Tag Archives: geology

Sandstone Cliff, Morning Light

Sandstone Cliff, Morning Light
Detail, sandstone cliff in morning light, Arches National Park.

Sandstone Cliff, Morning Light. © Copyright 2012 G Dan Mitchell – all rights reserved.

Detail, sandstone cliff in morning light, Arches National Park.

While I often refer to this part of the world as “red rock country,” in truth the rock is rarely actually red, and its coloration changes radically depending on when and where you see it. In deep canyons it can become, in objective terms, almost purple. At sunset or sunrise it edges far into the warm portion of the spectrum, varying on gold, orange, or yellow. In flat light the intensity of the color diminishes. In some places colors on the surface of the rock are striking — either from material that coats it or the variations between old and new sections.

As I work on photographs I often have several open on my computer at once, with some of them staring back at me for weeks as I put off final decisions about how to interpret them. Recently there have been mostly photographs of this red rock country, and looking at those together has reinforced just how varied these colors are. This section of a cliff face at Arches National Park was photographed in very early morning light that shone at a low angle almost directly onto the the rock, and this light reveals details of the face that might not otherwise be seen with such clarity.


G Dan Mitchell is a California photographer and visual opportunist. His book, “California’s Fall Color: A Photographer’s Guide to Autumn in the Sierra” is available from Heyday Books and Amazon.

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Canyon Wall

Canyon Wall
Broken boulders and strata at the base of a slot canyon wall.

Canyon Wall. © Copyright 2012 G Dan Mitchell – all rights reserved.

Broken boulders and strata at the base of a slot canyon wall.

These canyons are simply full of fascinating details. Unlike much of my familiar Sierra Nevada landscape, where vistas can often go on for many miles, here the size of your world is much smaller. It is constricted to the width of the canyon, the distance to the upper rims (plus some sky), and upstream and downstream to only the next bends. So you are almost forced to focus on smaller details, of which there are many.

Here my attention was drawn to the rocks. I’m no geologist, and I only know enough to speculate about these things. But a close look at the rocks in this scene show material that was created in layers. Near the upper right corner, if you look closely, you can spot a place where there is a striking convergence of angles in the strata. And although this material was laid down in horizontal layers, over time it has been pushed and stretched and lifted until the formerly horizontal now angles up distinctly to the left. There is also an interesting almost vertical fracture between the more solid (and darker) rock on the right, and the lighter color of the broken rocks stacked up on the left.


G Dan Mitchell is a California photographer and visual opportunist. His book, “California’s Fall Color: A Photographer’s Guide to Autumn in the Sierra” is available from Heyday Books and Amazon.

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Edges

A conjunction of striated sandstone in a Utah canyon.

Edges. © Copyright 2012 G Dan Mitchell – all rights reserved.

A conjunction of striated sandstone in a Utah canyon.

I photographed this somewhere in Utah, almost certainly in Grand Staircase-Escalante National Monument, and I’m pretty sure I remember which little canyon I was walking through… but I can’t say that I recall the exact spot. We had driven to a rather out-of-the-way location, wandered up a shallow stream, and entered a lovely, quiet, light-filled canyon full of the usual twists and turns.

The canyon presented a veritable feast of photography — plants, reflections of sky and canyon walls in the water, sand, red rock walls, and more. Given the narrowness of the canyon, the subjects all belonged to the “intimate landscape” genre, and it was rare to have a view of anything more than a few yards away. And everywhere the star of the show was there light reflected down from above and bouncing off the sandstone canyon walls.


G Dan Mitchell is a California photographer and visual opportunist. His book, “California’s Fall Color: A Photographer’s Guide to Autumn in the Sierra” is available from Heyday Books and Amazon.

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Red Rock Face

Red Rock Face
Detail of a sandstone face, Capitol Reef National Park.

Red Rock Face. © Copyright 2012 G Dan Mitchell – all rights reserved.

Detail of a sandstone face, Capitol Reef National Park.

Many times when I have photographed in red rock country I find myself looking for other subjects that work with the sandstone to produce compositions — juxtapositions of features, trees, a bit of sky or clouds, water, light and shadow, and all of the other things that are part of the experience of this Southern Utah landscape. But at times it strikes me that the rock itself can be the entire subject. This is one of those photographs.

These masses of sandstone are remarkable on their own. They may first seem somewhat undifferentiated, but a closer look in the right light — in my view, the shaded light in canyons is ideal — reveals remarkable variations and detail. The color of the rock varies greatly depending upon time of day and, especially, the color of reflected light bouncing between anyone walls. Cracks and imperfections mark the rock even on the smoothest sections. And an infinite variety of markings combine on the surface — internal irregularities, color differences where the surface has been disturbed, and everywhere vertical lines formed by seeping and flowing water.


G Dan Mitchell is a California photographer and visual opportunist. His book, “California’s Fall Color: A Photographer’s Guide to Autumn in the Sierra” is available from Heyday Books and Amazon.

Blog | About | Flickr | FacebookEmail

Links to Articles, Sales and Licensing, my Sierra Nevada Fall Color book, Contact Information.

Scroll down to leave a comment or question.


All media © Copyright G Dan Mitchell and others as indicated. Any use requires advance permission from G Dan Mitchell.