accurate maps by miners,... | |
 | 1910 - 872 Seiten
...throughout the Nutzotin Mountains at a number of localities, especially along their northeastern flanjjs. Brooks has mapped a large area of granular intrusive...may be prosecuted with the most hope of success. The important facts to be borne in mind by prospectors in the Nabesna- White district may be summarized... | |
 | Frank Wigglesworth Clarke - 1915 - 858 Seiten
...known to occur throughout the Nutzotin Mountains at a number of localities, especially along their northeastern flanks. Brooks has mapped a large area...quartz may be prosecuted with the most hope of success. Though copper deposits have been known in this district since 1899 and gold since 1902 neither have... | |
 | 1909 - 770 Seiten
...of localities, especially along the northeastern flanks. Brooks has mapped a large area of gramilar intrusive on the lower Nabesna. It is probable that...of success. THE FAIRBANKS GOLD PLACER REGION. By LM PKINDLE and FJ KATZ. INTRODUCTORY STATEMENT. The Fairbanks region, notwithstanding strikes of the miners... | |
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