Geophysical Investigations
at the New Philadelphia Site
Pike County, Illinois
2004

 

Dr. Michael L. Hargrave
U.S Army Engineer Research and Development Center
Construction Engineering Research Laboratory
Champaign, IL 61826-9005



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Contents

Sept. 2004 revised edition

  •   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

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