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Ed Jolie & team identify South America's oldest textiles
May '11
Textiles and rope fragments found in a Peruvian cave have been dated to around 12,000 years ago, making them the oldest textiles ever found in South America, according to a report authored by Ed Jolie, assistant professor of anthropology and director of the R. L. Andrews Center for Perishables Analysis at Mercyhurst College. Dr. James Adovasio, director of the Mercyhurst Archaeological Institute, is a contributing author on the report.

The items were found 30 years ago in Guitarrero Cave, high in the Andes Mountains. Other artifacts found along with the textiles had been dated to 12,000 ago and even older. However, the textiles themselves had never been dated, and whether they too were that old had been controversial, according to Jolie, who led this latest research.

The cave had been disturbed frequently with human and geological activity, so it was possible that the textiles could have belonged to much more recent inhabitants. What's more, the prior radiocarbon dates for the site had been taken from bone, obsidian, and charcoal — items that are known to sometimes produce inaccurate radiocarbon ages. According to Jolie, charcoal especially can produce dates that tend to overestimate a site's age.

“By dating the textiles themselves, we were able to confirm their antiquity and refine the timing of the early occupation of the Andes highlands,” Jolie said. His team used the latest radiocarbon dating technique — accelerated mass spectrometry — to place the textiles at between 12,100 and 11,080 years old.

The textile items include fragments of woven fabrics possibly used for bags, wall or floor coverings, or bedding. They were likely left by settlers from lower altitude areas during “periodic forays” into the mountains, according to Jolie.

“Guitarrero Cave's location at a lower elevation in a more temperate environment as compared with the high Andean [plain] made it an ideal site for humans to camp and provision themselves for excursions to even higher altitudes,” Jolie and his colleagues write.

These early mountain forays set the stage for the permanent settlements that came later — after 11,000 years ago — when the climate had warmed, glaciers receded, and settlers had a chance to adapt to living at higher altitudes.

Jolie's research also suggests that women were among these earliest high altitude explorers. Bundles of processed plant material found in the cave indicate that textile weaving occurred on site.

“Given what we know about textile and basket production in other cultures, there's a good possibility that it would have been women doing this work,” Jolie said.

“There's an assumption that these early forays into the mountains must have been made exclusively by men,” he added. “It appears that might not be the case, though more work needs to be done to prove it.”

Mercyhurst College

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