中文摘要：

Myanmar 硬玉的一种(jadeitite ) 在在印度和欧亚的盘子之间的 collisional 带以内为它的节俭的价值和特殊构造地区是众所周知的。然而，它少些在区域由于险峻的地形学，不利天气和本地军事冲突为它的开始和 geodynamic 含意被学习。借助于联合 ICPMS 和 LA-MC-ICPMS 技术，我们在原处执行了为在一粒硬玉的一种宝石的锆石包括的微量元素， U-Pb 和 Lu-Hf 同位素取样。CL 成像建议锆石是在起源的交代矿床，并且包含硬玉的一种和 omphacite 的矿物质包括。锆石的 16 谷物上的七十五分析产出 158 ±的 U-Pb 年龄 2 妈。Myanmar 锆石不同于另外的类型因为尽管有高 HREE 集中，他们没有重要 Eu 异例。测量 ¹⁷⁶Hf/¹⁷⁷ Hf 比率从 0.282976 ～ 0.283122 ，与 0.283066 ±的平均价值 7；ε _{13.8 ±的 Hf} (t) 价值 0.3 (n=75 ) 。这些结果显示 Myanmar 硬玉的一种在迟了的侏罗记被形成，可能与披风楔由液体的相互作用免除了海洋的平板潜水艇 ducted。因此，它的形成没有基因关系到在印第安人和 Euroasian 盘子之间的大陆人碰撞。

英文摘要：

Myanmar jadeite （jadeitite） is well known for its economical value and distinctive tectonic locality within the collisional belt between India and Eurasian plates. However, it is less studied for its genesis and geodynamic implications due to precipitous topography, adverse weather and local military conflicts in the area. By means of combined ICP-MS and LA-MC-ICPMS techniques, we have carried out in-situ trace elements, U-Pb and Lu-Hf isotopes for zircon inclusions in a piece of jadeite gem sample. CL imaging suggests that the zircons are metasomatic in origin, and contain mineral inclusions of jadeite and omphacite. Seventy-five analyses on 16 grains of the zircons yield a U-Pb age of 158 ± 2 Ma. The Myanmar zircons differ from other types in that they have no significant Eu anomalies despite high HREE concentrations. Measured ^178Hf/^177Hf ratios range from 0.282976 to 0.283122, with an average value of 0.283066 ± 7; εHf（t） value of 13.8 ± 0.3 （n=75）. These results indicate that the Myanmar jadeite was formed in the Late Jurassic, probably by interaction of fluid released from subducted oceanic slab with mantle wedge. Therefore, its formation has no genetic relationship to the continental collision between Indian and Euroasian plates.