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.
Magnetic susceptibility survey results. There is a rectangular area of relative high susceptibility between N15/E0, N70/E0, N70/E100, and N-5/E100. A low susceptibility area is located between N15/E100, N40/E100, N40/E145, and N15/E145. Other relatively high areas are located at the north center, a linear anomaly in the southern part, and in the southwestern corner of the grid.