    Sentenée’t: Previous to iéotopie dating sections of rocls-had'ta be.  dated using fossils arid stratigiaphic correlation relativéto what?    Senterice, 2: with *scropie! dates i Betame possible ‘to assign  absolute-ages t0 rock units, and these absélute dates eouid be.  applied 0 fossit sequences in which theie was datablé.material    converting the old relative ages inte ogee    Cad