The ~(40)Ar/~(39)Ar Ar metamorphic ages of Tangbale blueschists and their geological significance in

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SINCE Tangbale blueschist was found in West Junggar of Xinjiang in 1983, its metamorphicage and tectonic significance have been discussed for a long time. However, no exact dat-ing has been done by now. In this note, we present the ~(40)Ar/~(39)Ar data of sodic amphibolesfrom the blueschists and discuss their possible geological significance. SINCE Tangbale blueschist was found in West Junggar of Xinjiang in 1983, its metamorphicage and tectonic significance have been discussed for a long time. However, no exact dat-ing has been done by now. In this note, we present the ~ (40) Ar / ~ (39) Ar data of sodic amphiboles from the blueschists and discuss their possible geological significance.
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