Supplement to: SCRIPPS Institution of Oceanography (1989): ROUNDABOUT Cruise (R/V Thomas Washington) - Descriptions of cores and dredges, Scripps Institute of Oceanography (SIO). Scripps Institution of Oceanography, UC San Diego, unpublished, 105 pp, https://www.ngdc.noaa.gov/mgg/curator/data/thomas_washington/roundabout/roundabout_log.pdf