Varieties of ripple marks and shrinkage cracks in Wescogame Formation. Grand Canyon National Park, Mohave County, Arizona. No date.
Summary
Album caption and index card: Varieties of ripple marks and shrinkage cracks in Wescogame Formation, Grand Canyon. E, Shrinkage cracks and probable mold of plant stem, near top of cliff unit, Andrus Canyon. Pen for scale. Grand Canyon National Park. Mohave County, Arizona. No date. Published as Figure N3-E 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. E, Shrinkage cracks and probable mold of plant stem, near top of cliff unit, Andrus Canyon. Pen for scale. Grand Canyon National Park. Mohave County, Arizona. No date.
Published as Figure N3-E in U.S. Geological Survey. Professional Paper 1173. 1982.
Available in the U.S. Geological Survey, Denver Library Photographic Collection, McKee, E.D. Collection.
Rights
This USGS product is considered to be in the U.S. public domain. For further information on the USGS Information Policies and Instructions, refer to the Copyrights and Credits section on this web page: http://www.usgs.gov/laws/info_policies.html