Zion Canyon Wall Detail
by Gregory Scott
Title
Zion Canyon Wall Detail
Artist
Gregory Scott
Medium
Photograph - Photograph
Description
Detail on a wall showing the detail of the dark regions of desert varnish.
Uploaded
April 14th, 2012
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Comments (1)
Nadine and Bob Johnston
Never heard it called varnish before, we learn something new every day. Good very fine detail
Gregory Scott replied:
From Wikipedia: Desert varnish, or rock varnish is a orange-yellow to black coating found on exposed rock surfaces in arid environments. Desert varnish is usually around one micron thick and present nanometre-scale layering.[1] Rock rust and desert patina are other terms which are also used for the condition, but less often. I either heard the term from park rangers or read it on displays in parks.
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