Earth: Day Zero • Paper 030 of 512

Antarctic Constraint Summary

Supporting Constraints

1. continental-scale geometry;
2. large-area preservation potential;
3. candidate radial elevation organization;
4. candidate concentric elevation relationships;
5. reported gravity anomalies;
6. compatibility with larger geometric reconstruction.

Challenging Constraints

1. limited direct observation;
2. uncertain subsurface interpretation;
3. alternative tectonic explanations;
4. uncertain dimensional thresholds;
5. chronological uncertainty.

Current Assessment

The Antarctic candidate remains viable within the framework but requires continued testing against independent datasets and competing geological interpretations.