Claim: Some of the sediment of the Discovery Seamounts (a chain of seamounts in the Southern Atlantic Ocean, which include the Discovery Seamount) appears to be ice-rafted debris, while the crust underneath Discovery Seamount is about 67 million years old.
Evidence: Discovery Seamounts are a chain of seamounts in the Southern Atlantic Ocean, which include the Discovery Seamount. 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.