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Taking a new look at old digs: Trampling animals may alter Stone Age sites
Date:9/23/2010

e been dozens of trampling experiments in archaeology to see how artifacts may be affected by animals walking over them. These have involved human trampling and the trampling of all sorts of animals, including elephants, in dry sediments," Eren said. "Our trampling experiments in dry sediments, for the most part, mimicked the results of previous experiments."

But this latest study added a new variable to the mix the trampling of artifacts embedded in ground saturated with water, Eren said.

Researchers from the United States, Britain, Australia and India were inspired to perform the unique experiment while doing archaeological survey work in the Jurreru River Valley in Southern India.

They noticed that peppering the valley floor were hardened hoof prints left from the previous monsoon season, as well as fresh prints along the stream banks. Seeing that the tracks sunk quite deeply into the ground, the researchers began to suspect that stone artifacts scattered on the edges of water bodies could be displaced significantly from their original location by animal trampling.

Early humans drawn to water's edge

"Prehistoric humans often camped near water sources or in areas that receive lots of seasonal rain. When we saw those deep footprints left over from the previous monsoon season, it occurred to us that animal trampling in muddy, saturated sediments might distort artifacts in a different way than dry sediments," Eren said. "Given the importance of artifact context in the interpretation of archaeological sites and age, it seems like an obvious thing to test for, but to our surprise it never had been."

Eren and seven other researchers tested their theory by scattering replicated stone tools over both dry and saturated areas of the valley. They then had water buffalo and goats trample the "sites." Once sufficient trampling occurred, the archaeologists proceeded to excavate the tools, taking careful measurements of w
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Contact: Margaret Allen
mallen@smu.edu
214-768-7664
Southern Methodist University
Source:Eurekalert  

Page: 1 2 3

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