NEEP602 Course Notes (Fall 1996)
Resources from Space

TABLE 5. Changes to major lunar features: old large basin and crustal strengthening stage

1. Redistribution of upper crustal material as ejecta, ejecta blankets, debris flows, and impact melt flows.

2. Regional thinning and thickening of the crust.

3. Pervasive fracturing of the crust beneath each basin.

4. Upward migration of urKREEP residual liquid from the upper mantle.

a. Formation of an interlocking boxwork of KREEP-related intrusions with corresponding enhancement of crustal strength.

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