Radar sounding of the Eastern Medusae Fossae Formation ... - Inaf

Summary• Layering in the plains between Amazonis Mensa andGordii Dorsum has been observed by MARSIS and, to alesser extent, by SHARAD• This is the only place outside the PLD where MARSISdetects more than one subsurface discontinuity.• Although MARSIS coverage is still sparse, it seems thatthe two layers are either present or absent together.• Dielectric properties in the upper layer are compatiblewith those of dry rock• Dielectric properties in the second layer are compatiblewith those of very porous rock or regolith, or dirty ice.