Happy Thanksgiving! Arch Leftovers   2 comments

To all of my U.S. friends I wish a Happy Thanksgiving.  And I send the same wishes to anyone else who might choose this day to give thanks for this wonderful world (and universe!) we all are privileged to live in.  (To Canadians, sorry I’m late!)  I am most thankful for all of you, who are sticking with me on my blog, even though I’ve not been great about checking out all your blogs while I’ve been on the road.  Thanks for this!

With so much food around on Thanksgiving it’s certain there will be leftovers.  Leftovers (and specifically turkey sandwiches) were always one of my favorite things about Thanksgiving.  So I’m posting this recent image I have titled Arch Leftovers.  It’s a picture I captured at Arches National Park in Utah.

When arches form by weathering and erosion from the sandstone fins in Arches and the surrounding region, one question comes up.  Where does the rock that occupied the spaces go?  Believe it or not, this is a great scientific question.  Weathering breaks the blocks that fall from the forming arches into smaller and smaller pieces. Eventually you end up with sand.  Since water does run in the desert washes, however infrequently, you’re safe assuming that most of the sand is carried away in streams. Actually, most is transported down to the nearby Colorado in dramatic flash floods.

Because this is a treeless desert region, erosion by wind, though it takes a back seat to water, is quite prevalent.  Sand is picked up by strong winds and, like sandpaper, wears away and sculpts the arches and spires in the park.  When it has done its job, the sand is unceremoniously dumped, unneeded and forgotten, into dunes.

These are not dunes the size of those in the big sandy deserts of the world.  Water carries away much of it before it can accumulate into big dunes.  Nevertheless the dunes that do pile into alcoves and niches in the cliffs take on graceful shapes and curves, especially in beautiful late day light.  It was windy just before sunset when I shot this, and the blowing sand gives the dunes a certain soft texture.

The wind blows often in Arches National Park, Utah, and these small dunes accumulate near the sculpted arches from which they are eroded.

Arch Leftovers.  Please click on the image for purchase options.  It’s copyrighted and not available for free download.  Thanks!

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2 responses to “Happy Thanksgiving! Arch Leftovers

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  1. Have a good one, and thank you for sharing such wonderful photography of such astonishing places.

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