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《Acta Anthropologica Sinica》 1983-01
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URANIUM SERIES DATING OF "ORDOS MAN" AND "SJARA-OSSO-GOL CULTURE

Yuan Sixun Chen Tiemei Gao Shijun (Dating Laboratory, Archaeological Section, Department of History, Peking University)  
Some fossilized mammalian teeth and antlers collected from various stratigraphical position of primary Sjara-osso-gol sediment are dated by both 230Th and 231Pa methods. The results are: 1) The lower Sjara-osso-gol formation (lacustrine deposition) was accumulated between 30-50 thousand years B.P. The "Ordos man" and "Sjara-osso-gol Culture" are located in this formation. 2) The upper Sjara-osso-gol formation (alluvial deposition) is dated no more than 30 thousand years B.P.
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