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.

Supplement to: von Rad, Ulrich; Kreuzer, Hans (1987): Composition, K-Ar dates and origin of a Mid-Eocene rhyolitic ash layer at Deep Sea Drilling Project Sites 605 and 613, New Jersey Transect, Legs 93 and 95. In: van Hinte, JE; Wise, SW Jr; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 93, 977-981