Average chemical compositions of onshore tephras including major elements and trace elements (Table 2a)

In table 2a average major and trace element compositions are given for analyses correlative land tephras.

Average EMP major and LA-ICPMS trace element compositions for terrestrial samples with: Sample names, unnormalized oxides of Na2O, K2O, FeOt, SiO2, TiO2, MgO, CaO, MnO, Al2O3, P2O5, total and normalized values to 100% volatile free with the same order of element oxides and trace elements. Last column indicates number of individual measurements per average with Electron microprobe and Laser ICPMS.