Fig. 1: Mercury’s lobate thrust fault scarps.

a MDIS high-incidence angle image mosaic of Discovery Rupes (~55°S, 37°W), one of the prominent lobate scarps revealed during the Mariner 10 mission. b The bow-shaped Beagle Rupes (~2°S, 101°E) crosscuts the elliptically shaped Sveinsdóttir crater. Beagle Rupes was revealed during MESSENGER’s first flyby. c Enterprise Rupes (~36°S, 77°E), the largest lobate scarp on Mercury, was revealed during MESSENGER’s second flyby. This scarp cuts across the rim and floor of the Rembrandt basin, and forms the northern flank of Mercury’s great valley²⁰. d Young, small-scale scarp (~38.9°N, 27.9°E) detected in the low altitude phase of the MESSENGER mission¹². These small lobate scarps comparable in size and morphology to small lobate fault scarps found on the Moon. Image frame number EN1044893953M. White arrows indicate the locations of the fault scarps.