North American Database of Archaeological Geophysics
North American Database of Archaeological Geophysics
Graphic/Image:
Project Name: Steamboat North Alabama, SD;
Reference: DeVore, S.L. (1998). Electromagnetic Conductivity Investigations Searching for the Buried Steamboat "North Alabama" in Clay County, South Dakota. National Park Service, Intermountain Support Office, Denver, Colorado. Submitted to the Archaeology Laboratory, University of South Dakota, Vermillion, South Dakota.
Electromagnetic conductivity survey results. The abandoned Missouri River meander is reflected in the data set as a high conductivity area between N60/E0, N60/E145, N80/E145, and N80/E0. A smaller potential channel extends from N20/E0 to N60/E80. An area low conductivity is located between N-60//E60, N0/E80, N0/E160, and N-60/E180.