North American Database of Archaeological Geophysics
North American Database of Archaeological Geophysics
Graphic/Image:
Project Name: Valley Forge National Historic Park, PA;
Reference: Parrington, M. (1979). Geophysical and Aerial Prospecting Techniques at Valley Forge National Historical Park, Pennsylvania. Journal of Field Archaeology 6(2):193-201. Reproduced from Journal of Field Archaeology with the permission of the Trustees of Boston University. All rights reserved.
Radar profile in M17 showing difference in signal received from the backfilled half and the undisturbed half of an offal pit. The dark area in the center of the image is the signal from the less dense backfilled half of the pit; the signal from the unexcavated portion (on the left) is less well pronounced. The vertical lines of dashes are marker lines spaced at approximately 1-meter intervals that are used to indicate position along the traverse.