The Dieppe Basin and adjacent areas
Seafloor mapping and seismic surveys, from the 1950s onwards, discovered that Paleogene sediments are present over a wide area in a wide shallow synclinal structure in the eastern English Channel, extending almost to the French coast. This subsea syncline was named the Dieppe Basin (Roberts 1989), and was originally believed to be separated from the Hampshire Basin. Further subsea investigations showed that there is a continuous Paleogene outcrop between this area and the Hampshire Basin (Fig. 42) (Balson in Hamblin et al. 1992, fig. 51). When this continuity was demonstrated, the whole structure was named the Hampshire-Dieppe Basin (Curry & Smith 1975), but it is useful to maintain both terms for descriptive purposes. Small onshore Paleogene outliers, including the Newhaven Outlier on the East Sussex coast in southern England (Figs 42, 158 & 160), and on and near the coast of NW France (including the ‘Dieppe outliers’), are now recognized to be outliers of the Dieppe Basin.
Figures & Tables
This Special Report comprehensively describes the stratigraphy and correlation of the Tertiary (Paleogene-Neogene) rocks of NW Europe and the adjacent Atlantic Ocean and is the summation of fifty years of research on Tertiary sediments by Chris King. His book is essential reading for all geologists who deal with Tertiary rocks across NW Europe, including those in the petroleum industry and geotechnical services as well as academic stratigraphers and palaeontologists.
Introductory sections on chronostratigraphy, biostratigraphy and other methods of dating and correlation are followed by a regional summary of Tertiary sedimentary basins and their framework and an introduction to Tertiary igneous rocks. The third and largest segment comprises the regional stratigraphic summaries. Regions covered are the North Sea Basin, on shore areas of southern England and the eastern English Channel area, the North Atlantic margins (including non-marine basins in the Irish Sea and elsewhere) and the Paleogene igneous rocks of Scotland.