Of Lithostratigraphy of Eocene in Northern Belgium
Contr. Tert. Quatern. Geol. 34(3-4) 53-67 10 figs., 1 tab. Leiden, October 1997 Review of the lithostratigraphy of the Middle Eocene in northern Belgium Bart Fobe GEOLOGISCH INSTITUUT UNIVERSITEIT GENT GENT, BELGIUM Fobe, Bart. Review of the lithostratigraphy of the Middle Eocene in northern Belgium. — Contr. Tert. Quatern. Geol., 34(3-4): 53-67, 10 figs, 1 tab. Leiden, October 1997. The lithology of Middle Eocene deposits, and that of stone layers in particular, was studied in subcrops in northwestern Belgium, allowing the conclusions their be drawn. On of its brown the of the Pittem following regarding lithostratigraphy to account colour (lignite), upper part Member (Gent Formation) has proved to often be a conspicuous key horizon. On the basis of a study of the geometry of the deposits in various boreholes and of the sandstone facies it can now be confirmed that the Beemem Member (previously referred to the Aalter or Knesselare formations) in fact belongs to the Vlierzele Formation. The Oedelem Formation(new name) consists of fossil-rich sand (Aalter Member or Aalter sands on of which the which sand. sensu stricto) top rests Evergem Member (new name), comprises glauconitic In borehole interpretations, this unit has been confused with the Vlierzele sand or with the Wemmel sand. Previous records of Lede Formation strata in the area between Gent and the North Sea coast are here confirmed. Key words — Eocene, Belgium, lithostratigraphy. Fobe, Instituut, Universiteit B. dr. sc., Geologisch Gent, Krijgslaan 281 S8, B-9000 Gent, Belgium; and, Herentalsesteenweg 66, B-2220 Heist-op-den-Berg, Belgium.
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