Table DR4. Weathering history and landscape evolution of Western Ghats (India) from 40Ar/39 Ar dating of supergene K–Mn oxides

Electron probe microanalyses with stoichiometric compositions of most of dated cryptomelane, identified in polished thin sections from Mn ore deposit samples. a) Cryptomelane from Diggi, Terali and Nagari manganese ore deposits; b) Cryptomelane from Illva manganese ore deposit; c) Cryptomelane from Pradhani manganese ore deposit.