摘要
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 <sup>40</sup>Ar/<sup>39</sup>Ar data of sodic amphibolesfrom the blueschists and discuss their possible geological significance.