Location of IODP Site 302-4A

Figure 1. Location of IODP Site 302-4A (red dot) on Lomonosov Ridge in the central Arctic Ocean. The paleogeographic map shows how the different continental configuration during the early Eocene resulted in isolation of the Arctic basin from the Proto-Atlantic Ocean. The yellow dots indicate other late Paleocene and early Eocene records of vegetation. (Figure 1 from Willard et al., 2019)