| Desert Varnish | |
| View looking northwest with Henry Mountains just visible (60 miles / 100 km) in distance. The dark black color on the near rocks is a superficial coating of desert varnish formed of clay, silica, manganese, and iron particles carried by the wind. In this area, most of the desert varnish forms very slowly on the exposed vertical surfaces. | |
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| 6.jpg 2016-10-15 11:04:37 6 of 10 | |
