Patterns In Granite. © Copyright 2018 G Dan Mitchell – all rights reserved.
Patterns in a section of Yosemite Valley granite
Of all the things that characterize and define Yosemite, rock may be the most important. The Valley itself is lined with huge granite* forms in the shapes of domes and cliffs and more, carved by water, glaciers, and slow erosion. Wandering about the Valley one eventually becomes aware that the granite “moves,” and that giant chunks have fallen from the surrounding heights and sometimes managed to travel a good distance into the valley — a sobering thought. This rock continues into the high country, where some of the same features are found, along with others — the glacial “erratics” left behind as ice retreated, places were rivers flow across smooth rock, meadows dotted with boulders.
The character of granite on the large scale is hard to miss, but its character close up is also fascinating. Many years ago, for a few years, I was a bit of a rock climber. As a climber one gets “up close and intimate” with rock, learning (and remembering the tactile qualities) of the rock — smooth, straight cracks, rough, covered by lichen, disintegrating, marked by water, and more. That may explain why this little spot caught my attention. Quite a few stories are in this rock. It lies at the base of some very large cliffs, suggesting its source. It is covered by lichen, part of the reason for the color variations. Stained streaks produce vertical lines, and one odd section, which must be harder than the rest, angles up from left to right.
- A geologist friend has pointed out to me in the past that “granite” is not a technically correct blanket description for the rock of Yosemite. I’m using the term in the casual and familiar sense. And for those who get this far, did you notice a compositional link to the recent redwing blackbird photograph? :-)
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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