The Houthem Formation, named after the Dutch town of Houthem, is a geological formation that crops out in the south of Belgian and Dutch Limburg. It has also been found in borings in the northeastern part of the Campine Basin. The formation consists of calcareous sandstone and was formed about 60 million years ago, in the Paleocene epoch.


  • Bless, M.J.M.; Dusar, M.; Felder, P.J. & Swennen, R.; 1993: Lithology and biostatigraphy of Upper Cretaceous-Paleocene carbonates in the Molenbeersel borehole (NE Belgium), Geologie en Mijnbouw 71, pp. 239-257.
  • Laga, P.; Louwye, S. & Geets, S.; 2001: Paleogene and Neogene lithostratigraphic units (Belgium), Geologica Belgica 4, pp. 135-152.
  • Felder, W.M.; 1975: Lithostratigrafie van het Boven-Krijt en het Dano-Montien in Zuid-Limburg en het aangrenzende gebied, in: Toelichting bij de geologische overzichtskaarten van Nederland, Rijks Geologische Dienst, Haarlem, pp. 63-72.
  • Romein, B.J.; 1962: On the type locality of the Maastrichtian (Dumont, 1849), the upper boundary of that stage and on the transgression of a Maastrichtian s.l. in Southern Limburg, Mededelingen Geologische Stichting, nieuwe serie 15, pp. 77-84.
Mantell's Iguanodon restoration

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