CONFLATION AND INTEGRATION OF ARCHIVED GEOLOGIC MAPS

Old geologic maps contain a wealth of information about a region, but due to years of storage and loss of institutional knowledge they often have little or no associated metadata. This research looks at some of the problems and uncertainties associated with conflating these maps together (in regions where modern maps are, as yet, non-existent) as well as vertically integrating these maps with layers of modern GIS data (in this case, The National Map of the U.S. Geological Survey). Ste. Genevieve County, Missouri was chosen as the test area. It is covered by six archived geologic maps constructed in the years ranging from 1927 to 1981. This result is a map that is internally consistent with these six maps and is digitally integrated with hydrography, elevation and orthoimagery data.