(Table 3) Chemical composition of medium-K glasses from ODP Hole 125-782A fal...
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Cations based on 4 oxygens. Numerical ages of tephra are based on calcareous nannofossil stratigraphy Xu and Wise (1992, doi:10.2973/odp.proc.sr.125.142.1992)
以4个氧原子为基准的阳离子。火山碎屑物(tephra)的数值年代以钙质超微化石(calcareous nannofossil)地层学为依据,相关数据引自Xu与Wise(1992年,DOI:10.2973/odp.proc.sr.125.142.1992)



