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对滇西哀牢山双沟蛇绿岩进行了Ｕ－Ｐｂ年代学研究。龙塘辉长岩锆石Ｕ－Ｐｂ下交点年龄为３６２±４１Ｍａ；双沟斜长花岗岩给出Ｕ－Ｐｂ年龄３２８±１６Ｍａ。这一结果表明滇西地区存在海西期蛇绿岩套，为解决古特提斯洋形成时代问题提供了新的年代学依据。
The U-Pb chronology of the Shuangogou ophiolite in Ailaoshan, western Yunnan was studied. The zircon Pb-Pb dating of Longtang gabbro is 362 ± 41Ma, and the U-Pb age is 328 ± 16Ma in Shuanggou plagiogranite. This result shows that the Hercynian ophiolite suite exists in western Yunnan and provides a new chronological basis for solving the problem of the formation of the Gati Tethyan Ocean.