DOI: 10.1029/2004je002248
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Abstract: The evolution of the Martian crustal dichotomy boundary, which separates the southern cratered highlands from the northern lowland plains by 1–3 km of elevation, remains among the fundamental outstanding issues in Mars research. For a study area at Aeolis Mensae we show that fretted terrain formed exclusively in a >2 km thick, late Noachian (∼3.7 Ga) sedimentary deposit that overlies the base of an older, cratered dichotomy boundary slope. In this equatorial study area, fretted terrain does not exhibit the deb…

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