http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Surface to subsurface cross sections showing correlation of the Dakota Sandstone, Burro Canyon (?) Formation, and upper part of the Morrison Formation in the Chama-El Vado area, Chama Basin, Rio Arriba County, New Mexico
3 sections on 2 sheets ; sheets 92 x 137 cm. and 92 x 147 cm., folded in envelope 30 x 24 cm.
Department of the Interior, U.S. Geological Survey ; by Jennie L. Ridgley.
Includes text, bibliography, and index map.
Miscellaneous field studies ; map MF-1496-D