The North Sea Basin: Eocene
The Paleocene-Eocene boundary is well defined in many areas of the North Sea Basin, often corresponding to (or close to) a signi?cant lithostratigraphic boundary. In the North Sea, this boundary is within the Sele Formation (in UK usage) and the Dornoch Formation. The entire Dornoch Formation is included in this chapter for convenience (Fig. 71). In onshore areas of the southern North Sea Basin (including the Paris Basin), the lower limit for the purpose of this chapter is at the base of the Tienen Formation (Belgium) and the Mont Bernon Group (Paris Basin). This is a close approximation to the Paleocene-Eocene boundary.