Abstract We report Mesoproterozoic 40 Ar– 39 Ar (whole-rock) ages of lamproites from (i) the Ramadugu field (R4 dyke : 1434 ± 19 Ma and R5 dyke: 1334 12 Ma) Krishna (Pochampalle 1439 3 Tirumalgiri 1256 Eastern Dharwar Craton (EDC) (ii) Garledinne (1433 8 Chelima (1373 6 dykes within Paleo-Mesoproterozoic Cuddapah Basin, southern India. The reported for constitute their first radiometric dates. ...