Tag Archives: exfoliate

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

The Shadow Line

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The Shadow Line
The boundary between morning sunlight and shadow traverses granite slabs

The Shadow Line. Yosemite Valley, California. February 26, 2017. © Copyright 2017 G Dan Mitchell – all rights reserved.

The boundary between morning sunlight and shadow traverses granite slabs

These slabs on the lower face of the Glacier Point apron always attract me, especially in the morning. I go way back with them — many years ago when I was, for a short time, a budding rock climber, we climbed on them, testing the limits of our trust in friction. Today, when I’m in this section of the Valley early in the morning, I always watch for the arrival of the first sun on the slopes.

I was in a cold meadow before sunrise on this winter morning. Soon the first light began to touch the cliffs along the north side of the Valley, and then trees along the upper rim near Glacier Point picked up the light. It worked its way slowly down the immense face, and the light final streamed through gaps behind Half Dome and slanted across this slope and revealed the cracks and scallops on the weathered granite.

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

Fractured Slab

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Fractured Slab
Fractured Slab

Fractured Slab. Yosemite National Park, California. September 7, 2014.© Copyright 2014 G Dan Mitchell – all rights reserved.

Stained and fractured rock slabs in the Yosemite National Park backcountry

This “intimate landscape” photograph of what is, objectively speaking, no more than a crack separating two pieces of granite actually tells a number of more interesting and complex stories. At least one of them is a story of the events of the day on which the photograph was made, while others are much older stories, bits of which can be seen in the rocks.

The story of this day involved wildfire. On the day we arrived at our camp in this area, the Yosemite “Meadow” fire took off in the area bounded roughly by Half Dome, Clouds Rest, and Mount Starr King. There was barely any smoke visible in the early morning, but as winds rose to surprising levels, the fire took off… and by late in the day the sky was filled with smoke that sometimes blotted out the sun and turned the sky an odd yellow-brown color. These rocks are stained a sort of reddish-brown, but the warm colors are enhanced a great deal by this smoky light. The older stories are complex and I cannot attempt to tell them completely here, but there are a few things to notice and think about in this rock scene. The area was glaciated, and the smooth rock surface at lower left and lower right is glacial polish, which provides evidence of the slow, grinding passage of an ancient glacier. The crack in the exfoliated granite provides evidence of other forces of weather that work slowly but irresistibly to weather and break up even this strong granite.

G Dan Mitchell is a California photographer and visual opportunist whose subjects include the Pacific coast, redwood forests, central California oak/grasslands, the Sierra Nevada, California deserts, urban landscapes, night photography, and more.
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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: Nature, Photographs: Northern California, Photographs: Sierra Nevada, Photographs: Yosemite

Fractured Granite Ledges

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Fractured Granite Ledges
Fractured Granite Ledges

Fractured Granite Ledges. Yosemite National Park, California. July 27, 2011. © Copyright 2011 G Dan Mitchell – all rights reserved.

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.

G Dan Mitchell Photography
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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.

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