North American Database of Archaeological Geophysics

Database Report:

Site Name: San Lorenzo; Site Number: _____; County: _____; State: Veracruz; Country: Mexico; Ownership: Instituto Nacional de Antropología e Historia; Landform: Plateau;

Date of Site: 1200-400 BC; Period Type: Prehistoric; Culture: Olmec; Site Type: Ceremonial Complex; Site Size: ~975 sq km;

Survey Type: Magnetometry-Total Field;

Instrument: Geometrics Portable Cesium Magnetometer; Sampling Interval: 2 x 2 m; Prospecting Depth: up to 5 m; Area Surveyed: 31 ha; Date of Survey: 1966; Land Cover Type: High grass and dense coastal forest; Ground Truthing: Yes;

Graphics/Imagery:

Total magnetic intensity contour map over a buried Olmec Altar (Monument 51);	Contour map of the magnetic intensity over a colossal Olmec head (Monument 61) that was buried at a depth of approximately 5 meters;
Contour map of total magnetic intensity of a grid containing a colossal Olmec head (Monument 53);	Total magnetic intensity contour map and perspective view of contoured data over an area described as a "workshop";

Project Name: San Lorenzo, Veracruz, Mexico;

Reference: Breiner, S. and M.D. Coe. (1972). Magnetic Exploration of the Olmec Civilization. American Scientist. 60:566-575 (used with permission).

Survey by: Sheldon Breiner, Department of Geophysics, Stanford University.

Survey for: Instituto Nacional de Antropología e Historia, Yale University, supported by the National Science Foundation;

Report Location: NA; Report Type: Journal Article;

Abstract/Summary