Abstract
Obsidian samples from 13 Mexican quarries (Sierra de Pachuca and Zacualtipan, Hidalgo, Zaragoza and Oyameles, Puebla, Altotonga Veracruz and eight sites of the Zinaparo — Varal — Churintzio Hills region) have been analyzed by NAA. The concentration of 19 elements, major and trace, are reported. Excepting Altotonga Veracruz, the chemical composition of other obsidian flows was found homogenous. The region of the Varal obsidian was delimited. An excellent correlation between ytterbium and lutetium contents in obsidians was found.
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Jiménez-Reyes, M., Tenorio, D., Esparza-Lopez, J.R. et al. Neutron Activation Analysis of Obsidians from Quarries of the Central Quaternary Trans-Mexican Volcanic Axis. Journal of Radioanalytical and Nuclear Chemistry 250, 465–471 (2001). https://doi.org/10.1023/A:1017992920963
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DOI: https://doi.org/10.1023/A:1017992920963