Tag Archives: geology

Ledge With Fallen Rocks

September 10, 2012 G Dan Mitchell Leave a comment

Red cliffs and rocks on a ledge at Park Avenue, Arches National Park.

I made this photograph fairly early in the morning at the Park Avenue area of Arches National Park. While morning might was hitting the walls behind my camera position, the walls in front of me were still in fairly deep shade. However, as the sun rose, its light began to come over the tops of these tall sandstone walls and spill down into the canyon. As the morning wore on, the light/shadow line began to move back closer to this wall, first illuminating the ledge and the fallen rocks in holds and then beginning to highlight edges of some of the cracks in the wall itself.

The Park Avenue area seems like one of the most accessible areas of this park being only a short distance inside the park boundaries and being very close to the roadway. The area is essentially a canyon between two nearly parallel walls of sandstone, often topped with remarkable towers and other features as the canyon descends toward where it opens up into sage brush country below. At this particular hour of this particular morning, as wonderful as that scene was, the light shooting down the canyon was only so-so, so I looked around, put on a long lens, and photographed smaller vignettes of the landscape such as this one.

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Photographs: Desert, Photographs: Mono Lake Basin, Photographs: Nature, Photographs: Northern California, Photographs: Owens Valley

Sand Tufa, Mono Lake

July 19, 2012 G Dan Mitchell Leave a comment

Early morning light on details of sand tufa formations, Mono County.

I have wanted to photograph this subject for some time. The sand tufas are not found in the same location as the better-known “tufa towers” that are so often photographed, and they are smaller and somewhat subtler (if that is the right word) subjects. If you weren’t aware of what you were looking for, it would be very easy to pass right by them and barely notice their presence at all. They also appear to be very fragile, so great care should be taken if you ever happen to come across them. Walk around, not over or through them, and minimize your impact on them to the greatest extent possible. If you come across examples, it is probably best to not blast a lot of specific information to the world. I don’t know all of the details of their formation, but judging by their locations and by the recent history of lower lake levels, I suspect that they may have been underwater before the historically recent extraction of water from the eastern Sierra by Los Angeles.

If you are thinking of looking for an interesting and easy to shoot photographic subject, don’t bother with the sand tufa. You’ll probably have much better luck and more fun shooting the impressive and better known and larger “tower” features at other areas. These small structures do not tower above anything. Some are only inches tall, and the largest are just a few feet tall. Their natural color is a muted and, let’s be honest, boring gray color. Their location does not particularly allow them to be paired with more impressive and distant large-scale landscape features such as the expanse of the lake’s surface or the surrounding mountains and hills, with the possible exception of certain kinds of cloud formations. When I went there I had some pre-conceived ideas about I might photograph them, perhaps including the Sierra’s eastern escarpment in the images, but these ideas did not pan out. However, by shooting in the first few minutes of light and working with a long focal length to crop tightly I found some interesting fluted patterns to work with.

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

Murphy Point, Sunset

May 25, 2012 G Dan Mitchell Leave a comment

Sunset light on Murphy Point, photographed from Green River Overlook, Canyonlands National Park.

We spent the better part of a day scouting around the “Island in the Sky” section of Canyonlands National Park, partly with the goal of figuring out where to be for golden hour light. In the end, the very first place we had really considered ended up being the place we came back to – the Green River Overlook. While quite a few landscape photographs can be somewhat spontaneous and a matter of quickly taking advantage of ephemeral conditions, the decision to photograph at the Green River Overlook was quite the opposite. Not only had I decided that I wanted to shoot at this location, but I had even worked out the composition of the shot that I wanted.

With that in mind, we came back here almost an hour before actual sunset, confident that the photograph I had in mind would be waiting for me. And it was! That photograph was shot looking roughly west or a bit south of west and across the canyons dropping into the Green River. But I also had quite a bit of time to look around at other possible subjects as the light slowly transformed. The steep upper cliffs of (what I believe to be) Murphy Point stood to my south and the sunset light began to intensely color their red rocks during the final few minute of sunlight. So I took a moment away from the shot I had come for, pivoted the tripod this direction, and made a few exposures. The geology seen in this area is amazing. Layer upon layer build from the bottoms of the river canyon, through the side canyons and onto the lower plateaus. Then shattered rock stacks up against the tall upper sandstone cliffs that are topped by the relative flatlands of the “Island in the Sky” area. Here the low angle side-light from the setting sun reveals a lot of the more subtle details of this landscape.

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

Sandstone Towers, Moon Rising Through Clouds

May 24, 2012 G Dan Mitchell Leave a comment

The full moon rises in a cloudy sky above sandstone towers, Arches National Park, Utah.

These rocks are near but not exactly part of the windows area at Arches National Park, where we ended up at the end of our first day there. We had arrived in Moab in the afternoon and then driven up into the park very late in the day – more or less gasping in amazement at the geology we were seeing for the first time – and finally ended up in this area just before sunset.

I’m repeating a story I wrote about earlier, so I’ll make the first part short. There was beautiful light leading up to sunset, and there were some interesting clouds in the sky to the north. However, it was extremely windy, making longer exposures as the light faded a real challenge and also making lens changes unwise. After sunset I ended up in the shelter of some rock towers where I found some protection from the wind. I knew that this was going to be a full moon night, but I was a bit concerned that by the time it was high enough that the ambient light would be somewhat dark, making it very difficult to photograph the twilight surroundings and the very bright moon in a single exposure. But as the moon rose and I found a location from which I could position it and the rocks together, high thin clouds partially obscured the moon and allowed my longer exposures for the dim foreground to work. I might have used a longer lens, but the thought of changing lenses in the blowing wind convinced me to just go ahead and shoot with the lens I already had on the camera – and in the end I think that let me produce a more natural view of the moon than I might have achieved with a longer telephoto.

G Dan Mitchell Photography

Tag Archives: geology

Ledge With Fallen Rocks

Sand Tufa, Mono Lake

Murphy Point, Sunset

Sandstone Towers, Moon Rising Through Clouds

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