岩石化学、球化学特征表明，该组火山岩属碱性玄武岩系列大西洋型(质类型)具洋岛特征。
It belong series of the alkaline basalt, and have character of island ocean in geochemistry and petrochemistry.
枕状熔岩的岩石学、岩石化学和地球化学研究表明，它是海底玄武岩的产物。
The study on petrology, lithochemistry and geo-chemistry of the pillow lava shows that it is the product of submarine basalt.
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