Transect EG64 is covered by the air gun seismic Line DLC9708 (Fig. F2). A number of preliminary sites were selected prior to arrival based on this profile. In addition, sparker seismic Line DLC990-4 (Fig. F3) was shot and the data interpreted onboard to decide on the final site selection. The sparker seismic data confirmed that the basin area is covered by thick glacial marine sediment; therefore, sites were mainly located on the topographic highs to avoid the sediment cover. Furthermore, the structure seen in the sparker data of the smaller basement highs within the basin was considerably more complex than revealed in the air gun seismic data. Possible three-dimensional effects and thick glacial deposits on the highs may contribute to this complexity. Because of limited time on this transect, the Shipboard Scientific Party decided not to pursue drilling targets within the basin. Attention was instead directed at the basement highs to the east within the featheredge of the dipping reflectors (Fig. F2). For these sites, it also proved difficult to penetrate the glaciomarine cover, despite the promising sites identified in the seismic profiles. It became apparent that the whole region was subject to very high rates of sediment accumulation, presumably related to its location east of the source of major outputs from the Greenland ice cap. Before departing from this transect area, we chose to drill on the high eastern escarpment of the basin into what may be the base of the lava sequence (Fig. F2). Site SEG70 was successful in penetrating the basement and recovering basalts. Site SEG71 also drilled into basement and recovered diabase. After a third attempt to drill Site SEG72, we terminated drilling on Transect EG64. A summary of the drill site locations and core recovery for Transect EG64 is given in Table T1.