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Science 1 September 1978:
Vol. 201. no. 4358, pp. 807 - 809
DOI: 10.1126/science.201.4358.807
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Articles

The Paredón, Mexico, Obsidian Source and Early Formative Exchange

THOMAS H. CHARLTON 1, DAVID C. GROVE 2, and PHILIP K. HOPKE 3

1 Department of Anthropology, University of Iowa, Iowa City 52242
2 Department of Anthropology, University of Illinois, Urbana 61801
3 Institute for Environmental Studies, University of Illinois

In 1975, archeological surface surveys of trade routes located again a pre-Hispanic obsidian source in central Mexico first reported in 1902. Initial trace element studies of the Paredón source through an analysis by neutron activation have been compared with similar studies of the obsidian found at Chalcatzingo 150 kilometers from the source. These comparisons indicate that obsidian from Paredón, rather than Otumba, was of primary importance during the Early Formative in central Mexico.

Submitted on February 3, 1978

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Science. ISSN 0036-8075 (print), 1095-9203 (online)