North American Database of Archaeological Geophysics

Database Report:

Site Name: Cahokia Mounds State Historic Site; Site Number: _____; County: St. Clair; State: IL; Country: US; Ownership: Illinois Historic Preservation Agency; Landform: terrace;

Date of Site: AD 700-1400; Period Type: Mississippian; Culture: Mississippian; Site Type: mound center; Site Size: 1600 hectares;

Survey Type: Magnetic Gradiometry;

Instrument: Geometrics G-858 cesium gradiometer; Sampling Interval: .2 m x 1 m; Prospecting Depth: 1.5 to 2 m; Area Surveyed: 1600 sq m; Date of Survey: May 14-18, 2003; Land Cover Type: grassy parkland; Ground Truthing: none to date;

Graphics/Imagery:

Geometrics G-858 cesium gradiometer contour and image data plots

 
   

Survey Type: Magnetic Gradiometry;

Instrument: Geoscan Research FM36 fluxgate gradiometer; Sampling Interval: .125 m x 1 m; Prospecting Depth: 1.5 m to 2 m; Area Surveyed: 1600 sq m; Date of Survey: May 14-18, 2003; Land Cover Type: grassy parkland; Ground Truthing: none to date;

Graphics/Imagery:

Geoscan Research FM36 fluxgate gradiometer contour and image data plots;

 
   

Survey Type: Electrical Resistivity/Resistance;

Instrument: Geoscan Research RM15 resistance meter with PA5 multiprobe array and MPX15 multiplexer; Sampling Interval: .5 m x 1 m; Prospecting Depth: .5, 1.0, 1.5 m; Area Surveyed: 1600 sp m; Date of Survey: May 14-18, 2003; Land Cover Type: grassy parkland; Ground Truthing: none to date;

Graphics/Imagery:

Geoscan Research RM15 resistance meter and MPX15 multiplexer contour and image resistivity data plots at .5 m, 1.0 m, and 1.5 m probe separation;

  

 

  

 

Survey Type: Electrical Resistivity/Resistance;

Instrument: Gossen Geohm 40D eart tester with the offset Wenner probe array; Sampling Interval: two offset vertical electrical sounding profiles from 0.1 m to 5.0 m; Prospecting Depth: 0.1 m to 5.0 m; Area Surveyed: 2 linear lines with one centered at 240S/140W near Mound 48 and the other near the area next to the Northeast Palisade line; Date of Survey: May 14-23, 2003; Land Cover Type: grassy parkland; Ground Truthing: N/A;

Graphics/Imagery:

Geohm 40D resistivity data and model for vertical electrical sounding in Northeast Palisade Project Area;

  

 

  

 

Survey Type: Electrical Conductivity;

Instrument: Geonics EM38 ground conductivity meter; Sampling Interval: .25 m x 1 m; Prospecting Depth: 1.5 m; Area Surveyed: 160 sq m; Date of Survey: May 14-18, 2003; Land Cover Type: grassy parkland; Ground Truthing: none to date;

Graphics/Imagery:

Geonics EM38 conductivity meter contour and image data plots;

  

 

  

Project Name: Geophysical Investigations South of Mound 48;

Reference: DeVore, Steven L., Aaron Fogel and Kelsey Lowe (2003) Geophysical Investigations of the Area South of Mound 48, Cahokia Mounds State Historic Site, St. Clair County, Illinois. National Park Service, Midwest Archaeological Center Lincoln, Nebraska.

Survey by: Steven L. Devore, National Park Service, Federal Building, Room 474, 100 Centennial Mall North, Lincoln, Nebraska 68508; Phone: 402-437-5392x141; Fax: 402-437-5098; email: steve_de_vore@nps.gov and Robert K. Nickel, private consultant, Lincoln, Nebraska, Aaron Fogel, Department of Anthropology and Earth Science, Minnesota State University, Moorhead, Minnesota, and Kelsey Lowe, Department of Anthropology and Earth Science, Minnesota State Univeristity, Moorhead, Minnesota.

Survey for: Site Manager, Cahokia Mounds State Historic Site, Collinsville, Illinois;

Report Location: Midwest Archaeological Center, National Park Service, Federal Building , Room 474, 100 Centennial Mall North, Lincoln, Nebraska 68508-3873; Report Type: CRM report;

Abstract/Summary