North American Database of Archaeological Geophysics
North American Database of Archaeological Geophysics
Graphic/Image:
Project Name: Fort de Chartres, IL;
Reference: Bevan, B.W. (1983). Electromagnetics for Mapping Buried Earth Features. Journal of Field Archaeology 10(1):47-54. Reproduced from Journal of Field Archaeology with the permission of the Trustees of Boston University. All rights reserved.
A conductivity map of an area on the NW side of Fort de Chartres. The readings are in millisiemens per meter. The high conductivity band (shaded area to the right), probably locates a refilled fortification trench. The shaded area to the left represents a high conductivity anomaly of unknown cause.