<p>Martian Meanders and Scroll-Bars – Channels become inverted when the sediments filling them become more resistant to erosion than the surrounding material. Here, the most likely process leading to hardening of the channel material is chemical cementation by precipitation of minerals.
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NASA/JPL/University of Arizona (<a rel="nofollow" class="external text" href="http://www.uahirise.org/ESP_020673_1750">www.uahirise.org/ESP_020673_1750</a>)
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/71688597@N05">UAHiRISE (NASA)</a>
2017-03-07 09:10
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/uahirise-mars/32464815674/">ESP_020673_1750</a>