Drilling on Transect EG64 was exploratory in nature and resulted in basement recovery at only two sites. Drilling at other sites encountered thick accumulations of glaciomarine sediments covering the basement, which could not be fully penetrated using the British Geological Society's 3-m Rockdrill. A single sparker source seismic line (DLC99-4) was shot during the cruise along most of the original DLC9708 seismic line covering the basin structure and seaward-dipping reflectors to the east (Fig. F1). A large number of prominent ridges are seen in the DLC99-4 sparker seismic profile suggesting basement highs; however, it is our assessment that many of these may be rubble heaps resulting from iceberg scouring of the seabed or are moraine deposits. We based this interpretation on our unsuccessful attempts to reach basement at a number of sites located on these prominent ridges. For example, Hole SEG69A only recovered rounded to subrounded clasts of sandstone, felsic gneiss, and volcanic breccia. Holes SEG67A, SEG68A, and SEG72A penetrated 2–3 m without recovery of material. The two sites where basement was recovered are located approximately in the middle of seismic Line DLC99-4 (Fig. F3). Coring in Hole SEG70A recovered 61 cm of vesicular and amygdaloidal, highly plagioclase-clinopyroxene-olivine phyric to glomerophyric basalt, whereas coring in Hole SEG71A sampled 34 cm of a fine- to medium-grained diabase interpreted as a sill or dike. The X-ray fluorescence (XRF) analyses show that the basalt from Hole SEG70A is hypersthene normative with a Mg number of 0.48 and TiO2 content of ~1.95 wt%. Plagioclase phenocrysts are An72–78 and clinopyroxene have Mg numbers of 0.76–0.78. The diabase from Hole SEG71A is practically identical to the Hole SEG70A basalt in whole- rock and mineral compositions. The volcanic basement units from both Holes SEG70 and SEG71A have reversed paleomagnetic polarity.