A Middle Midlandian freshwater series at Derryvree, Maguiresbridge, County Fermanagh, Northern Ireland

During February and March 1969 road excavations in Derryvree townland (H361390), section Co. Fermanagh, cut obliquely through a north-east to south-west trending drumlin 2 km north-east of Maguiresbridge (figure 1). The excavations revealed a freshwater deposit of silts and fine sands between two thick and distinct till sheets which formed the drumlin. The organic silts and fine sands contained a flora and fauna of full glacial aspect, which have given a $^{14}$C date of 30500$_{-1030}^{+1170}$ years B.P. (Birm. 166). The flora and fauna indicate that open tundra vegetation and a periglacial climatic regime prevailed in the area at this time.