Rock falls from Glacier Point above Camp Curry, Yosemite National Park, California

Open-file Report 99-385

Figure 5A- Depiction of cracks and their propagation. Photomosaic of releases and area of cracking below Glacier Point. Cracks are shown by red dashed lines. Some selected joints and other structural features are identified by solid red lines for reference. Window notation refers to area of inset exfoliation sheet. Note water seeps over surface of exfoliation sheet J1 issuing from joint set J2 (left).
Gerald F. Wieczorek, U.S. Geological Survey and James B. Snyder, National Park Service logo