It would be nice to know what the composition of those rocks/layers are. Nice photo though.

The press release actually sayng this:

[A mosaic of daytime infrared images of the layered Terra Meridiani region shows a complex geology with craters and eroded surfaces, exposing at least four distinct layers of rock. Though the image does not include the infrared "colors" of the landscape (showing surface mineral composition), it does map the temperatures of the features, with surprising results.]

[Odyssey's imaging team is working on fully processing the infrared images,]

Marcia
-NASA used to have photos and original excellent scientific descriptions and reports of the Viking missions readily available on line.... not anymore. I found a few images here.