INTEGRATION OF GIS AND GEOLOGIC BEDROCK MAPPING AT THE 1:24,000 SCALE AT THE MISSOURI GEOLOGICAL SURVEY

Bedrock mapping at the Missouri Geological Survey (MGS) is done primarily through the STATEMAP component of the National Cooperative Geologic Mapping program; and is unique in that the geologist plays dual roles as both geologist and cartographer. The bedrock mapping of the Millersburg Northeast quadrangle, completed over the 2013-2014 field season, represented the integration of GIS techniques and technology and geologic field work. The collection, organization, and compilation of the data resulted in a fully integrated process and deliverable end product. Field work was assisted by compiling historical geologic mapping, locating and displaying well and measured section data, delineating property boundaries, and aerial photographs, into a digital, spatially referenced, editable file. In the field Garmin etrex 20 and Trimble JuneT41/5 handheld devices were used to collect waypoint data and display geographic information. MGS geologists use ArcMAP 10.1^TM (ESRI) software to generate digital shapefiles and create the final map layout. The maps are available in digital as well as hard copy format. Data was also prepared for the eventual inclusion in the state Missouri Geosciences Technical Resource Assessment Tool (GeoSTRAT) an interactive web browser. GeoSTRAT is a Web application that makes geologic and hydrologic data readily available for public use. GeoSTRAT enables users to easily visualize and explore geospatial data using an interactive map. Data also can be downloaded in formats compatible with a variety of free and commercial mapping software.