Bunker, C.M., Bush, C.A., and Forbes, R.B., 1973, Radioelement distribution in the basement complex of the Yukon-Tanana upland, Eielson deep test hole, Alaska: U.S. Geological Survey, Journal of Research v. 1, no. 6, p. 659-663.
Uranium, thorium, and potassium contents were determined in 94 samples of drill cuttings from a 9,774-foot-deep exploratory hole drilled entirely in crystalline schists of the basement complex of the Yukon-Tanana Upland. The data indicate two distinctively different rock types and reflect differences in the calcite content of the rock. Zones of anomalously high concentrations of the radioelements probably reflect the effects of the emplacement of the nearby Eielson pluton.
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