The Chacalapan Geophysical Survey, Veracruz, México
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Research Year:  2000
Culture:  Aztec
Chronology:  Post Classic
Location:  Chacalapan, Veracruz, México
Sites:  Cinco Cerros and El Tecolote

Table of Contents

Abstract
Introduction
Methodology
Magnetic gradiometry
Electrical resistivity
Interpretations
Basalt Test
Cinco Cerros
El Tecolote
AREA I
AREA II
Conclusions and Suggestions for Further Research
Acknowledgements
List of Figures and Maps
Sources Cited

Abstract

The Chacalapan Geophysical Survey (CGS) took place surrounding the modern town of Chacalapan, Veracruz, México during March and May 2000. The main goals of the CGS were to aid ongoing work (Chacalapan Archaeological Project) aimed at examining the degree of Aztec control over the region and establishing a Postclassic ceramic chronology. The CGS helped accomplish these goals by locating domestic deposits and burned areas through magnetic gradiometry and electrical resistivity. Resistivity was employed also to take "soundings" at varying depths in excavation walls and over flat ground. This allowed the researchers to infer the type (sand, silt, clay) of the substrate. The survey produced a body of maps showing large, contiguous areas of the subsurface. The magnetic survey, while successfully locating several important deposits, was partially hindered by modern agricultural land use that contributed metal debris to the area. The data from six test excavations enabled us to refine our interpretive methodology and eliminate signals caused by intrusive metal. The production of accurate magnetic maps was a goal in itself. Those maps will enable the Chacalapan Archaeological Project to better target areas for excavation in the future and thus save time and money.

Submitted 03/01/2001 by:
Daniel Welch
dwelch@bu.edu

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