Extended Data Fig. 4: Mass balance for each feature of interest removed in our crustal reconstruction.
From: A thick crustal block revealed by reconstructions of early Mars highlands

a, mass excess (red) and mass deficit (blue) for each feature of interest. b, the total mass excess (mass excess + mass deficit) for each feature of interest. Mass-conserving structures have a total mass excess of zero. c, the ratio between mass excess and mass deficit. Mass-conserving structures have a ratio of one.