Interpreted age: Middle Noachian (Tanaka et al. 2014)
Additional age notes: Several landslide along southern and western boundaries suggest that the bedrock plain's formation predates the last major activity on Marikh Vallis. This activity is estimated to have occurred between 3.4 and 3.6 billion years ago by Bouley and Craddock (2014)
Bouley, S., and R. A. Craddock (2014),Age dates of valley network drainage basins and subbasins within Sabae and Arabia Terrae, Mars, J. Geophys. Res. Planets, 119, 1302–1310, doi:10.1002/2013JE004571.