Tags: Crater.
Eos Chasma is a chasma in the southern part of the Valles Marineris canyon system of the Margaritifer Sinus quadrangle (MC-19) region of the planet Mars.Eos Chasma’s western floor is mainly composed of an etched massive material composed of either volcanic or eolian deposits later eroded by the Martian wind. The eastern end of the Eos chasma has a large area of streamlined bars and longitudinal striations.