Abstract
IN the Cambrian black shales of the Oslo area, there is a considerable concentration of uranium, analyses values ranging from 25 to 180 gm./ton. (These and the following uranium analyses were made at the Norwegian Defence Research Institution, which has given permission for their publication.)
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Strøm, K. M., Skr. Vidensk.-Akad. Oslo, 1, 7 (1936)
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STRØM, K. A Concentration of Uranium in Black Muds. Nature 162, 922 (1948). https://doi.org/10.1038/162922a0
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DOI: https://doi.org/10.1038/162922a0
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