Varieties of ripple marks and shrinkage cracks in the Wescogame Formation, Apache Trail in Havasu Canyon. Grand Canyon National Park, Coconino County, Arizona. No date.
Summary
Album caption and index card: Varieties of ripple marks and shrinkage cracks in Wescogame Formation, Grand Canyon. B, Linguoid or crescent-shaped ripple marks, Apache Trail in Havasu Canyon. Pen for scale. Grand Canyon National Park. Coconino County, Arizona. n.d. Published as Figure N3-B in U.S. Geological Survey. Professional Paper 1173. 1982.
Summary
Album caption and index card: Varieties of ripple marks and shrinkage cracks in Wescogame Formation, Grand Canyon. B, Linguoid or crescent-shaped ripple marks, Apache Trail in Havasu Canyon. Pen for scale. Grand Canyon National Park. Coconino County, Arizona. n.d.
Published as Figure N3-B in U.S. Geological Survey. Professional Paper 1173. 1982.
Available in the U.S. Geological Survey, Denver Library Photographic Collection, McKee, E.D. Collection.
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