<p>I think this is the boundary between the Wingate sandstone and the Chinle formation 
<a href="https://en.wikipedia.org/wiki/File:Capitolreef_strat.jpg" class="extiw" title="en:File:Capitolreef strat.jpg">en.wikipedia.org/wiki/File:Capitolreef_strat.jpg</a>
</p><p>Seen while hiking in Cohab Canyon, Capitol Reef National Park.
</p>
gc 040
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/93452909@N00">brewbooks</a> from near Seattle, USA
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/brewbooks/5045384969/">Chinle formation</a>