Major episodes of geologic history of Isidis Planitia on Mars

► Geologic history of Isidis Planitia consists of four episodes. ► Impact dominated episode (until ∼3.8 Ga). ► Volcanically dominated episode (∼3.8-3.5 Ga): circum-Isidis volcanic province formed. ► Fluvial/glacial episode (∼3.5-2.8 Ga): fluvial and glacial processes dominated. ► Wind-dominated episode (after ∼2.8 Ga): minor modification of the surface.