Major element analyses (electron microprobe) of volcanic glass samples used f...

Means and standard deviations of several analyses reported. Oxide sums <95wt% indicate incipient alteration of the glass, Cr close to detection limit.本研究报道了多组分析的平均值与标准偏差。氧化物总质量百分比低于95wt%表明玻璃发生初始蚀变，铬（Cr）含量接近检测限。