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| | [No title] |
 | | Byers, V.P., 1980, Geologic map and sections of the Sonsela Butte 4 SE quadrangle, Apache County, Arizona, and San Juan and McKinley Counties, New Mexico: U.S. Geological Survey Open-File Report 80-788, scale 1:24,000. |
 | | Huffman, A.C., Jr., and Jones, T.W., 1978, Preliminary geologic map of the Redrock Valley SE quadrangle, Apache County, Arizona and San Juan County, New Mexico: U.S. Geological Survey Open-File Report 78-404, scale 1:24,000. |
 | | Thaden, R.E., 1989, Geologic map of the Fort Defiance quadrangle, Apache County, Arizona, and McKinley County, New Mexico: U.S. Geological Survey Geologic Quadrangle Map GQ-1648, scale 1:24,000. |
| pubs.usgs.gov /of/1997/ofr-97-0052/nmscr4.txt (1853 words) |
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