North American Database of Archaeological Geophysics
North American Database of Archaeological Geophysics
Graphic/Image:
Project Name: Effigy Mounds, IA (1);
Reference: Bevan, B. (1999). Some Geophysical Experiments at Effigy Mounds. Geosight, Weems, Virginia. Submitted to the Midwest Archeological Center, U.S. National Park Service, Lincoln, Nebraska.
A radar profile across the planar feature of Little Bear Mound (Mound 52). It is seen in the span from E8 to E10.3 on the profile and at a depth of 0.5 m. The depth scale assumes a pulse velocity of 0.086 m/ns. The radar antenna had a predominant frequency of 315 mHz. The perimeter path causes a small echo at E3, and a former tree is probably the cause of the complex pattern near E14.