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Archaeologists Uncover New Clues to Maya Collapse

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Using the largest set of radiocarbon dates ever obtained from a single Maya site, archaeologists have developed a high-precision chronology that sheds new light on patterns leading up to the two major collapses of the ancient civilization.

Archaeologists have long puzzled over what caused what is known as the Classic Maya collapse in the ninth century A.D., when many of the ancient civilization’s cities were abandoned. More recent investigations have revealed that the Maya also experienced an earlier collapse in the second century A.D. — now called the Preclassic collapse — that is even more poorly understood.

University of Arizona archaeologist Takeshi Inomata and his colleagues suggest in a new paper, to be published in the Proceedings of the National Academy of Sciences, that both collapses followed similar trajectories, with multiple waves of social instability, warfare and political crises leading to the rapid fall of many city centers.

Archaeologists excavate the royal palace of Ceibal, which was burned during the Classic Maya collapse in the ninth century.

Credit: Takeshi Inomata/University of Arizona

The findings are based on a highly refined chronology developed by Inomata and his colleagues using an unprecedented 154 radiocarbon dates from the archaeological site of Ceibal in Guatemala, where the team has worked for over a decade.

While more general chronologies might suggest that the Maya collapses occurred gradually, this new, more precise chronology indicates more complex patterns of political crises and recoveries leading up to each collapse.

“What we found out is that those two cases of collapse (Classic and Preclassic) follow similar patterns,” said Inomata, the paper’s lead author and a professor in the School of Anthropology in the UA College of Social and Behavioral Sciences. “It’s not just a simple collapse, but there are waves of collapse. First, there are smaller waves, tied to warfare and some political instability, then comes the major collapse, in which many centers got abandoned. Then there was some recovery in some places, then another collapse.”

Using radiocarbon dating and data from ceramics and highly controlled archaeological excavations, the researchers were able to establish the refined chronology of when population sizes and building construction increased and decreased at Ceibal.

University of Arizona anthropology professor Daniela Triadan excavates the collapsed facade of the royal palace of Ceibal, which which was burned during the Classic Maya collapse in the ninth century..

Credit: Takeshi Inomata/University of Arizona

While the findings may not solve the mystery of why exactly the Maya collapses occurred, they are an important step toward better understanding how they unfolded.

“It’s really, really interesting that these collapses both look very similar, at very different time periods,” said Melissa Burham, one of three UA anthropology graduate students who co-authored the paper. “We now have a good understanding of what the process looked like, that potentially can serve as a template for other people to try to see if they have a similar pattern at their (archaeological) sites in the same area.”

Inomata and his UA colleagues — anthropology professor Daniela Triadan and students Burham, Jessica MacLellan and Juan Manuel Palomo — worked with collaborators at Ibaraki University, Naruto University of Education and the Graduate University for Advanced Studies in Japan, and with Guatemalan archaeologists and students.

Radiocarbon dating was done at Paleo Laboratory Company in Japan and at the Accelerator Mass Spectrometry Laboratory in the UA Department of Physics.

“Radiocarbon dating has been used for a long time, but now we’re getting to an interesting period because it’s getting more and more precise,” said Inomata, who also is an Agnese Nelms Haury Chair in Environment and Social Justice at the UA. “We’re getting to the point where we can get to the interesting social patterns because the chronology is refined enough, and the dating is precise enough.”

Contacts and sources:
Alexis Blue
University of Arizona

Citation:High-precision radiocarbon dating of political collapse and dynastic origins at the Maya site of Ceibal, Guatemala   Proceedings of the National Academy of Sciences http://dx.doi.org/10.1073/pnas.1618022114


Source: http://www.ineffableisland.com/2017/01/archaeologists-uncover-new-clues-to.html


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