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辉长岩SHRIMP锆石U-Pb测年结果确定:四川甘孜县城南7km水电站蛇绿岩的同位素地质年代为292±4Ma(n=21),表明甘孜-理塘特提斯洋盆形成于晚石炭世末或早二叠世初.综合前人研究成果分析,西南三江特提斯洋盆的形成是东冈瓦纳大陆于石炭纪至二叠纪大规模裂解的产物.
The SHRIMP zircon U-Pb dating of gabbro has determined that the isotopic geochronology of the ophiolite of the south 7km hydropower station in Ganzi County of Sichuan Province is 292 ± 4Ma (n = 21), suggesting that the Garzê-Litang Tethyan ocean basin was formed late Late Carboniferous or Early Early Permian.According to the analysis of previous research results, the formation of the Tethys Ocean Basin in the Three Gorges of the Southwest is the product of the large-scale pyrolysis from the Carboniferous to the Permian in the eastern Gondwana.