Tuesday, October 4, 2016

The Grand Teton Range in West Central Wyoming, south of Yellowstone National Park. The Tetons lie to the north of Jackson, Wyoming. These mountains are quite stunning because of their composition and the fact that they have no foothills---they jut out of the earth in a very dramatic way. The reason for their appearance is that these peaks are pushed up by earthquakes that do two things: the mountains are thrust upward and the valley floor falls as a massive slab of stone and earth. The rock that composes the Tetons is extremely old (2-3 billion years!) and is mainly igneous: granite and gneiss. These lovely peaks are swaddled in millions of lodge pole pines and deciduous trees. Winding below these peaks is the Snake River. This photograph was taken early in the morning (about 7:30 am) with a Canon 6D and a Sigma 24-70mm lens set at 24mm. f/11; shutter set at 1/60. ISO on auto.

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