(Table 2) Major and trace elements in the ash layer at DSDP Sample 95-613-34-2,104-106

A 2-5-cm-thick, middle to lower middle Eocene, vitreous ash layer of rhyolitic composition can be correlated between Sites 605 and 613 on the uppermost continental rise off New Jersey. The ash is tentatively interpreted as a windtransported submarine fallout tephra from a major subaerial eruption of the Bermuda volcano, shortly after its emergence above sea level. The K-Ar dates of 45 Ma for a coarse size fraction of the two ashes and 40 Ma for a fine fraction of one of the samples are discordant and are only in rough agreement with the biostratigraphic age.

一层厚度为2至5厘米、成分为流纹岩质（rhyolitic）的玻璃质火山灰层（vitreous ash layer），形成于中始新世早中期，可在新泽西外海最上部大陆隆（continental rise）的605与613两个钻探站位间进行地层对比。该火山灰层被初步推断为百慕大火山在刚露出海面不久后发生的大规模陆上喷发（subaerial eruption）所形成的经风搬运的海底降落火山碎屑（tephra）。两份火山灰粗粒组分的钾氩（K-Ar）测年结果为45 Ma，单一样品细粒组分的测年结果为40 Ma，两组测年结果不一致，仅与生物地层（biostratigraphic）年代大致吻合。