ISSN 1009-6248CN 61-1149/P Bimonthly

Supervisor：China Geological Survey

Sponsored by：XI'an Center of China Geological Survey
Geological Society of China

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    Geochemical Characteristics of Radiolarian Cherts in the Region of Eastern Junggar Kelameili

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    • Geochemically,radiolarian cherts samples from Nanm in shui Formation in middle section of Kelamaili show two distinct types of geochemist ries.One type of samples features midocean-deep sea sedimental element association:the values of Al2O3/(Al2O3+Fe2O3)from 0.11 to 0.19(<0.4),low ΣREE(6.34×10-6～26.37×10-6),low LaN/YbN(0.02～0.16),and the values of Ce/Ce* from 0.002 to 0.08,LaN CeNfrom 1.29 to 1.97.
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