there was a velocity decrease. This velocity decrease is interpreted as being a consequence of changes in rock elasticity brought about by a diminution in the bonding strength of the rock. This means that wetting, prior to freezing, may weaken a rock.
and eroded materials deposited prior to 0.25-0.29 MY. The second generation is related to terraced alluvial sediments| both deposits are strongly weathered to form a fersiallitic soil of Eemian age. This soil contains artifacts of the final Acheulean