• Chemical composition of black shale from four locations, greater Oslo area, Norway 

      Broekmans, Maarten A. T. M.; Sæther, Ola M. (NGU-Rapport (2008.092), Report, 2009)
      Chemical analyses of main, minor and trace elements have been made of Ordovician black (alum-) shale samples collected at two different localities and one waste pile in the greater Oslo area.\rThe study is aimed at ...
    • Geologiske bakgrunnsdata for kartlegging av radonfare i Norge 

      Ganerød, Guri V.; Sørdal, Torbjørn; Rønning, Jan S.; Lindahl, Ingvar; Lauritsen, Torleif; Frengstad, Bjørn; Elvebakk, Harald; Baranwal, Vikas (NGU-Rapport (2012.067), Report, 2013)
      I denne rapporten gis det en oversikt over data som NGU har tilgjengelig enten som kart eller som data i databaser, og som kan ha betydning for å vurdere risikoen for radon i Norge. Deriverte produkter som alunskiferkart ...
    • Impregnation-fluorescence petrography of black-shales from the greater Oslo area 

      Broekmans, Maarten A. T. M.; Sæther, Ola M. (NGU-Rapport (2007.080), Report, 2008)
      Extra thin sections have been made of Ordovician black (alum-) shale samples collected at two different localities and one waste pile in the greater Oslo area.\r
    • Main and trace element content of shales from Ankerskogen (Hamar) and Øvre Slottsgt. (Oslo), Norway 

      Xie, R.; Løken, T.; Endre, E.; Aagaard, P.; Sæther, O.M.; Rudolph-Lund, K. (NGU-Rapport (2009.063), Report, 2010)
      The composition of black and other shales within the Oslo Rift system may vary locally with respect to main and trace elements. Chemical analysis of major, minor and trace elements of one hundred Cambrian and Ordovician ...