Late Paleozoic exhumed glacial erosive landscape in Salto, SP

JULIANA B. VIVIANI, ANTONIO C. ROCHA-CAMPOS
2002 Anais da Academia Brasileira de Ciências  
549 spectrometry showed disequilibrium between 226 Ra and 238 U. The obtained ( 238 U/ 232 Th) and ( 230 Th/ 232 Th) activity ratios allowed to estimate a 140,000 y age for the Morro
doi:10.1590/s0001-37652002000300034 fatcat:nv3vi4qzdngftfam2kxtjfvnxu