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News: FARMING FROM 6,000 YEARS AGO
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Stone basins may be Miwok salt 'factory'

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Kara Sundstrom
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« on: December 31, 2009, 03:17:32 am »

3 tons of salt a year

Salt springs are extremely rare in the Sierra Nevada, but Moore said the salt in the nearby streams probably comes from a layer of ancient marine sediment formed many millions of years ago when the area was covered by an ocean.

He said he believes the Miwok people carried water from the streams in watertight woven baskets, poured it into the basins and let it evaporate in the summer heat until the dry salt could be scooped out. The salt content of the water and the rate of water flow indicate that the two streams probably yielded about 3 tons of salt each year, Moore said.

The people of the area, he said, "had a large and valuable surplus to trade with other tribes - an early example of commerce by hunter-gatherer people."
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