00000nam 2200000za 4500 9.614772 CaOODSP 20250722104240 ta 150406|1999||||xxc||||| f|0| 0 eng d 0-660-17747-1 0068-7650 CaOODSP eng n-cn--- M44-1999/6E Geological Survey of Canada. Radiogenic age and isotopic studies: report 12 Ottawa - Ontario : Natural Resources Canada. 1999. 65p. : graphs, illus., references, tables ; 28 cm. Current research 0068-7650 1999-F "Radiogenic Age and Isotopic Studies is an annual report on recently obtained radiometric age and tracer isotope data generated by the Geochronology Subdivision at the Geological Survey of Canada. Report 12 consists of six papers on various geoscience research topics within the fields of U-Pb, Sm-Nd, and 40Ar-39Ar as well as Sm-Nd isotopic tracer studies."--Introduction. Radiogenic Age and Isotopic Studies is an annual report on recently obtained radiometric age and tracer isotope data generated by the Geochronology Subdivision at the Geological Survey of Canada. Report 12 consists of six papers on various geoscience research topics within the fields of U-Pb, Sm-Nd, and 40Ar-39Ar as well as Sm-Nd isotopic tracer studies.--Introduction Softcover 99-14 1999-04-09 Geology gcpds Research gcpds Radiogenic age and isotopic studies : (CaOODSP)9.953456 Current research (Geological Survey of Canada) 0068-7650 1999-F (CaOODSP)9.509502