There are possible Mawrth-Vallis type pedogenic clay sequence close to a proposed ExoMars landing site. (“Pedogenic” refers to the formation and development of soil.) CRISM detections are consistent with two-composition clays interpreted as weathering sequences. A HiRISE image can help to confirm this by looking at the clay stratigraphy.

ID: ESP_064076_1890
date: 28 March 2020
altitude: 276 km

https://uahirise.org/hipod/ESP_064076_1890
NASA/JPL-Caltech/UArizona
#Mars #science #NASA