Geologic map of the Wilderness amd Handy quadrangles, Oregon, Carter, and Ripley Counties, Missouri

The geology of theWilderness and Handy quadrangles,  Oregon, Carter and Ripley Counties, Missouri were mapped from 1999 through 2000 as part of the KARST (Karst Applied Research Studies Through geologic mapping) Project, Eastern Earth Surface Processes Team. The map supports the production of a geological framework that will be used in hydrogeologic investigations in the area of the Mark Twain National Forest and Ozark National Scenic Riverways (National Park Service). Digital geologic coverages will be used by other federal and state agencies in hydrogeologic analyses of the Ozark karst system, potential effect of underground base-metal mining, and in ecological models.

The purpose of this geological map and database is to support and be part of a three-dimensional geologic framework study of south-central Missouri. The framework will be used to assess environmental impacts of lead and zinc mining in the Mark Twain National Forest on the hydrologic system of the Ozark National Scenic Riverways.

Position of field data points plotted within 1:24,000 scale USGS topographic map. Horizontal positional accuracy is estimated to be within 10 meters.

Horizontal positions were plotted on a georeferenced topographic base at 1:24,000 scale and vertical postiions read off of the map. Therefore, the mapped vertical accuracy is probably within National Map Accuracy Standards, with a horizontal accuracy of 11.9 feet at the 95% confidence level.