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岚山头含柯石英榴辉岩呈透镜状构造块体产于晚元古代含霓石碱长花岗质片麻岩中，其原岩为玄武岩浆分离结晶晚期堆积的辉长岩。该榴辉岩典型的共生矿物组合可划分为4个世代：①Cpx1＋Mu1（OrPhen1）＋Qz＋Pl1；②Cpx2（Om1）＋Gr1＋Ky＋Cs；③Cpx3（Om2）＋Gr2＋Phen2＋Ky＋Zo＋Qz；④Pl2＋Tl＋Mrg＋Phen3＋Czo＋Qz。它们分别反映4个变质演化阶段：前榴辉岩相阶段（M1）、柯石英榴辉岩相阶段（M2）、后榴辉岩相第一退变质阶段（M3）及后榴辉岩相第二退变质阶段（M4）。各阶段的变质条件；M1为P≤1．56Gpa，T＝700℃；M2为P＝2．74～2．95GPa，T＝722℃～981℃；M3为P＝1．34～1．54GPa，T＝568℃～589℃；M4为P＝0.61～1．04GPa，T469℃。柯石英榴辉岩相阶段（M2）末期的年龄为613．3±30．4Ma，榴辉岩相第二退变质阶段（M4）的多硅白云母40Ar－39Ar坪年龄为313．49Ma。据上述资料再塑了一个较完整的顺时针PTt轨迹。
The limestone-bearing eclogites from the Lanshan head are lenticular tectonic blocks occurring in late Proterozoic gneissic granitic gneiss. The protoliths are gabbro deposited later in the basalt magma separation and crystallization. The typical symbiotic mineral assemblages of the eclogite can be divided into four generations: ① Cpx1 + Mu1 (OrPhen1) + Qz + Pl1; ② Cpx2 (Om1) + Gr1 + Ky + Cs; ③ Cpx3 (Om2) + Gr2 + Phen2 + Ky + Zo + Qz; ④ Pl2 + Tl + Mrg + Phen3 + Czo + Qz. They respectively reflect four metamorphic evolution stages: the former eclogite facies (M1), the coesite eclogite facies (M2), the first eclogite metamorphism (M3) and the later eclogite facies Second metamorphic stage (M4). M1 is P≤1.56Gpa, T = 700 ℃; M2 is P = 2.74 ~ 2.95GPa, T = 722 ℃ ~ 981 ℃; M3 is P = 1.34 ~ 1.54GPa , T = 568 ℃ ~ 589 ℃; M4 is P = 0.61 ~ 1.04GPa, T469 ℃. The age of the end of Kexing quartz eclogite facies (M2) is 613.3 ± 30.4Ma, and the age of 40Ar-39Ar of silicic muscovite is 313.49Ma in the second metamorphic stage (M4) of eclogite facies. According to the above information a more complete clockwise PTt trajectory.