Tag Archives: University of Arizona

HiRISE: Layers and flow features in Protonilus Mensae

Layers and flow features in Protonilus Mensae. Repeat image to look for glacial and periglacial changes. There are also some interesting superposition of glacial, polygon, gully, fan, and crevasse features. Who wants to take a hike? Beautiful Mars series. [More … Continue reading

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HiRISE: Chaos terrain

This image shows chaos terrain on Mars’ equator. NB: HiRISE has not been allowed to acquire off-nadir targeted observations for a couple of months due to MRO spacecraft issues, so many high-priority science objectives are on hold. What can be … Continue reading

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HiRISE: Diverse lithologies on a crater floor

This image shows bedrock units with diverse colors indicating different mineral concentrations. NB: HiRISE has not been allowed to acquire off-nadir targeted observations for a couple of months due to MRO spacecraft issues, so many high-priority science objectives are on … Continue reading

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HiRISE: Curved ridge and layered materials

Curved ridge and layered materials. Is the curved ridge a remnant of inverted stream channel sediment, crater ejecta, or something else (e.g., tectonic)? Are the layered materials sedimentary rock? Beautiful Mars series.

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HiRISE: Streamlined features and fractures in Hebrus Valles

Streamlined features and fractures in Hebrus Valles. The rationale for this observation is to assess outflow channel discharges as well as getting a better look at the actual topography. Beautiful Mars series.

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HiRISE: Bouldery plains

Sometimes we see a field of boulders rather than bedrock, as in this image. [More at link]

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HiRISE: Young lava flows

This image shows remarkably young lava flows in Elysium Planitia. There are almost no impact craters over this flow, indicating that it is probably only a few million years old—practically an infant in geologic time. [More at link]

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HiRISE: Terrain immediately south of Arsia Mons

Terrain immediately south of Arsia Mons. This terrain is probably due to ancient volcanic activity. Beautiful Mars series.

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HiRISE: Frosted dunes in north polar region

A soothing way to start your Monday. These polar dunes show both carbon dioxide frost (the while colored areas) along with darker material that’s been exposed due to sublimation, and is blown by the wind to form these dark spots. … Continue reading

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HiRISE: Candidate ExoMars landing site in Oxia Palus

Candidate ExoMars landing site in Oxia Palus region. Beautiful Mars series.

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