North American Database of Archaeological Geophysics
North American Database of Archaeological Geophysics
Abstract/Summary:
Project Name: Arkansas Post National Monument, AR;
Reference: Weymouth, J.W. (1998). Two Geophysical Surveys in the Village Area, Arkansas Post National Memorial. University of Nebraska, Lincoln, Nebraska. Submitted to the Midwest Archeological Center, National Park Service, Lincoln, Nebraska.
On April 23, 1998, a geophysical survey of three 20 m by 20 m blocks was conducted in the Village area of the Arkansas Post National Memorial. The survey blocks were located near the sidewalk in the Village area south of the State Bank site and north of the Notrebe's Gin site. All three of the survey blocks were covered with a Geoscan FM36 fluxgate gradiometer. Two of the three blocks were covered with a Geoscan RM15 resistance meter. The gradiometer data were first processed using Geoscan Geoplot. The data were subjected to zero mean traverse, despiked, shrunk to 0.5 in in the north direction and expanded to 0.5 m in the east direction. The data were then moved to Surfer. The resistance data were moved to Surfer without any pre-processing.
The magnetic results showed two significant anomalies (one centered at N07,E23 and the other near N11,E55), a strong group of anomalies in the north central region of the survey area, a linear low region that could be the record of a road, and another linear group somewhat east of the "road". The two significant anomalies could be associated with houses, possibly filled cellars. There was a slight depression on the ground were the "road" anomaly passes through. The complex of anomalies in the north central part of the survey area is too complicated to decipher but it was noticed that there was a slight depression in the ground at this location. It can be seen that the "house" anomaly on the east end in the magnetic results is repeated in the resistance data. The location of the other "house" anomaly was not covered. Although the "road" anomaly is not as obvious there is a slight suggestion of it in the resistance data.