North American Database of Archaeological Geophysics

Image Library (by archaeological site type): Historic/Non-Native Burned Structure

(to view an enlargement of a graphic, click on it)

Project images sorted alphabetically by state or country; within each by site name and geophysical survey type

Conductivity GPR Induced Polarization Magnetic Magnetic susceptibility Metal detector Multiple Methods Seismic Refraction Self Potential Resistance/Resistivity

ARKANSAS

Mount Comfort Church

The basic shape of the structure can be seen in the magnetic data, probably due to the higher magnetic susceptibility of remnant bricks;		Electrical resistivity survey area revealing the foundation of the historic church in the upper right area as well as a number of roads, tracks, and other features;		A detailed examination of the church area shows its outline and interior support piers, all probably of more resistant brick;
Thirty GPR profiles, each 0.5 m apart, were subjected to time slicing to produce plan graphics;		Close inspection reveals clear evidence of the church foundation in the 8-16 nS time slice, with evidence of perhaps a walkway seen in the 0-8 nS time slice;

MICHIGAN

Pointe Aux Barques Lighthouse

Magnetic Susceptibility image in the area of a lighthouse foundation

Resistance image of lighthouse foundation.

Resistance image with magnetic susceptibility overlay.

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