Kasei Vallis

The MGS MOLA instrument context image of Kasei Valles suggests the observed channels may be partly structurally controlled due to their rectilinear pattern. However, the high-resolution THEMIS image shows grooves within the channels that can be interpreted as evidence for fluvial activity. This relationship suggests that the initial channel formation was structurally controlled, and that once formed, the channels provided a conduit for movement of material.