From the front, Half Dome looks like a granite dome that lost half due to erosion. But from other angles, it is more like a thin ridge. Most of the dome is still there!
Amazing But True!
- The Sierra Nevada Mountain Range is composed mostly of granite.
- Sedimentary and volcanic rocks were metamorphosed as the granite plutons intruded.
- Metamorphic rocks are found in the western portion of Yosemite National Park.
- During the Pleistocene, the entire region was coated by glaciers.
Show What You Know
With the link below, learn more about Yosemite granite. Then answer the following questions.
- Yosemite Nature Notes – 20 – Granite: http://www.youtube.com/watch?v=Y5RQp77uVPA
- Why do the granites of Yosemite have such large crystals? What type of mineral forms the large knobs that climbers use for hand and foot holds?
- Why is granite such a strong rock?
- What happened when glaciers tried to erode the granite? What caused Yosemite Valley to form?
- When you see a dark colored granitic rock surrounded by a lighter colored granitic rock, how do you think it formed?
- What made some of the granite surfaces so smooth and shiny?