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Temple timbers trace collapse of Mayan culture
June, 03 2009
This page is viewed 374 times
New Scientist
THE builders of the ancient Mayan temples at Tikal in Guatemala switched to inferior wood a few decades before they suddenly abandoned the city in the 9th century AD. The shift is the strongest evidence yet that Mayan civilisation collapsed because they ran out of resources, rather than, say, disease or warfare.
Researchers led by David Lentz, a palaeoethnobotanist at the University of Cincinnati in Ohio, sampled wooden beams and lintels from all six major temples and two palaces within the ancient city of Tikal. The first three temples, built before AD 741, used only large, straight logs of the sapodilla tree - a particularly strong wood that is nevertheless easy to carve with ceremonial inscriptions.
But after that date, large sapodilla logs were almost entirely replaced in temple construction by logwood, a smaller, gnarly tree that is almost impossible to carve. "It's definitely an inferior material," says Lentz, who reasons that the temple-builders would only have accepted logwood if they had run out of suitable sapodilla trees to harvest (Journal of Archaeological Science, DOI: 10.1016/j.jas.2009.01.020).
Earlier studies of pollen deposits have suggested that deforestation and soil erosion were increasing in the region as Mayan civilisation neared its collapse. But the temple timbers of Tikal are the first to show that ecological overexploitation directly affected Mayan culture.
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Researchers led by David Lentz, a palaeoethnobotanist at the University of Cincinnati in Ohio, sampled wooden beams and lintels from all six major temples and two palaces within the ancient city of Tikal. The first three temples, built before AD 741, used only large, straight logs of the sapodilla tree - a particularly strong wood that is nevertheless easy to carve with ceremonial inscriptions.
