Page 398 - Laboratory Manual in Physical Geology

Wah Wah Valley Hardpan

Delta

Z
Z

X

Y

San Francisco Mountains

North

FIGURE 14.8 Stereogram of the Wah Wah Valley, Utah, area: 1:58,000 scale. The stereogram is constructed with two 1991, National
high-altitude photograph (NHAP) aerial photographs (Courtesy of U.S. Geological Survey). View this stereogram using a pocket stereoscope
( FIGURE 9.9 , page 241 ) or by crossing your eyes. Hold the stereogram at a comfortable distance (one foot or so) from your eyes with your

nose facing the line between the images. Cross your eyes until you see four photographs (two stereograms), then relax your eyes to let the two
center photographs merge into one stereo image.
366 ■ L ABOR ATORY 14