Tag Archives: geology

Photographs: Nature, Photographs: Northern California, Photographs: Sierra Nevada, Photographs: Yosemite

Fractured Granite Ledges

August 22, 2011 G Dan Mitchell Leave a comment

Exfoliated and fractured granite ledges form patterns in late afternoon light, Yosemite National Park.

While this particular spot happens to be in the neighborhood of Tenaya Creek, similar features may be found throughout Yosemite and in many other parts of the Sierra. These rocks have probably been eroded in just about every way possible. They have been broken away from the underlying rock via exfoliation. The area was obviously glaciated. No doubt freezing water helped to widen the patterns of cracks and break up the rocks.

I made the photograph in late afternoon light when the sun was just barely above a low ridge beyond the upper edge of the photograph. The zoom was cranked out as wide as it goes in order to capture a good width and density of these wonderfully broken up rocks and the trees and other plants that somehow manage to live on and among them.

Text, photographs, and other media are © Copyright G Dan Mitchell (or others when indicated) and are not in the public domain and may not be used on websites, blogs, or in other media without advance permission from G Dan Mitchell.

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Photographs: Nature, Photographs: Northern California, Photographs: Sierra Nevada, Photographs: Yosemite

Granite Domes and Trees, Morning

August 12, 2011 G Dan Mitchell 3 Comments

Morning light on trees and glaciated ridges, Yosemite National Park.

It is now 11:23 p.m. PDT on Friday, August 12… and I just realized a few moments ago that I neglected to schedule the posting of a new photograph today! Before I left for Yosemite on this past Wednesday I thought I had placed a photograph in the queue for automatic posting today, but apparently not. As long as I complete this post in the next half hour or so, I won’t miss posting my daily photograph!

I made this photograph early today (Friday, August 12) as the first light was striking the glaciated ridges near Olmsted Point. I had arrived early enough to climb far up on the granite slopes above the famous overlook before the sun came up – I had a plan to photograph some of the solitary trees high on these granite slabs as the first light struck them. I accomplished that, and as I began to descend from this area I decided to make a few more photographs while I was up there. Across the nearby canyon is another ridge that is topped by the glacial erratics, the solitary boulders sitting on top of the rounded ridges and just about anywhere else in this part of Yosemite. The early light was coming across from the left and striking the tops of these ridges, but it had not yet struck the huge face of Clouds Rest, seen behind them.

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Photographs: Death Valley, Photographs: Desert, Photographs: Nature, Photographs: Textures

Zabriskie Point Gully, Morning Light

April 1, 2011 G Dan Mitchell 1 Comment

Morning sun back-lights the dense pattern of folds in a small gully at Zabriskie Point, Death Valley National Park, California.

In some ways I think this is one of the more subtle and complex of the various photographs I have made that isolate small sections of the Zabriskie Point landscape, especially the eroded patterns of the small gullies below the main viewing area. This photograph, like many in this series, was made after the normal “dawn light” time period, and at this time the sun is higher in the sky. It begins to back-light the tops of the furrows and gullies and the brighter light reflects down into the lower portions of the gully. There are a tremendous number of overlapping ridges and the color variations are quite large, though subtle at the same time. Some areas have a very blue cast, being in shadow and lit almost completely by the open blue sky. Others take on warmer tones, especially if they are illuminated by light reflected from the warm-tones earth. An area of thin clouds was floating above the scene and its shadow slightly softened and muted the light that otherwise might have been quite stark.

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Text, photographs, and other media are © Copyright G Dan Mitchell (or others when indicated) and are not in the public domain and may not be used on websites, blogs, or in other media without advance permission from G Dan Mitchell.

Photographs: Central California, Photographs: Nature, Photographs: Northern California, Photographs: Ocean & Coast, Photographs: Textures

Eroded Sandstone, Point Lobos

March 29, 2011 G Dan Mitchell 5 Comments

Patterns in eroded shoreline sandstone rocks at the Point Lobos State Reserve, California.

The rugged Point Lobos shoreline in places exposes some very interesting rocks, including sections like this one where layers of different colored sand stone are gradually worn away, revealing underlying layers of different colors and textures and sometimes exposing surprising color contrasts. On days when the light is very soft (or very boring!) I may seek out some of these rocks and photograph them since the softer light lets details appear that might easily be washed out in harsher light.

Photographer and visual opportunist. Daily photos since 2005, plus articles, reviews, news, and ideas.