No shipboard biostratigraphic analysis was conducted on the few sedimentary rocks recovered at Site 1277 because no suitable materials were recovered.
Agglutinated benthic foraminifers occur in a single piece of indurated ferruginous sediment (Sample 210-1277A-1W-1, 5–9 cm) overlying igneous rocks at Site 1277 (Fig. F5). The few poorly preserved specimens include planispirally coiled forms with numerous chambers and alveolar internal walls similar to those in the family Cyclamminidae. There are also encrusting(?) tubelike forms possibly belonging to the family Ammodiscidae. In addition, several tiny planktonic foraminifers were observed in a dark-colored sedimentary clast. No age-diagnostic taxa were observed.