中文摘要：

Coesite 提供直接证据为超离频压力变态。尽管 coesite 在北方 Qaidam 山的帕拉片麻岩在锆石作为包括被发现了，它从来没在 eclogite 被识别过。在这贡献，基于 petrographic 观察并且在 situ 拉曼微探查光谱学， coesite 从 Aercituoshan 在 eclogite 的石榴石作为包括被识别， Dulan UHP 变形单位，北方 Qaidam 山。Coesite 被石英部分代替，显示出一块栅质地。这是在从北方 Qaidam 山的 eclogite 的 coesite 上的第一份报告，并且被 garnet-omphacite-phengite geothermobarometry 也支持(2.7 3.25 GPa， 670 730 ° C ) 。Coesite 和它的假象没在 eclogites 被发现并且联系了北方 Qaidam 山的另外的单位的岩石。如果在北方 Qaidam 山的所有变形单位经历了超离频压力的变态，进一步的研究被要求证实。

英文摘要：

Coesite provides direct evidence for ultrahigh pressure metamorphism. Although coesite has been found as inclusions in zircon in paragneiss of the north Qaidam Mountains, it has never been identified in eclogite. In this contribution, based on petrographic observations and in situ Raman microprobe spectroscopy, coesite was identified as inclusions in garnet of eclogite from the Aercituoshan, Dulan UHP metamorphic unit, north Qaidam Mountains. Coesite is partly replaced by quartz, showing a palisade texture. This is the first report on coesite in eclogite from the north Qaidam Mountains, and is also supported by garnet-omphacite-phengite geothermobarometry （2.7--3.25 GPa, 670--730℃）. Coesite and its pseudomorphs have not been found in eclogites and associated rocks of other units of the north Qaidam Mountains. Further studies are required to confirm if all metamorphic units in the north Qaidam Mountains underwent the ultrahigh-pressure metamorphism.