(Table 1) Electron microprobe analyses of volcanic glass of some tephra layer...

Values are recalculated to 100% on a fluide-free basis. Original oxide totals before recalculation are given to indicate approximate degree of hydration of volcanic glass.所有数值均以脱流体（fluide-free）为基准重算至100%。本文给出重算前的原始氧化物总量，用以表征火山玻璃的近似水化程度。