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SOURCE PROVENANCE OF OBSIDIAN ARTIFACTS FROM PIEDRAS MARCADAS PUEBLO RUIN (LA 290), MIDDLE RIO GRANDE VALLEY, NEW MEXICO

Abstract

The analysis here of 195 obsidian artifacts from the surface and subsurface of Piedras Marcadas Pueblo ruin (LA 290) in the middle Rio Grande River valley indicates a source provenance similar to previous analyses of surface and subsurface contexts dominated by sources from the Jemez Mountains, both pre-and-post caldera. Most unique and important for the history of the site, and indeed the Coronado presence in the Middle Rio Grande valley is the occurrence of two polyhedral blade fragments produced from the Zinapecuaro obsidian source near the town of the same name in northeastern Michoacan state of west central Mexico

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