Tag Archives: University of Arizona

HiRISE: On the contemplation of the stratigraphy of another planet

Posted on February 8, 2018 by rburnham

On the contemplation of the stratigraphy of another planet. 255  km above the surface. This image uses the infrared-red-blue filter of the HiRISE camera. Beautiful Mars series.

Posted in Reports | Tagged , , , , , , , , , , , | Comments Off

HiRISE: Splitting slope streaks

Posted on February 8, 2018 by rburnham

Streaks form on slopes when dust cascades downhill. The dark streak is an area of less dust compared to the brighter and reddish surroundings. What triggers these avalanches is not known, but might be related to sudden warming of the … Continue reading →

Posted in Reports | Tagged , , , , , , , | Comments Off

HiRISE: Gullies and voids

Posted on February 7, 2018 by rburnham

Intricate gullies have formed on the northern wall of this impact crater located in the Terra Cimmeria region. This crater may have formed in a region rich in ground water. This ground water likely flowed down the wall, eventually eroding … Continue reading →

Posted in Reports | Tagged , , , , , , , | Comments Off

HiRISE: Geologic history revealed in Valles Marineris

Posted on February 5, 2018 by rburnham

An enhanced-color image reveals bedrock that is several kilometers below the top of the giant Valles Marineris canyons. The upper layers have relatively little diversity of colors and textures, but deeper levels show more complex processes. The upper layers could … Continue reading →

Posted in Reports | Tagged , , , , , , , , , | Comments Off

HiRISE: Holden Crater dunes

Posted on February 5, 2018 by rburnham

Holden Crater dunes. 260 km above the surface. Black and white is 5 km across, enhanced color is less than 1 km. Beautiful Mars series.

Posted in Reports | Tagged , , , , , , , , , | Comments Off

HiRISE: Traipsing across Terra Sirenum

Posted on February 2, 2018 by rburnham

Traipsing across Terra Sirenum. Terra Sirenum is named after the Sirens who were birds with the heads of girls. In the Odyssey these girls captured passing seamen and killed them. Let’s hope future human exploration of this region is less … Continue reading →

Posted in Reports | Tagged , , , , , , , | Comments Off

HiRISE: Diverse composition and stratigraphy in the Claritas Region

Posted on February 1, 2018 by rburnham

Diverse composition and stratigraphy in the Claritas Region. This region, west of Solis Planum, is a tectonic and volcanic area located south-east of the Tharsis volcano group (the Tharsis Montes) on the Tharsis rise. It extends roughly north to south … Continue reading →

Posted in Reports | Tagged , , , , , , , , , , , | Comments Off

HiRISE: Ejecta and possible bedrock on a crater floor in Aonia Terra

Posted on January 31, 2018 by rburnham

Ejecta and possible bedrock on a crater floor in Aonia Terra. This is just to the east of an impact crater that is almost dead center within a much larger impact crater. (249 km above the surface; black and white … Continue reading →

Posted in Reports | Tagged , , , , , , , , , | Comments Off

HiRISE: Contact between fluvial units in Aeolis Dorsa

Posted on January 30, 2018 by rburnham

Contact between fluvial units in Aeolis Dorsa. Beautiful Mars series.

Posted in Reports | Tagged , , , , , , | Comments Off

HiRISE: Clays of Ladon Basin

Posted on January 25, 2018 by rburnham

Ladon Basin was a large impact structure that was filled in by the deposits from Ladon Valles, a major ancient river on Mars. These wet sediments were altered into minerals such as various clay minerals. Clays imply chemistry that may … Continue reading →

Posted in Reports | Tagged , , , , , , , , , , | Comments Off