Dr Engelbrecht, I.N.J Tsumeb Jour. of Sedimentology - Elsevier c197? Louis Krüger "Stromatolites + oncolite in T. Otavi Series, S.W.A.," Jour. of Sed. Petrol. 39; # 3 p. 1046- 1056, Sep. 1969. Late Prec. Near Dorab - Bushmans Klippen Dolomitic ls. correlated w Nana. 2 miles beyond Airport - wd to rt., Farm of Jibodona boundary 225, Doreen 227 White quartzite ridge - cap beneath dolomite, w. fossils, on Tas... Doreen - glacial deposit, K G SeeGer In Dorab - usually highly silty Prec. Geology o. S.W.A. + Namqualand by Henno Martin, T. Prec Research Unit Univ. of Capetown, 1965 by Rustica Press Ltd, Court Rd, Wynberg, C.P.