North American Database of Archaeological Geophysics
North American Database of Archaeological Geophysics
Graphic/Image:
Project Name: Twelve Mile House (5AH121), CO;
Reference: De Vore, S.L. (1992). Geophysical Applications in Archaeology: A Case Study at the Twelve Mile House (5AH121), Arapahoe County, Colorado. Southwestern Lore 58(1):1-16 (used with permission).
Gradient field plot for magnetometer. Two dipole anomalies located along the 120N line at 210E and 240E represented induce magnetization. The anomaly located at 120N/210E was interpreted as the base of the eastern exterior chimney to the original log house. The second anomaly at 120N/240E may represent a second chimney foundation to another building; however, its identification is currently uncertain. The dipole anomaly located at 90N/270E, may exhibit remanent magnetization and is probably an accumulation of ferrous material. Two monopole anomalies were also present. One located at 90N/270E, may be a stone-cased well. The nature of the second monopole anomaly, located at 45N/240E, has not been identified.