Shell fragments and complete tests of pteropods are commonly observed above 73.6 mcd of the recovered section. A unique feature of Site 1145 is the occurrence of several complete echinoderms. Some echinoderm fragments are also found remineralized by pyrite. Three wood fragments are found and samples were taken for detailed shorebased analysis. A small number of cores contain fresh angular volcanic glass shards within burrows, as well as dispersed ash in low concentrations within the sediment.
Volcanic ash represents a volumetrically insignificant proportion of the total sequence.
Thin foraminifer turbidites occur rarely at Site 1145. Both planktonic foraminifer and calcareous nannofossils are common to abundant, though planktonic foraminifer preservation degraded from good to poor down section and the nannofossils were occasionally to commonly reworked. Benthic foraminifers are generally few in number. An age-depth plot of the three fossil groups shows that the biohorizons generally agree with each other. The age of the oldest sediments recovered at Site 1145 is estimated at 3.12-3.35 Ma from the biostratigraphy.