Extended Data Figure 5: Orthographic projection of lower-limit concentrations of water abundance at latitudes poleward of 50° N.
From: Late Tharsis formation and implications for early Mars
The red cross indicates the location of the palaeo north pole, inferred from the valley network distribution. Figure modified with permission from figure 5 of Feldman, W. C. et al.24, J. Geophys. Res., John Wiley and Sons, copyright 2004 by the American Geophysical Union.
