Geophysical Investigations
at the New Philadelphia Site
Pike County, Illinois
2004
Contents
Geophysical Survey Report
Figure 1
: Electrical Resistance Survey, Block 9
Figure 2
: Magnetic Gradient Survey, Block 9
Figure 3
: Excavation Units 1-3, Block 9, Lot 5, overlain on Electrical Resistance Survey
Figure 4
: Feature 1, Excavation Units 1-3, Block 9, Lot 5
Figure 5
: Electrical Resistance Survey, Blocks 3 and 8
Figure 6
: Electrical Resistance Survey, Blocks 3 and 8, with Anomalies Highlighted
Figure 7
: Magnetic Gradient Survey, Blocks 3, 4, 7 and 8
Figure 8
: Magnetic Gradient Survey, Blocks 3, 4, 7 and 8, with Anomalies Highlighted
Figure 9
: Excavation Unit 1, Block 7, Lot 1, overlain on Magnetic Gradient Survey
Figure 10
: Feature 3, Excavation Unit 1, Block 7, Lot 1
Figure 11
: Excavation Units 1-3, Block 8, Lot 4, overlain on Magnetic Gradient Survey
Figure 12
: Feature 4, Excavation Units 1-3, Block 8, Lot 4
Figure 13
: Electrical Resistance Survey, Block 13, without High Pass Filter
Figure 14
: Electrical Resistance Survey, Block 13, with High Pass Filter
Figure 15
: Electrical Resistance Survey, Block 13, with High Pass Filter and Anomalies Highlighted
Figure 16
: Map of Excavation Units, Block 3, Lots 3-4
Figure 17
: Feature 2, Excavation Units 3-6, Block 3, Lot 4