A composite reference section for terminal Proterozoic strata of southern Namibia Saylor, B. Z. ; Kaufman, A. J. ; Grotzinger, J. P. ; Urban, F. Abstract Publication: Journal of Sedimentary Research Pub Date: November 1998 DOI: 10.2110/jsr.68.1223 Bibcode: 1998JSedR..68.1223S