地质学
油页岩
宾夕法尼亚语
泥炭
石炭纪
铀
考古
构造盆地
铀矿石
采矿工程
地球化学
铀矿
古生物学
地理
材料科学
冶金
摘要
Nonmarine carbonaceous rocks, including shales, coal, and peat, were tested at about 3 localities in California, Idaho, Nevada, Oregon, Utah, and Washington. Rocks ranging in age from Carboniferous to Quaternary were examine, although the principal attention was given middle and late Tertiary lignites of the northern part of the Great Basin. Most carbonaceous rocks examined contained essentially no uranium, but lignitic shales in the Goose Creek district, Idaho, a thin carbonaceous shale near Hagerman, Idaho, and a small peat deposit in Davis County, Utah contained more than 0.003 percent uranium.
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