This scene is a jumbled mess! There are blocks and smears of many different rocks types that appear to have been dumped into a pile.

That’s probably about what happened, as ejecta from the Isidis impact basin to the east. This pile of old rocks is an island surrounded by younger lava flows from Syrtis Major.

Written by: Alfred McEwen  (2 March 2017)

More info and image formats at http://hirise.lpl.arizona.edu/ESP_011261_1960

Image: NASA/JPL/University of Arizona