Map of locations of collapse-breccia pipes in the Grand Canyon region of Arizona
Sutphin, H.B., and Wenrich, K.J., 1989, Map of locations of collapse-breccia pipes in the Grand Canyon region of Arizona: U.S. Geological Survey Open-File Report 89-0550, 1 sheet, scale 1:250,000.
Authors
Sutphin, H.B., and Wenrich, K.J.
Publication Date
1989
Citation
U.S. Geological Survey Open-File Report 89-0550, 1 sheet, scale 1:250,000.
