古新世晚期由于太平洋板块洋脊俯冲，日本海(西部)第一次拉张。

Due to the subduction of Pacific Plate at late Palaeocene, the western part of Japan Sea was pulled-apart.

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样品同时具备E-MORB和OIB的特征，说明古特提斯洋在漫长的演化过程中可能存在地幔柱岩浆和正常洋中脊亏损地幔岩浆的相互作用。

All the eclogite samples with the feature of both E-MORB and OIB indicate a plume-ridge interaction or hotspot-ridge interaction during the evolution process of Paleo-Tethys.

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