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Zircon SHRIMP dating of granites from Dulan, east segment of North Qaidam UHP belt shows that they are 406.6±3.5 Ma for Yematan-E, 407.3±4.3 and 397±6 Ma for Balijiehatan-W, 404.5±4.0 and 397.0±3.7 Ma for Shuiwenzhan-N, 380.5±5.0 Ma for Shuiwenzhan-S, 382.5±3.6 and 372.5±2.8 Ma for Chachagongma. These granites from Dulan represent the products of the third and fourth periods of Paleozoic magmatism...
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