New mapping of Mars shows Medusae Fossae Formation older than once thought – Smithsonian Insider

Image left: Uniformly bedded materials visible within western MFF (left) and near the top of the large central mound in Gale crater (right). Portions of two HiRISE (High Resolution Imaging Science Experiment) frames. (NASA/JPL-Caltech/University of Arizona)

New mapping of Mars shows Medusae Fossae Formation older than once thought

Recent geologic mapping of the Medusae Fossae Formation on Mars—an intensely eroded deposit near the northern edge of the cratered highlands—has revealed a wider distribution of its western component than was previously recognized.