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Inverted Terrain in Eridania

The Eridania Basin is thought to have once contained a large sea. This image shows the Gorgonum Basin, which lies along the eastern edge of Eridania.

The ridges and channels are interpreted to have formed by water flow, either along the surface (channels) or in the subsurface (ridges), providing clues to the water history of Eridania.

More: uahirise.org/hipod/ESP_043946_

NASA/JPL-Caltech/University of Arizona

The Color Wonderland of Mawrth Vallis

Mawrth Vallis has some of the most spectacular color variations seen anywhere on Mars. This color variability is due to a range of hydrated minerals—water caused alteration of these ancient deposits—which is why this site is of interest to study the past habitability of Mars.

ID: ESP_045747_2030
date: 30 April 2016
altitude: 286 km

uahirise.org/hipod/ESP_045747_
NASA/JPL-Caltech/University of Arizona

A Triple Crater

This image shows an elongated depression from three merged craters.

The raised rims and ejecta indicate that these are impact craters rather than collapse or volcanic landforms. The pattern made by the ejecta and the craters suggest this was a highly oblique (low angle to the surface) impact, probably coming from the west.

uahirise.org/hipod/ESP_049987_
NASA/JPL-Caltech/University of Arizona

HiRISE 3D: Possible Exposure of Polar Layered Deposits

The goal of this observation is to determine topography in an area not observed by MOLA (Mars Orbiter Laser Altimeter).

uahirise.org/anaglyph/ESP_0237

NASA/JPL-Caltech/University of Arizona

To Great Depths

This image from eastern Hellas Planitia shows some of the unusual features on the basin floor. These relatively flat-lying “cells” appear to have concentric layers or bands, similar to a honeycomb. This “honeycomb” terrain exists elsewhere in Hellas, but the geologic process responsible for creating these features remains unresolved.

uahirise.org/hipod/ESP_049330_
NASA/JPL-Caltech/University of Arizona

HiRISE 3D: A Cliff in Hellas Planitia with Linear Gullies

This area contains a significant scarp. Other observations along this scarp show highly visible gullies. CTX images show darker colored ground in this area.

uahirise.org/anaglyph/ESP_0836

NASA/JPL-Caltech/University of Arizona

An Inverted Channel in Aniak Crater

'The objective of this observation, also available in Context Camera data, is to examine a valley that turns into a ridge in the southeastern part of Aniak Crater. This is probably an example of an inverted channel, so the material that formed it was more resistant to erosion than the surrounding terrain.

ID: ESP_075368_1465
date: 25 August 2022
altitude: 249 km

uahirise.org/hipod/ESP_075368_
NASA/JPL-Caltech/University of Arizona

HiRISE 3D: A Possible ExoMars Landing Site in Oxia Planum

This image again highlights HiRISE’s crucial role in selecting potential landing sites, not only due to high resolution, but for 3D images to help assess risk.

uahirise.org/anaglyph/ESP_0834

NASA/JPL-Caltech/University of Arizona

Small Channels near a Central Pit in Terra Cimmeria

There are small channels visible in Context Camera data that are of interest at HiRISE resolution. The host crater is (relatively) fresh and thus may be geologically young; the channels incised on both its northern interior rim and floor may be candidates for impact induced hydrothermal activity.

ID: ESP_083444_1440
date: 15 May 2024
altitude: 253 km

uahirise.org/hipod/ESP_083444_
NASA/JPL-Caltech/University of Arizona

HiRISE 3D: An Inverted Channel in Arabia Terra

This observation features a spectacular inverted channel in Arabia Terra. Maybe a channel belt?

uahirise.org/anaglyph/ESP_0830

NASA/JPL-Caltech/University of Arizona

Well-Exposed Layers near the Rosalind Franklin Landing Site

The Rosalind Franklin rover from the European Space Agency is expected to arrive at Mars in a future year, to study ancient layered bedrock in the Oxia Palus region about 80 kilometers to the northeast of this image location.

This observation is part of a stereo pair of a 1.5 km-wide crater with excellent exposures of the bedrock layers, that will help reconstruct the stratigraphy in the region.

uahirise.org/hipod/ESP_082685_

HiRISE 3D: A Crater with Steep Slopes

There might also be gullies here, in a region where gullies are not typically present due to elevation.

uahirise.org/anaglyph/ESP_0832

NASA/JPL-Caltech/University of Arizona

Hot Mineral Veins in Mounds in Ariadnes Colles

The Ariadnes Colles region is a large basin in the southern highlands covered by mounds. The mounds expose bedrock riddled with light-toned veins of mineral-filled fractures. This suggests hydrothermal alteration: hot water carried and deposited minerals. On Earth, heat-loving microbes thrive in such settings.

uahirise.org/hipod/ESP_082678_
NASA/JPL-Caltech/University of Arizona

Clinoforms in Melas Chasma

The layered deposits in Melas Basin may have been deposited during the growth of a delta complex. This depositional sequence likely represents a period where materials were being deposited on the floor of a lake or running river.

uahirise.org/hipod/PSP_008735_
NASA/JPL-Caltech/University of Arizona

HiRISE 10K: Layered Sediments in Tithonium Chasma

This image shows a large outcrop of layered rock in Tithonium Chasma, a part of the Valles Marineris trough system.

Full cutout on Flickr: flic.kr/p/2q6iDof

NASA/JPL-Caltech/University of Arizona

HiRISE 3D: Gullies on Wall of Matara Crater

This image was requested to study even the tiniest of streamlines for drainage profiles for one of the larger gullies in this locale.

uahirise.org/anaglyph/ESP_0836

NASA/JPL-Caltech/University of Arizona

Layered Mantling Deposits in the Northern Mid-Latitudes

These deposits accumulate over cycles in layers, and here in the southern mid-latitudes, where the deposits have mostly eroded away due to warmer temperatures, small patches of the remnant layered deposits can still be observed.

uahirise.org/hipod/ESP_048897_
NASA/JPL-Caltech/University of Arizona

NASA’s Perseverance Rover Scientists Find Intriguing Mars Rock – The six-wheeled geologist found a fascinating rock that has some indications it may have hosted microbial life billions of years ago, but further research is needed.

nasa.gov/missions/mars-2020-pe

HiRISE 8K: Cerberus Fossae Fissures

This image shows several parallel segments of the Cerberus Fossae. This is a system of fissures formed by extension and stretching of the near-surface of Mars.

Full cutout on Flickr: flic.kr/p/2q6acXZ

NASA/JPL-Caltech/University of Arizona

HiRISE 3D: A Well-Preserved Impact Crater with Extensive Secondaries

This re-image was requested to confirm as to whether or not the crater here is responsible for all the secondaries observed on the steep slopes directly to the west of the impact site.

uahirise.org/anaglyph/ESP_0832

NASA/JPL-Caltech/University of Arizona

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HiRISE (NASA)

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