Fig. 8: Proposed sequence of events for Al-rich float rocks at Jezero Crater.
From: Alteration history of aluminum-rich rocks at Jezero crater, Mars
Aqueous alteration (top-down pedogenic weathering) of a volcanic/volcaniclastic protolith led to the formation of a weathering profile characterized by Al clays overlying Fe/Mg clays; either lithification from impact (top pathway) or lithification from burial enhanced the hardness of the weathered material. Lastly, incision or impact distributed this Al-rich material into Jezero crater.
