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Science Forum Index » Archaeology Forum » NEW DISCOVERY ON ANCIENT CHACO TURQUOISE SOURCES...
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 Posted: Sun May 04, 2008 3:57 pm |
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Guest
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Listeros,
30 years ago, archaeological scientists using neutron activation
analysis proved that turquoise mosaics from Chichen Itza going back to
900 AD used raw material from the Cerillos mine near Santa Fe, New
Mexico, over 2000 miles away. It was assumed that the large site of
Chaco in New Mexico used turquoise from the same Cerillos mine.
The Journal of Archaeological Science reports that a new technique was
used on 11 samples dating from 550-1050 AD from Chaco Canyon sites
called source characterization which measures copper and hydrogen
isotope ratios using ion mass spectrometry. The scientists found that
only two of the 11 samples came from Cerillos and the rest came from
Orogrande in southern New Mexico and #8 mine in northern Nevada and
one from the Montezuma source in southern Nevada.
Norman Hammond wrote this news item for the London Sunday Times and
suggests all Mesoamerican turquoise items should now be studied anew
to understand the complexity of the ancient turquoise trade.
Journal of Archaeological Science 35; 1355-1369
http://www.timesonline.co.uk/tol/life_and_style/court_and_social/article3872341.ece
Here is a tiny URL;
http://tinyurl.com/4v566s
Mike Ruggeri's The Casas Grandes World and the Turquoise Road
http://tinyurl.com/33gpu2 |
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