The prismatic form of Agassiz Column. Yosemite National Park, California. 1914.
Dates
Date Taken
1923
Summary
Album caption: Near view of Agassiz Column, a poised rock below Union Point, showing in its prismatic form the controlling effect of vertical and diagonal jointing. The cliffs aout the Yosemite Falls, in the background, reveal vertical, diagonal and horizontal master joints. Handwritten notes on album caption: Yosemite National Park, Mariposa County, California. 1923. Published as Plate 47-B in U.S. Geological Survey Professional paper 160. No index card. Plate 47-B caption: Agassiz Column. The prismatic form of Agassiz Column is determined wholly by intersecting planes, vertical and oblique. The column is the last remnant of a rock mass that was divided by many such fractures. The cliffs about the Yosemite Falls, in the background, [...]
Summary
Album caption: Near view of Agassiz Column, a poised rock below Union Point, showing in its prismatic form the controlling effect of vertical and diagonal jointing. The cliffs aout the Yosemite Falls, in the background, reveal vertical, diagonal and horizontal master joints.
Handwritten notes on album caption: Yosemite National Park, Mariposa County, California. 1923. Published as Plate 47-B in U.S. Geological Survey Professional paper 160.
No index card.
Plate 47-B caption: Agassiz Column. The prismatic form of Agassiz Column is determined wholly by intersecting planes, vertical and oblique. The column is the last remnant of a rock mass that was divided by many such fractures. The cliffs about the Yosemite Falls, in the background, are comparatively massive. The rows of bushes accentuate the few horizontal and oblique master joints which determine the principal sculptural features. Photo by A.C. Pillsbury.
Available in the U.S. Geological Survey Denver Library Photographic Collection, Matthes, F.E. Collection.
Rights
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