Udo Zimmermann is a professor at the Department of Energy Resources at the University of Stavanger. Since receiving his PhD in geology in 1999, his research focus has been concentrated on provenance studies and reservoir characterization using heavy minerals and geochemical and isotope geochemical methods in clastic and chemical sedimentary rocks from Archean to Phanerozoic ages. Zimmermann has worked since 2000 in academics with positions in Argentina, South Africa, and now Norway and published more than 60 international peer reviewed papers. For more than 10 years he has been active in rock–fluid studies within chalk, applying a variety of novel methods. He is member of the geological societies of Germany and Argentina.