The Whitehill Formation a high conductivity marker horizon in the Karoo Basin Branch, T. ; Ritter, O. ; Weckmann, U. ; Sachsenhofer, R. F. ; Schilling, F. Abstract Publication: South African Journal of Geology Pub Date: September 2007 DOI: 10.2113/gssajg.110.2-3.465 Bibcode: 2007SAJG..110..465B