Geologic Trip, Tuolumne Meadows

Olmstead Point

 

Olmstead Point is in Tenaya Valley on Highway 120 about one mile south of Tenaya Lake. During the glacial episodes the Tenaya Valley was filled with the Tenaya glacier which was moving from the Tuolumne icefield toward Yosemite Valley. As the glacier slid down the valley, it scooped out the depression now filled by Tenaya Lake and also smoothed and polished the hard granodiorite at Olmstead Point.

 

When the glacier melted, it left numerous glacial erratics lying on the surface of the polished granite. You can see good examples of glacial polish and erratics by taking the 1/4-mile nature trail from the parking area to Olmstead Point.

Related Links

Geologic background: Tuolumne Meadows (pdf)

Geologic trips: Olmstead Point Pothole Dome Tioga Pass

 

Exterior Websites

National Park Service: Yosemite NP, Tuolumne Meadows Map and Area Information

Yosemite Hikes: Olmstead Point