Apennine Bench Formation
Taken by Raffaello Lena on March 28, 2026 @
Rome Italy
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Details:
Archimedes is a well-known 81km-diameter crater which is situated north-west of the Apennine Bench Formation (ABF), near the eastern border of Mare Imbrium. Archimedes has no rays and its floor is flooded by mare lava. These plains are notable for their roughness and tectonic features (graben). The composition of the ABF, as determined from remote sensing data, is that of medium-K Fra Mauro (KREEP) basalts and is chemically distinct from Imbrium impact melt, which has low-K Fra Mauro basalt composition. Thus the ABF is the only known large surface expression of rocks with a KREEP basalt composition. The image taken on march 28 2026 includes also the sinuous Rima hadley and the linear Rima Bradley.
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