HiPOD: Embayed Ridges in Alba Patera

A deposit, interpreted as a debris-covered glacier or glaciers akin to lobate debris aprons or lineated valley fill, embays a group of ridges near the western edge of the Alba Patera caldera complex. Most other such deposits on Alba Patera’s caldera walls do not encounter any topographic obstacles. The deposit also bears surface textures, possibly associated with the desiccation of ice-rich material.

https://uahirise.org/hipod/ESP_075356_2205
NASA/JPL-Caltech/UArizona
#Mars

HiPOD: The Niagara Falls of Mars

Various researchers are often pre-occupied with the quest for flowing water on Mars. However, in this image, we see one of many examples from Mars where lava (when it was molten) behaved in a similar fashion to liquid water.

More: https://uahirise.org/hipod/ESP_050406_1585
NASA/JPL-Caltech/UArizona

#Mars #science #NASA

HiPOD: Jamming with the “Spiders” from Mars

But these aren’t actual spiders. We call it “araneiform terrain,” to describe the spider-like radiating channels that form when carbon dioxide ice below the surface heats up and releases. This is an active seasonal process we don’t see on Earth. Like dry ice on Earth, the carbon dioxide ice on Mars sublimates as it warms (changes from solid to gas) and the gas becomes trapped below the surface.

https://uahirise.org/hipod/ESP_055283_0985
NASA/JPL-Caltech/UArizona

HiRISE 10K: In Aram Chaos

The southern cap rock in Aram Chaos is situated in the Martian equatorial region, to the east of the Tharsis region.

Full cutout on Flickr -> https://flic.kr/p/2pVSDZS

HiRISE 3D: Inflated Lava Flows in the Southern Tharsis Region

This image was requested to look for inflated flows to compare with terrestrial analogs.

Full image: https://www.uahirise.org/anaglyph/ESP_083203_1585_ESP_083137_1585_RED

NASA/JPL-Caltech/UArizona
#Mars #science

HiPOD: Amid Buttes or Yardangs in Martz Crater

Also visible in Context Camera data, what we see here is perhaps light-toned rock *or* smooth units with dust coating. Either way, by analogy to prior experience (e.g., Gale Crater), there is some possibility this is an exposure of ancient mudstone. Or not. The surrounding butte- or yardang-forming materials might also be sedimentary.

https://uahirise.org/hipod/ESP_075347_1445
NASA/JPL-Caltech/UArizona
#Mars #science #NASA

HiRISE 8K: Layered Bedrock near Oyama Crater

This observation on the west wall of the same crater further reveals these layered rocks for comparison with what we see on the north wall.

Full cutout on Flickr -> https://flic.kr/p/2pVFNey

NASA/JPL-Caltech/UArizona

HiRISE 3D: The Scouring

Scour pits are a poorly understood erosional feature that are nearby but distinctive from the Medusae Fossae Formation (MFF). At the southwest of the main MFF formation unit, there are systems of hundreds of scour pits.

https://www.uahirise.org/anaglyph/ESP_083046_1795_ESP_083191_1795_RED
NASA/JPL-Caltech/UArizona

HiPOD: Channels in Ius Labes

These channels exhibit features indicative of past fluid flow, potentially suggesting ancient hydrological activity. By studying these channels in detail, including their size, shape, and distribution, researchers can infer the nature of the fluids that once flowed through them, providing valuable insights into the Martian hydrological cycle and the potential for water-related processes, such as sediment deposition and erosion.

https://uahirise.org/hipod/ESP_083162_1725
NASA/UArizona

HiRISE 4K: Bedrock in Meridiani Planum

The science rationale for this observation was short and sweet: “Nice rock all around. Good place for nadir samples.”

Full cutout on Flickr: https://flic.kr/p/2pVoaMn

#Mars #science #geology

HiRISE 3D: Streamlined Features in Argyre Planitia

A close-up look at the streamlined features should provide important insight into their formation and further insight into the evolution of the Argyre Planitia.

https://www.uahirise.org/anaglyph/ESP_083108_1320_ESP_083042_1320_RED
NASA/JPL-Caltech/UArizona
#Mars #science #3D

HiPOD: The Inner-Channel Problem

Not so much a problem but an hypothesis: Context Camera data suggests an inner-channel in this long valley system. HiRISE is needed to check and enable measurement of channel width. Inner channels are useful for paleohydrology, but they are rarely preserved in long valley systems.

ID: ESP_075326_2095
date: 21 August 2022
altitude: 289 km

https://uahirise.org/hipod/ESP_075326_2095
NASA/JPL-Caltech/UArizona
#Mars #science #NASA

HiRISE 3D: Deltaic Lobes in Aeolis Dorsa

Observations like these may suggest that Aeolis Dorsa is a paleo-coastal region which may be an important site for exploration in the future.

https://www.uahirise.org/anaglyph/ESP_083272_1735_ESP_082995_1735_RED
NASA/JPL-Caltech/UArizona
#Mars #science #3D

HiPOD: Channels in Enipeus Vallis

The objective of this observation is to examine small channels. They may be caused by lava or water, as there are many lava flows here. Enipeus Vallis is a valley in the Northern Hemisphere of Mars, following a North-South path for about 357 km (222 mi). Enipeus is a river god in Greek mythology.

ID: ESP_075329_2185
date: 21 August 2022
altitude: 290 km

https://uahirise.org/hipod/ESP_075329_2185
NASA/JPL-Caltech/UArizona
#Mars #science #NASA

HiPOD: Clay-Rich Terrain in Northeast Syrtis Major

This observation was requested because of an interesting mineral outcrop identified in CRISM mapping data. It is likely an iron/magnesium phyllosilicate (clay). Syrtis spans some 1,300 km (800 mi) wide, yet rises only about 1 km (3,300 ft) high and is one of the most prominent Hesperian volcanic complexes on Mars.

ID: ESP_075323_1975
date: 21 August 2022
altitude: 276 km

https://uahirise.org/hipod/ESP_075323_1975
NASA/JPL-Caltech/UArizona
#Mars #science #NASA

HiPOD: Light-Toned Mounds in Gorgonum Basin

Gorgonum Basin is one of several large basins within the Terra Sirenum region of Mars. Each basin has light-toned mounds, many of which contain clays.

Scientists think that Terra Sirenum once had a large lake during an epoch called the Late Noachian/Early Hesperian, and each basin filled with sediments. The water within the lake may have altered these sediments to form the clays we now observe from orbit.

https://uahirise.org/hipod/ESP_050948_1430
NASA/JPL/UArizona

HiRISE 3D: Exposure of South Polar Layered Deposits

The existing topographic data here is sparse here, so this adds to our knowledge inventory.

https://www.uahirise.org/anaglyph/ESP_032287_0925_ESP_032484_0925_RED
NASA/JPL-Caltech/UArizona

HiPOD: A Channel on a Crater Wall

The objective of this observation is to examine a small channel on an old crater wall. The channel has cut through the rim in two places, and this scene, located north of the Hellas region, is also visible in Context Camera data.

ID: ESP_075323_1555
date: 21 August 2022
altitude: 255 km

https://uahirise.org/hipod/ESP_075323_1555
NASA/JPL-Caltech/UArizona
#Mars #science #NASA

HiRISE 3D: Light-Toned Deposits in an Impact Crater

This crater is located to the north of Eberswalde Crater, and the image was requested to resolve layering here.

https://www.uahirise.org/anaglyph/ESP_032706_1575_ESP_040605_1575_RED
NASA/JPL-Caltech/UArizona
#Mars #science #3D

HiPOD: Lithified Lobes

This observation features a possibly multi-layered lobe that might be ejecta from craters on southwest rim of the crater in which they occur. They could also be landslide deposits that pre-date those impacts, meaning that the ejecta had to have eroded away before re-exposing landslide lobes. Either way, the erosional expression is suggestive that the materials are perhaps lithified.

https://uahirise.org/hipod/ESP_075321_1550
NASA/JPL-Caltech/UArizona
#Mars #science #NASA