Dark Light
Also visible in a Context Camera image, our high resolution picture shows layers exposed where the crater ejecta has been eroded.

Some of the layered material is light-toned. Rocks containing sulfates have a light tone compared to isolated rocks examined by landers and rovers at other locations on Mars. Rocks in Meridiani have strong evidence for past water, including the mineral jarosite.

Image: NASA/JPL/University of Arizona https://www.uahirise.org/hipod/ESP_064524_1835
Related Posts
Sunken and Pitted Ejecta

Sunken and Pitted Ejecta

The objective of this observation was to examine the edge of impact ejecta from a crater to the north-west of this area (north is up, west is to the left).

Secondary Craters

This image of a southern mid-latitude crater was intended to investigate the lineated material on the crater floor. At the higher resolution of HiRISE, the image reveals a landscape peppered by small impact craters.