Map of the Moon coloured by the thickness of the crust, with main regions marked.
The KREEP rich magma terrane (hatched), with its most prominent part labeled on the near side (left), the Mare Procellarum KREEP Terrane (PKT).
The South Pole-Aitken Terrane (SPAT) is marked on the far side (right, largest circle).
The 24 crater basins with crustal thinning greater than 200 km (120 mi) are marked (black circles) across both hemispheres.
The rest is the high-thickness Felspathic Highlands Terrane (FHT; red and white).
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