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22 Αυγ 2023 · The landscape of Yosemite National Park is a product of its unique geology, resulting from glacial erosion of the underlying granite. Iconic landforms such as Yosemite Valley, Yosemite Falls, Bridalveil Fall, El Capitan, Half Dome, and Cathedral Peak are known throughout the world.
- NPS Geodiversity Atlas—Yosemite National Park, California
The scenic landscape of Yosemite Valley is decorated with...
- Granite - Yosemite National Park (U.S. National Park Service)
Granite dominates the geology of Yosemite National Park. The...
- NPS Geodiversity Atlas—Yosemite National Park, California
Since 2.6 million years ago there have been more than 40 cycles of glacial (cold) and interglacial (warm) periods. These glacial periods modified the landscape forming Yosemite Valley, other canyons, lakes, and many of the other features seen in Yosemite today.
The exposed geology of the Yosemite area includes primarily granitic rocks with some older metamorphic rock. The first rocks were laid down in Precambrian times, when the area around Yosemite National Park was on the edge of a very young North American continent.
Yosemite Valley is on the western slope of the Sierra Nevada mountains, 150 miles (240 km) east of San Francisco. It stretches for 7.5 miles (12.1 km) in a roughly east–west direction, with an average width of about 1 mile (1.6 km). Sentinel Rock at sunset.
The scenic landscape of Yosemite Valley is decorated with world-renowned geologic features that include Half Dome, El Capitan, Sentinel Rock, and the cliffs of Yosemite Valley. The lofty mountain peaks of Mount Lyell, Mount Dana, and Kuna Peak are the highest in YOSE with elevations that exceed 3,960 m (13,000 ft) above sea level.
Field studies in the Yosemite area have contributed to the development of our ideas about geologic processes, including the different actions of streams and glaciers in the evolution of the landscape, and the formation of granite, the basic bedrock of much of the Earth's continents.
19 Σεπ 2019 · Granite dominates the geology of Yosemite National Park. The park boundary perfectly frames a landscape that is composed almost entirely of granite, and it’s no surprise that this landscape contains some of the most iconic rock formations on earth.