O'Connor, H.G.,  2007, Geologic Map of Lyon County, Kansas; geologic formation boundaries adjusted by D.R. Collins to fit 1:24:000 topographic base of the U.S. Geological Survey: Kansas Geological Survey, Map M-105, 1 sheet, scale 1:50,000.
Paper copies of the complete map (with stratigraphic column and legend info) are available from the Kansas Geological Survey, 1930 Constant Ave., Lawrence, KS 66047 (or phone 785-864-3965) and at 4150 W. Monroe St., Wichita, KS 67209-2640 (phone 316-943-2343). The cost is $15.00 plus handling and sales tax.
O'Connor, H.G., 1953, Part 1, Rock formations of Lyon County, pp. 5-24, in Geology mineral resources, and ground-water resources of Lyon County, Kansas: Kansas Geological Survey, Volume 12, 59 pages (available online)
The Kansas Data Access and Support Center (DASC) has ArcInfo coverages available for this geologic data.
Cartographic Services, Kansas Geological Survey
Updated Oct. 24, 2007
Comments to firstname.lastname@example.org