(LAC-59) Geologic map of the Mare Vaporum quadrangle of the moon

The Mare Vaporum quadrangle is centrally located on the near side of the Moon, southeast of the craterlike basin of Mare Imbrium. Stratigraphic units and structures peripheral to the basin and related to it dominate the terra of the quadrangle, and one of the maria, Sinus Medii, is in a trough that is concentric with the basin. The other principal maria, Mare Vaporum and Sinus Aestuum, occupy craterlike basins that apparently antedate the Imbrium basin and developed independently of it. Some stratigraphic units and structures, mostly relatively young, are present that are not related to mare basin.