We determined chemical compositions like abundance of major and trace elements, Sr and Nd isotope compositions for two tektites from the Thailand and Vietnam. Their chemical compositions are similar to each other, and seem to be similar to those of PA...
We determined chemical compositions like abundance of major and trace elements, Sr and Nd isotope compositions for two tektites from the Thailand and Vietnam. Their chemical compositions are similar to each other, and seem to be similar to those of PAAS (Post Archean Australian Shale) rather than upper continental crust. In particular, primitive mantle-normalized spider diagrams and chondrite-normalized REE patterns for two tektites are the same, suggesting that they might be derived from the same source material. The 87Sr/86Sr and 143Nd/144Nd ratios from Thailand tektite are 0.718870±0.000008 (2σm) and 0.512024±0.000012 (2σm), respectively, and those from Vietnam are 0.717022±0.000008 (2σm) and 0.511986±0.000013 (2σm), respectively. The 87Sr/86Sr and 143Nd/144Nd ratios from Thailand tektite are slightly enriched than those of Vietnam tektite. 87Sr/86Sr ratios from the Vietnam and Thai tektites were plotted on the range of Australasian tektites reported previously. 143Nd/144Nd ratio of Vietnam tektite from this study was lower than the range of 143Nd/144Nd ratio from the Australasian tektite reported previously whereas that of Thai tektite was included in the range of 143Nd/144Nd ratio from the Australasian tektite. The geochemical characteristics from two tektites in this study indicate that they may be derived from the very similar source materials.