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出露在西阿尔卑斯和中国的含柯石英榴辉岩记录了其峰期变质作用在2.5GPa的压力条件下，温度为550～900℃。形成这些区域变质岩，需要大于400km2的土地壳物质俯冲到≥90km的深度，并且再连续剥露。已有的实验动力学资料表明，在有流体存在的情况下，纯的柯石英岩石不可能在剥露中残存，这一点已被野外观察所证实。柯石英的部分残存与它们的产出状态相联系，它们作为包体产于变斑晶中，这样就能够保持内部的高压，并阻止流体的进入。若柯石英已经消失，其先前存在的可靠标志是近于平行的，有时也为弯曲的石英亚颗粒和截断其它晶面的亚颗粒。多晶石英集合作和从包体向外放射的裂隙不是超高压变质作用的首要证据。柯石英区域变质岩要求冷却发生在剥露期间。其冷却要求：（1）在榴辉岩剥露期间，俯冲在柯石英榴辉岩地体的底部继续发生，热可以传导到下伏岩石中；或（2）拉张构造（如低角度正断层或剪切带）的下板片向地表的迁移。两种作用都可以发生，但没有一种作用需要迅速的剥露速率，尽管Dora－Maira地块不同位置的p－T轨迹的放射性测年表示了平均长期剥露速率为3．00km／Ma。
The coesite-bearing eclogites that were exposed in the Western Alps and China recorded a peak metamorphism at a pressure of 2.5 GPa and a temperature of 550-900 ° C. The formation of these regional metamorphic rocks requires that the crustal material of more than 400 km 2 is subducted to a depth of ≥90 km and is continuously exposed again. The available experimental kinetic data show that in the presence of fluid, pure coesite rocks can not survive the exfoliation, which is confirmed by field observations. Part of the coesite remnant is linked to their state of output, and they are produced as inclusions in the speckle, thus keeping the internal high pressure and preventing fluid from entering. If coke quartz has disappeared, its pre-existing reliable marks are nearly parallel, and sometimes also sub-particles of bent quartz and truncated other crystal faces. The polycrystalline quartz assemblages and the fractures that radiate outward from the inclusions are not the primary evidence of UHP metamorphism. Coke quartz metamorphic rocks require cooling during the exposure period. The cooling requirements are: (1) Subduction continues to occur at the bottom of the coesite eclogites during eclogite exhumation, and heat can be conducted into the underlying rock; or (2) Tensioned structures (such as low-angle normal faults Or shear band) of the lower plate to the surface migration. Either action can occur but none of the effects require a rapid rate of exhumation although the radiometric dating of p-T trajectories at various locations in the Dora-Maira mass tract indicates an average long-term excursion rate of 3.00 km / Ma.