Salt: Mover and shaker in ancient Maya society

October 8, 2018, Louisiana State University



Scientists analyzed the microscopic markings on excavated stone tools including this one to discover new findings about the ancient Maya from more than 1,000 years ago. Credit: LSU

Salt is essential for life. As ancient civilizations evolved from hunters and gatherers to agrarian societies, it has not been clear how people acquired this mineral that is a biological necessity. However, an anthropologist at LSU discovered remnants of an ancient salt works in Belize that provide clues on how the ancient Maya at the peak of their civilization more than 1,000 years ago produced, stored and traded this valuable mineral. New analyses of stone tools found at this site, called the Paynes Creek Salt Works, reveal that not only were the Maya making salt in large quantities, but they were salting fish and meat to meet dietary needs and producing a commodity that could be stored and traded.

"Since we found virtually no fish or other animal bones during our sea-floor survey or excavations, I was surprised that the microscopic markings on the stone tools, which we call 'use-wear,' showed that most of the tools were used to cut or scrape fish or meat," said Heather McKillop, the study's lead author and the Thomas & Lillian Landrum Alumni Professor in the LSU Department of Geography & Anthropology.

McKillop worked on this study with co-author Professor Kazuo Aoyama from Ibaraki University in Japan who is an expert on the use-wear damage on stone tools. McKillop's study site is a 3-square-mile area surrounded by mangrove forest that had been buried beneath a saltwater lagoon due to sea level rise.

"Sea level rise completely submerged these sites underwater," she said.

More:
https://phys.org/news/2018-10-salt-mover-shaker-ancient-maya.html