 All but the topmost cones of Detroit Seamount are capped in a thick layer of sediments, which were found to have drifted there from a direction due northwest.The drift that carried the sediments onto the volcano was named the "Meiji Drift," after the oldest volcano in the chain, Meiji Seamount, which was also in that direction.The drift is of Oligocene to Quaternary-era mud, deposited by ocean currents.