#Mars #HIPOD #stratigraphy #graben ✨

Enhanced colour satellite image cutout showing gullies with visible boulders.

Mars #HiPOD: Boulders in Southern Hemisphere Gully Alcoves

In winter, this area gets covered by a layer of dry ice. In spring the Co2 ice warms up, sublimating to gas and dislodging materials on the slope forming a gully.
www.uahirise.org/hipod/ESP_03...
NASA/JPL-Caltech/UArizona
#Mars #NASA

The warm (yellowish-reddish) colours mark the presence of minerals altered by water, whereas the bluish and greenish rocks have escaped alteration. Sharp-crested ridges and smooth areas are young windblown materials.

#HiRise #Mars #HiPOD | 11th November, 2023

This image shows part of the central uplifted region of an impact crater more than 50 kilometres wide. That means that the bedrock has been raised from a depth of about 5 kilometres, exposing ancient materials.
www.uahirise.org/ESP_021545_1...

Windblown iron and magnesium-rich sand covers intricate sedimentary rock layers in this HiRISE Picture Of the Day from Ganges Chasma, a canyon in the Valles Marineris system on Mars.

#HiPOD 4/11/2023
NASA/JPL-Caltech/UArizona
#Mars #science #NASA

www.uahirise.org/hipod/ESP_01...