Origin and age of water-related morphologies in the southwest Sinus Sabaeus, Mars

Since the formation of Mars, its environmental conditions have changed. There is multiple and varied evidence that Mars was more similar to Earth at the beginning of its history. To contribute to the knowledge of the early conditions on Mars, it is important to study the geomorphological processes that shaped its surface and the period of time during which these processes operated. 
For this purpose, we have selected an area located between highlands and lowlands, in the southwest of Sinus Sabaeus (3ºE, 21ºS and 10ºE, 29.5ºS). This region is composed by a longitudinal valley, named Marikh Vallis, a central plateau, and two large craters with diameters of 198.8 and 121.7 km each, which we named Margulis and Roemer, respectively (IAU approval on April 21, 2021).
To study these geomorphologies, we have included datasets in ArcGis, based on Context Camera images (CTX), with 6/pixel resolution. To obtain age constraints, we used the Crater Size Frequency Distribution (CSFD) counting technique using the "Craterstat" software, developed by the University of Berlin.
The combined geomorphological and crater counting results suggest that the study area has undergone several resurfacing processes consistent with surface modification by liquid water and water ice. These processes also included glacial and periglacial processes, and some modifications due to subsurface water activity triggered by the melting of ice in the shallow subsurface. Most of these processes occurred during the Noachian and the Hesperian periods.
Some of the identified morphologies, such as etched terrains, polygonal terrains, crater ejecta, and some valley types, are compatible with a Noachian to Hesperian origin under glacial and periglacial conditions. This fact is particularly relevant because it means that the studied morphologies may have formed under an icy and wet early Mars, suggesting that Sinus Sabaeus could be considered an attractive Martian location to explore in terms of habitability.