CRISM image: phyllosilicates in a Tyrrhena Terra crater rim

This image shows layers clays and clay-like minerals called phyllosilicates that are exposed in Tyrrhena Terra, part of Mars’ ancient, heavily-cratered southern highlands. Tyrrhena Terra is roughly 2,300 kilometers (1,430 miles) across, about the size of Earth’s continent of Antarctica! Magenta colors show exposures of phyllosilicates rich in the elements iron and magnesium in the wall of the crater. This composition… [More at link]