Lu–Hf isotope evidence for Paleoproterozoic metamorphism and deformation of Archean oceanic crust along the Dharwar Craton margin, southern India

•The study region Kanjamalai is located at the S margin of India's Dharwar Craton.•We report a 2.43Ga Lu–Hf garnet age from mafic granulites from Kanjamalai.•REE and trace element patterns suggest a protolith of oceanic crust affinity.•Initial deformation of garnet from Kanjamalai is constrained to 2.43Ga.•Paleoproterozoic subduction–accretion occurred along the S-Dharwar Craton margin.