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    Detrital Zircon of 4100 Ma in Quartzite in Burang,Tibet [查看] DUOJi、WENChunqi、FANXiaoping、GUOJianci1、NIZhiyao、LIXiaowen、SHIYuruoandWENQuan
    A detrital zircon aged 4.1 Ga is discovered by the SHRIMP U-Pb method in a quartzite in Burang County, western Tibet. This is presently the oldest single-grain detrit al zircon in China. The Th-U ratios of the two testing points of the >4.0 Ga zircon are between 0.76 and 0.86, indicating their magmatic origin. This discovery ha s offered an important age for inve stigating the geological evolution of the Qinghai-Tibet Plateau.
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