Both samples yielded well preserved plant microfossils. The accompanying table lists the forms found and their relative abundance based on counts of 300 pollen grains from each sample.

Based on comparisons with the pollen spectra from the Kenai Formation, the age of the Pribilof Canyon samples is probably Homerian. Such an age is indicated by the diversity of the coniferous pollen; particularly notable is the presence of Abies and Keteleeria, neither of which is known to have survived into the Clamgulchian. As in the Kenai Homerian samples, regionallly exotic broadleaved genera are poorly represented, and include but two genera: Pterocarya and Corylus.

Based on Stanley's studies (Deep-Sea Research, 1966, v. 13, p. 921-939) of Holocene and Pleistocene samples from the Atlantic, it is probable that the Pribilof Canyon siltstone was deposited close to shore. Thin-walled grains (Cyperaceae, Populus) are present in the samples, and such grains are poorly represented in ocean basin cores. The abundance and diversity of spores in especially TT-D-2 is a strong indication that the spectrum reflects local vegetation, that is, the plants that shed these spores probably grew in abundance close to the site of deposition.

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Brief statement of problem and remarks (from collector):
Samples of diatomaceous sandy siltstones have been dredged from the walls and floor of Pribilof Canyon. Age control is needed on these samples to determine the time of the last major outbuilding of the continental slope in the vicinity of the Pribilof Islands. The sandstones overlie a downward basement surface of probable late Mesozoic age.

The specimen submitted directly to Jack Wolfe.