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The AAPG/Datapages Combined Publications Database
AAPG Bulletin
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Uranium (U), equivalent U (eU), and natural thermoluminescence (NTL, corrected for sensitivity variation) were analyzed on a large number of core samples from the Jackpile uranium deposits, New Mexico. These parameters were also analyzed on outcrop samples collected from the Jackpile sandstone which hosts these deposits. NTL, U, and eU show a positive correlation reflecting the secular equilibrium among U and its daughter products in these deposits. The U anomaly for the outcrop and core samples and the eU anomaly (from gamma log) are both areally restricted to within these deposits. However, NTL of the outcrop samples produced an anomaly several times larger in area than the U and eU anomalies. Further, the trend of this NTL anomaly parallels the sediment transport direc ion of the Jackpile sandstone.
The Jackpile uranium deposit is probably about 100 m.y. old. The NTL anomaly appears to be detectable long after (60 m.y.?) uranium was leached out from the present barren outcrop areas. Though this work was done on a sandstone uranium deposit, findings of this investigation are applicable to exploration of other types of uranium deposits.
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