High-Resolution Reflection Seismic Surveys Of Abandoned Lead And Zinc Mines Along A Proposed Interstate Route, Near Joplin, Missouri

In October and November of 1996, the department of Geology and Geophysics at the University<br>of Missouri-Rolla conducted a reflection seismic survey for the Missouri Department of<br>Transportation (MoDOT) along a proposed interstate route near Joplin, Missouri. In total, six,<br>24-fold reflection seismic profiles (6,000 m) were acquired across previously mined (lead/zinc)<br>ground. Checkshot data was acquired to correlate the reflection seismic data with the subsurface<br>geology. The principle objective was to provide MoDOT with interpreted seismic profiles (re:<br>abandoned open-pit mine workings) with a view in assisting MoDOT engineers with route<br>planning and site remediation.<br>The reflection seismic survey was successml. The survey established that the high-resolution<br>refection seismic method can be used to image Mississippian bedrock, paleosinkholes, and<br>abandoned mine access and ventilation shafts. Paleosinkholes, trending north-northeast, were<br>prospective sites for shallow mining activities.<br>The reflection seismic data effectively delineated old mine workings in the study area. The<br>interpretations of the seismic profiles (confirmed by borehole and checkshot survey data) were<br>transferred onto existing mine location maps as an aid to MoDOT engineers involved in hazard<br>assessment, route planning, and site remediation.