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Surface clay formation during short-term warmer and wetter conditions on a largely cold ancient Mars
Michalski, Joseph R.; Bishop, Janice L.; Fairén, Alberto G. +5 more
The ancient rock record for Mars has long been at odds with climate modelling. The presence of valley networks, dendritic channels and deltas on ancient terrains points towards running water and fluvial erosion on early Mars1, but climate modelling indicates that long-term warm conditions were not sustainable2. Widespread phy…