Claim: Some of the sediment of the Discovery Seamounts appears to be ice-rafted debris, and other evidence has been used to postulate that the seamount subsided by about 0.5 kilometres during the late Pleistocene, with the crust underneath Discovery Seamount is about 67 million years old, thus of late Cretaceous age.
Evidence: Some of the sediment appears to be ice-rafted debris, and other evidence has been used to postulate that the seamount subsided by about 0.5 kilometres (0.31 mi) during the late Pleistocene. The crust underneath Discovery Seamount is about 67 million years old, thus of late Cretaceous age.