Odessa Yates Site
1998 Field Season Results
Testing of geophysical anomalies, or "ground truthing", was conducted on a sample of the geophysical anomalies at the Odessa-Yates Site using a combination of non-invasive and invasive techniques. The objective was to identify the source of the geophysical anomaly in the least invasive and least time consuming manner.
Ground truthing began with the creation of a 1:100 scale map with grid lines at one meter intervals in the North-South and East-West directions. This map was used to locate the precise position of each anomaly within our grid system.
Among the Anomalies selected for testing were the anomalies labeled as A and B on the resistance map (the map shows only a portion of the survey). Both were presumed to be architectural features. Anomaly A has associated magnetic anomalies and B does not.
Once the position of the anomaly was located on the ground, testing was conducted using the following three methods:
Because of the high conductivity of the soil and limited dielectric contrast, the ground penetrating radar yielded inconclusive results.
Coring of anomaly A revealed level floor with a dark organic cultural deposit containing much charcoal and bone.
Coring of anomaly B was inconclusive, but excavation showed it to be a structure made of very friable mud brick, but without associated cultural material.
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February 9, 2012