Iconic landmarks such as Yosemite Valley, Hetch Hetchy, Yosemite peaks in the park, and the striking sheeted domes that can form only in. Bedrock Geology of the Yosemite Valley Area, Yosemite National Park, California (coming soon). YOSEMITE COUNTRY spacer image. Text and picture description on how Yosemite Valley was formed by from “ Evolution of the Valley,” Yosemite: Official National Park Handbook.

Learn how geology formed Yosemite National Park. From ancient volcanoes to Ice Age glaciers, discover the fascinating story behind the scenery. Yosemite Valley is one of the most awe inspiring vistas on the planet. But how did this natural wonder come to exist?. Yosemite National Park Geology. Yosemite is a glaciated landscape, and the scenery that resulted from the interaction of the glaciers and the underlying rocks .

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. Yosemite National Park is an American national park located in the western Sierra Nevada of . Muir and Johnson lobbied Congress for the Act that created Yosemite National Park on October 1, The State of California, however. Eventually on October 1, President Benjamin Harrison signed the legislation to create Yosemite National Park, making it the third national.