HiRISE | HiPOD Updates

HiPOD: Week of 25 May 2026

	Deposits in Aeolis Dorsa Branching deposits in this area have been shown to be consistent with river deltas. Measurements of channel-belt width and thicknesses of river deltas on Earth point to relationships between width, thickness, and backwater hydrodynamics. Here, we would like to make similar measurements of the delta deposits in the Aeolis Dorsa region.
	Bright Patches The science rationale for this observation underscores the importance of HiRISE to provide higher resolution images: the CaSSIS instrument on the ExoMars Trace Gas Orbiter detected bright patches here, so we can take a more detailed look. This footprint is in the southwestern part of an extremely old and infilled impact crater in Thaumasia Planum, wihich lies south of Melas and Coprates Chasmata.
	Mesas of Layered Sedimentary Rocks in Valles Marineris Valles Marineris, like the Grand Canyon in northern Arizona, provides a spectacular look at the geologic history.
	Steep Slopes of Crumbling Bedrock in Valles Marineris This image covers a rocky ridge deep in Melas Chasma, targeted to sample bedrock exposures.
	Bright Layers of Sedimentary Rocks The region on the north side of Terby Crater contains layered bedrock including bright materials thought to be sediments, perhaps deposited by flowing water.