Abstract
A METHOD for direct measurement of ionium (thorium-230) has been described in a previous communication1. Ionium was measured in samples of red clay from the Central Pacific Ocean raised by the Swedish Deep-Sea Expedition (1947–48).
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References
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PICCIOTTO, E., WILGAIN, S. Thorium Determination in Deep-Sea Sediments. Nature 173, 632–633 (1954). https://doi.org/10.1038/173632a0
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DOI: https://doi.org/10.1038/173632a0
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