Dark Light
This image samples the excellent bedrock exposures north of Terby Crater, which lies on the northern rim of the giant Hellas basin.

An enhanced-color cutout shows a sample of this bedrock, which has a variety of colors and textures. The warm-colored bedrock probably contains hydrated minerals such as clays, whereas the blue-green bedrock is dominated by unaltered mafic minerals. These may be some of the oldest rocks exposed at the Martian surface. Such ancient rocks are extremely rare on Earth. 


Image: NASA/JPL/University of Arizona https://www.uahirise.org/hipod/ESP_045335_1535
Related Posts

A Tale of Collapse Terrain

North of Ganges Chasma lies Orson Welles Crater, whose floor contains broken up blocks we call chaotic terrain and which is the source for the major outflow channel Shalbatana Vallis.

Soffen Crater Floor

Dr. Gerald A. Soffen (February 7, 1926 — November 22, 2000) was a project scientist for the NASA’s Viking program of Mars landers.

The Saga of Airy-0

Up to now, we’ve never imaged Airy-0, a crater within Airy Crater that formerly was used to define zero longitude on Mars.