Tag Archives: fracture

Photographs: Nature, Photographs: Sierra Nevada

Patterned Cliff Face, Detail

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Patterned Cliff Face, Detail
A small section of shaded Sierra Nevada cliff reveals remarkable details of dikes, fractures, color, and stains

Patterned Cliff Face, Detail. © Copyright 2018 G Dan Mitchell – all rights reserved.

A small section of shaded Sierra Nevada cliff reveals remarkable details of dikes, fractures, color, and stains

Most often when I think of large rocky faces in the Sierra Nevada, the clean, smooth, and almost uniform faces of Yosemite granite come to mind — large expanses of nearly unbroken rock shaped by glaciers. However, when I get into the high country and the other areas of the range I am reminded that things aren’t quite so simple. In places you can find mountains cut through by giant dikes of non-granite rock, or you might encounter the remnants of more ancient layers that lay above the granite intrusions and today give us red, black and other colors of material.

Since I’m no geologist, I can’t explain the details of the face in this photograph, but I can share a few observations. It is the headwall of a high bowl that contains a subalpine lake, and the area does show signs of glaciation. The fact is gigantic, and this is just a small section. It is far from uniform, with mostly gray rock cut through by thick intrusions of lighter material, and the whole thing cracked and fractured. In many places the surface has been deeply stained as water has flowed or seeped across it.

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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: Sierra Nevada

Fractured Rock

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Fractured Rock
Detail of a fractured rock wall in the John Muir Wilderness

Fractured Rock. © Copyright 2018 G Dan Mitchell – all rights reserved.

Detail of a fractured rock wall in the John Muir Wilderness

There are quite a few “photographer jokes” that you’ll hear if you hang out long enough with these folks. (I should make a list sometime!) Some of them come up in answer to the common question, “What did you photograph?” (A variation on, “What are you photographing?” and not totally unrelated to, “Did you get anything good?”) In a lot of cases, when asked the “what did you photograph?” question, you have choices: given a long answer (often the truest response) and make your questioner wish they hadn’t brought it up, give a very short superficial answer, or make a joke. One joke answer among some folks I know and sometimes photograph with is a cheery, “Rocks, water, and trees!”

If you have been watching recent photographs from this location in the Eastern Sierra Nevada, you may be forgiven for noting that in some cases I seem to have been reducing the subjects from “rocks, water, and trees” down to the minimal, “rocks…” This is — obviously! — one such example. It is the sort of thing that most folks would probably not see, since it wasn’t in an obvious place and is in a location where you could easily walk past while looking at other, larger things. But I wasn’t looking for the obvious, at least not only for the obvious, so I stopped here and poked around a bit, discovering a small section on a larger rock fact where the remnants of an old layer of pink rock were gradually breaking away from the underlying gray material. One more thing — when I make a photograph like this one, focusing on some compositional aspect of some small and non-iconic thing, I often think of the photographs of Mike Osborne, one of the original “First Light” photographers and a person with a unique and wonderful way of “seeing” the Sierra Nevada landscape.

See top of this page for Articles, Sales and Licensing, my Sierra Nevada Fall Color book, Contact Information and more.

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

Photographs: Nature, Photographs: The Southwest, Photographs: Utah

Fractured Sandstone Cliff

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Fractured Sandstone Cliff
A fractured sandstone cliff and fallen boulders

Fractured Sandstone Cliff. Capitol Reef National Park, Utah. October 26, 2012. © Copyright 2012 G Dan Mitchell – all rights reserved.

A fractured sandstone cliff and fallen boulders

A few years back a small group of us spent time photographing in southern Utah, from Capitol Reef National Park to the east to Zion National Park to the west and at points in between. The day when I made this photograph began very early in sub-freezing conditions, walking out on a route along a remote ridge. But we ended that day back in a more civilized location, at a canyon with tall sandstone walls, in places forming abrupt cliffs and in other areas being fractured and covered with some amount of vegetation.

We came to this section just after sunset, which comes a bit early in this spot since the terrain to the west of the part tilts gradually upwards. The spot where we photographed is along a gravel road, and on both sides it is lined with monumental sandstone cliffs that are fundamentally smooth and blocky. However, even such cliffs erode, and here the process is laid bare. Huge vertical slabs are separating from the walls and leaning away, and the bases of the cliffs are filled with broken material topped with giant boulders.

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.