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HiPOD 21 Aug 23: Possible Breccias in Nirgal Vallis

A Context Camera image showed light-toned blocks that may be consistent with the megabreccia basement, which is possibly exposed here as well in Valles Marineris. HiRISE had no previous coverage here, something that makes for a good HiWish target rationale. Nirgal Vallis is 610 km long and is named after Nergal, the Babylonian god of war and counterpart to the Roman god of war Mars.

uahirise.org/hipod/ESP_073956_
NASA/JPL-Caltech/UArizona

HiPOD 18 Aug 23: Chaos in Chryse

Our science goal for this observation is to document stratigraphic relationships between chaos blocks and adjacent geologic units. With a stereo pair, we can create a digital terrain model to interpret superposition relationships in this scene. The general shape of “chaotic terrain” is steep-sided mesas in close proximity. In planetary nomenclature, the descriptor term “chaos” means “distinctive area of broken terrain.”

uahirise.org/hipod/ESP_073969_

HiPOD 17 Aug 23: HiPOD: Diverse Minerals in Coprates Chasma

This image shows the southern wall of Coprates Chasma, in the equatorial canyon system of Valles Marineris.

In enhanced color, the varying colors—shades of white, cyan, and purple—are suggestive of multiple minerals being present within the bedrock, indicating a complicated geologic history, possibly involving alteration by water.

uahirise.org/ESP_079482_1650

NASA/JPL-Caltech/UArizona

HiPOD 16 Aug 23: Icy Flows

The surface of Mars is littered with examples of glacier-like landforms. While surface ice deposits are mostly limited to the polar caps, patterns of slow, viscous flow abound in many non-polar regions of Mars.

Streamlines that appear as linear ridges in the surface soils and rocky debris are often exposed on top of infilling deposits that coat crater and valley floors.

More: uahirise.org/ESP_078292_2175
NASA/JPL-Caltech/UArizona

HiPOD 15 Aug 23: From Low to High Channels

This image shows the transition from a regular channel to an inverted channel in Arabia Terra. The channel was once flowing with water that carved down into the bedrock to produce a depression.

More: uahirise.org/hipod/ESP_078858_

NASA/JPL-Caltech/UArizona

HiPOD 14 Aug 23: Light-Toned Materials along the Floor and Walls of Ius Chasma

The light-toned deposits here are thinner and occur along both the floor and walls, as we see in this HiRISE image. Additionally, the sulfates are mixed with other minerals like clays and hydrated silica.

More: uahirise.org/ESP_078863_1710

NASA/JPL-Caltech/UArizona

HiRISE 10K: Light-Toned Mounds in Ganges Chasma

This formation of light-toned mounds on the floor of Ganges Chasma have been shaped by two erosional processes: landslides and wind.

Full cutout on Flickr: flic.kr/p/2oUWM9q

HiRISE 3D: Intersection, 3D-Style

Today’s HiPOD also gets the 3D treatment, with a closer look at the impact crater on the ridge.

uahirise.org/anaglyph/ESP_0793
NASA/JPL-Caltech/UArizona

HiPOD: A Crater Intersecting a Ridge

This wrinkle ridge east of Elysium Mons is a tectonic feature likely created by a thrust fault. A small crater intersects the ridge. If the crater formed before the ridge, measurements of the crater’ shape deformation can help estimate the amount of surface displacement of the fault.

uahirise.org/hipod/ESP_079316_
NASA/JPL-Caltech/UArizona

HiRISE 8K: Light and Dark Features

When viewed at full HiRISE resolution, this area contains sand ripples with some consolidated, bedrock-like material poking through.

Full cutout on Flickr: flic.kr/p/2oUJKgz

NASA/JPL-Caltech/Arizona

HiClip: A Crater in Scalloped Terrain

Sublimation might be responsible for creating two different landforms: scalloped depressions and expanded craters.

Narrated by Tre Gibbs.

youtu.be/3T3owLi5dy8

NASA/JPL-Caltech/UArizona

HiRISE 3D: Possible Channel Heading into a Crater

This could be a possible inflow from a very small catchment.

uahirise.org/anaglyph/ESP_0790
NASA/JPL-Caltech/UArizona

HiPOD 10 Aug 23: A New Crater in the Martian South Pole

Our science goal with this observation is to monitor the frosting and defrosting of a new, small impact crater on the South Polar layered deposits. This image can help us to understand better the thermophysical properties and changes in the crater ejecta the first few years after the crater formed. The crater is about 50 meters (164 ft) across.

uahirise.org/hipod/ESP_073949_
NASA/JPL-Caltech/UArizona

HiClip: Slipping and Sliding in Echus Chaos

Echus Chaos is a region of low hills located between Lunae Planum and Echus Palus. This chaos terrain may have formed as the rocks that make up Lunae Planum slowly slid downhill into Echus Palus.

Narrated by Tre Gibbs.

youtu.be/h2RDdZT8-Dc

NASA/JPL-Caltech/UArizona

HiRISE 4K: Martian Barchans

Barchan dunes are common on both Earth and Mars. These dunes are very distinctive in shape, and are important because they can tell scientists about the environment in which they formed.

Full cutout on Flickr: flic.kr/p/2oUu3FH

NASA/JPL-Caltech/Arizona

HiRISE 3D: A Vent and Channel Northeast of Arsia Mons

This small vent appears to have raised margins and sources sinuous channels. It is aligned with other fissures on the northeast flank apron of Arsia Mons.

uahirise.org/anaglyph/ESP_0793
NASA/JPL-Caltech/UArizona

HiPOD 9 Aug 23: Tilted in Electris

This is an interesting feature that appears to be a large anticline that is crosscut by wrinkle ridges. Our science goal is to investigate structure and timing relationships. A digital terrain model can help us with structural measurements. The Electris region of Mars contains interesting features, such as raised-relief blocks of material.

uahirise.org/hipod/ESP_073948_
NASA/JPL-Caltech/UArizona

HiClip mini 4K: The Secret Life of Layers

This image shows a large outcrop of layered rock in Tithonium Chasma, a part of the Valles Marineris trough system. (This is a non-narrated clip with ambient sound.)

youtu.be/OQfHjAz2AUc

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HiRISE (NASA)

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