Analytical data of geologic obsidians from Japan by INAA using middle- and long-lived nuclides

Abstract

This paper reports the results of instrumental neutron activation analysis (INAA) on 3,704 obsidian samples, taking the measurements of 23 elements. The results are summarized, combining the results of INAA conducted earlier by Ambiru et al. on 1,444 samples. The samples for these analyses are taken from seventy obsidian sources located at various places of Japan.