We obtained radiocarbon datings of 29,209±554 yrBP. for shell sample from Pukaki and 30,230±413 yrBP. for that from Motukorea in the Auckland Volcanoes, New Zealand. When we supply the ages of indivisual volcanoes and compositional change with time, it can be possible to elucidate the magma system of the Auckland Volcanic Field.