1994. Early and Middle Pleistocene pollen stratigraphy from British Geological Survey borehole 81/29, Devil's Hole area, central North Sea. Netherlands Journal of Sea Research 32, 49-62.Ekman SR, Scourse JD. 1993. Early and Middle Pleistocene pollen stratigraphy from British Geological Survey ...
None of these rocks crop out at the surface and are known only from boreholes and seismic records. Younger rocks, the Chalk, Tertiary clays and the shelly sands and clays of the Crag, are well known from outcrops or shallow boreholes and wells. -from Authors...
1993. Early and Middle Pleistocene pollen stratigraphy from British Geological Survey borehole 81/26, Fladen Ground, central North Sea. Reviews in Palaeobotony and Palynol- ogy 79: 285-295.EKMAN, S. R. & SCOURSE, J. D. 1993. Early and Middle Pleistocene pollen stratigraphy from British ...