Source of Lunar Basalt

     

Source of Lunar Basalt

Lunar surface basalts are believed to have their origins in partially melted areas 100-400 kilometers (60-250 miles) beneath the large meteoroid impact basins. The basaltic material welled up into the basins through cracks created by the impacts. The basalt flows covered areas up to 1200 kilometers (750 miles) away from where they had arisen.

Image Number: WEB13289-2013
For print or commercial use, please contact: Smithsonian Institution
Reproductions are not currently available. If you would like to use this image as-is, please submit a permission request.

Large JPEG (2262 x 1974 pixels)