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Compositional variation in Roman colourless glass objects from the bocholtz burial (the Netherlands)Huisman, D.J. (author), de Groot, T. (author), Pols, S. (author), van Os, B.J.H. (author), Degryse, P. (author), TNO Bouw en Ondergrond (author)We investigated the major and trace element composition and Pb and Sr isotope characteristics of a series of about 20 colourless glass objects from a single high-status Roman burial from the Netherlands (Bocholtz). The major elements show a relatively homogeneous group, with one outlier. This is corroborated by the Sr isotopes. Based on the Sb...article 2009
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Nederlands Instituut voor Toegepaste Geowetenschappen TNO (author), Jansen, H.S.M. (author), Huizer, J. (author), Dijkmans, J.W.A. (author), van Hinte, J.E. (author)87Sr/86Sr (Strontium) ratio analyses of shell material (mainly Arctica islandica) from 24 levels in the Maassluis Formation of boreholes Noordwijk, Zegveld and Terschelling suggest that the age of the formation ranges from 0.82 to 2.34 Ma (± 0.5 Ma), and that the Oosterhout Formation at Noordwijk could be as much as 2.5 Ma older than hitherto...article 2004