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中国东部新生代玄武岩和大别-苏鲁超高压变质带中的含石榴石相橄榄岩,带来了发生在上地幔的尖晶石→石榴石相转变和铝辉石→贫铝辉石+石榴石的重要信息,为中国东部上地幔岩石结构分层奠定了重要基础.通过岩石学与实验岩石学的研究,推导出发生相转变的P-T条件,为建立中国东部大陆上地幔岩石分层结构提供了重要约束.尖晶石二辉橄榄岩向石榴石二辉橄榄岩相转变发生在55～70km,随着深度增加,石榴石二辉橄榄岩从富铝石榴石二辉橄榄岩(70～120km)转变为贫铝石榴石二辉橄榄岩(>120～150km).
The garnet peridotites in the Cenozoic basalts in the eastern China and the UHP metamorphic belt in the Dabie-Sulu UHP metamorphic belt brought the spinel → garnet phase transformation and the alumite → apatite + garnet in the upper mantle , Which laid an important foundation for the delamination of the upper mantle rock structure in the east of China.Based on the study of petrology and experimental petrology, the PT conditions for the occurrence of phase transformation were deduced, which provided the basis for establishing the stratigraphic structure of mantle rock on the eastern mainland of China Important constraints The transition from spinel lherzolite to garnet lherzolite occurs at 55 ~ 70km, and with increasing depth, the garnet lherzolites change from aluminum-rich garnet lherzolite (70 ~ 120km) to aluminum-poor garnet lherzolite (> 120 ~ 150km).