North American Database of Archaeological Geophysics
North American Database of Archaeological Geophysics
Graphic/Image:
Project Name: Fort Wilkins State Park, MI;
Reference: Young, C.T. and D.R. Droege (1986). Archaeological Applications of Resistivity and Magnetic Methods at Fort Wilkins State Park, Michigan. Geophysics 51(3):568-575 (used with permission).
Guard house magnetic gradient data. The units are nonoteslas per meter, positive downward. The data are dominated by a regional gradient due to the iron roof of a nearby building.