North American Database of Archaeological Geophysics

Image Library (by archaeological site type): Prehistoric/Native Fortified Settlement

(to view an enlargement of a graphic, click on it)

Project images sorted alphabetically by state or country; within each by site name and geophysical survey type

Conductivity GPR Induced Polarization Magnetic Magnetic susceptibility Metal detector Multiple Methods Seismic Refraction Self Potential Resistance/Resistivity

AL
AR
AK
AZ
CA
CO
CT
DE
FL
GA
HI
IA
ID
IL
IN
KS
KY
LA
MA
MD
ME
MI
MN
MO
MT
MS
NC
ND
NE
NH
NJ
NM
NV
NY
OH
OK
OR
PA
RI
SC
SD
TN
TX
UT
VA
VT
WA
WI
WV
WY

 

 

ILLINOIS

Cahokia Mounds State Historic Site (1)

The average resistivity at each sounding;   An analysis of the resistivity soundings;   A plot of the resistivity pseudosection;
Conductivity measurements on lines 1 and 2;   Conductivity measurements on lines 3 and 4;   Azimuthal seismic refraction measurements at location 1;

Cahokia Mounds State Historic Site (2)

EM31 transects across a well-defined mound;   EM conductivity map of the Grand Plaza prepared using Surfer (version 3.0);    

Cahokia Mounds State Historic Site (3)

Surfer contour map of magnetic data.   Surfer contour map of resistivity data.   GEOPLOT shade relief plot of resistance data.

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KANSAS

Bogan Site (14GE1)

Magnetic gradient data from the Bogan Site clearly showing three houses;   House 2 resistance data from the Bogan Site;   GPR time slice of Grid 9 from 8.5 to 17.1 nS;
GPR time slice of Grid 8 from 8.5 to 17.1 nS;  

GPR time slice of Grid 7 from 8.5 to 17.1 nS;

   GPR time slice of Grid 3 from 0.0 to 8.5 nS;

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NORTH DAKOTA

Double Ditch Indian Village State Park (32BL8)

Magnetic image from Double Ditch, ND, showing areas surveyed in 2000 and 2001, numerous houses, borrow pits, at least four fortification systems, and other features.

 

   Magnetic image from Double Ditch, ND, showing detail of three of the fortification ditches and bastions.   Magnetic image from Double Ditch, ND, showing evidence of closely spaced rectangular houses.
Magnetic image from Double Ditch, ND, showing a large borrow pit area.   Magnetic image from Double Ditch, ND, showing evidence of closely spaced circular houses.
  Resistivity image from Double Ditch, ND, showing areas surveyed in 2000 and 2001, numerous houses, borrow pits, at least four fortification systems, and other.
Resistivity image from Double Ditch, ND, showing detail of three of the fortification ditches and bastions.   Resistivity image from Double Ditch, ND, showing evidence of a rectangular house by a high resistance zone of eroded roof sediments.   Comparison between 1906 excavation plan made by Will and Spinden with resistivity results at Double Ditch, ND.

Electromagnetic conductivity image showing features and interpretations
at Double Ditch, ND.

 

        

Flaming Arrow (32ML4)

Magnetic image, village features and interpretations, Flaming Arrow Village, ND;   Resistance image, village features and interpretations, Flaming Arrow Village, ND.    

Huff Village State Historic Site (32MO11)

Aerial photograph of Huff Village with the 20 x 20 m magnetic survey grids superimposed;   Magnetic survey results at Huff Village with interpreted features and surface house depressions indicated;   A comparison of houses excavated by W.R. Wood in the 1960s at Huff Village with the magnetic data;
Electrical resistance survey results from Huff Village at approximately 1.5 m prospecting depth, with blues indicating high resistance and reds low;   Resistivity tomography images in the vicinity of a house depression at Huff Village;    

Conductivity GPR Induced Polarization Magnetic Magnetic susceptibility Metal detector Multiple Methods Seismic Refraction Self Potential Resistance/Resistivity

Menoken Village State Historic Site (32BL2)

Magnetic gradiometry survey results at Menoken Village, ND;   Magnetic detail of burned houses at Menoken Village, ND;   Comparison of digital elevation and magnetic data at a burned house at Menoken Village, ND;
Detail of the magnetic gradiometry survey at Menoken Village, ND, showing a portion of the fortification ditch;   Correspondence of magnetic findings with excavation profile;   Details of the electrical resistivity survey at Menoken Village, ND, showing trail features;
Results of the electrical resistivity survey at Menoken Village, ND;   Correspondence of magnetic and resistance data with burned earth weight as revealed by excavations at House 17;    

On-A-Slant Village (32MO26) (1)

Geophysical survey results in the earthlodge survey area;   Geophysical survey results in the earthlodge survey area;   GPR transects in the western site perimeter survey, east of the road;
GPR transects in the western site perimeter survey, west of the road;        

On-A-Slant Village (32MO26) (2)

Results of the magnetic survey of an earthlodge;   Results of the resistivity survey of an earthlodge;   Results of the GPR survey of an earthlodge;
GPR profile adjacent to on-going fortification ditch excavations by the University of North Dakota;        

Ward Village (32BL3)

Magnetic gray-scale image (colorized) and 3D surface plot, 3 surface house depressions, Ward Village, ND;   Resistance gray-scale image (colorized) and 3D surface plot, 3 surface house depressions, Ward Village, ND;    

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SOUTH DAKOTA

Whistling Elk Village (39HU242)

The results of the magnetic gradiometry survey at Whistling Elk, SD;   Magnetic data showing the central hearth, at least 3 central support posts, and extensive burning along the walls of an unusually large house at Whistling Elk Village, SD;   The results of the electrical resistivity survey at Whistling Elk, SD;
Multiple depth resistivity data were acquired at Whistling Elk Village, SD, in an area bisecting the western fortification ditch immediately below the bastion loop;   Resistivity data showing the walls and entryway of an unusually large house (10 m wide), probably used for ceremonial purposes at Whistling Elk Village, SD;   The results of the electromagnetic conductivity survey at Whistling Elk Village, SD;
Ten 15 m ground penetrating radar transects were run over a 5 m length of the fortification ditch at Whistling Elk Village, SD, each separated by 50 cm;   Data fusion of three geophysical surveys at Whistling Elk Village, SD, achieved through RGB color compositing;   Cultural interpretations at Whistling Elk Village, SD, achieved through comparison of resistivity, conductivity, and magnetic data sets;

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Conductivity GPR Induced Polarization Magnetic Magnetic susceptibility Metal detector Multiple Methods Seismic Refraction Self Potential Resistance/Resistivity

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