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辽西阜新地区早白垩世义县旋回火山岩有明显的特殊性。该时期火山岩各岩石微量元素分配型式曲线基本协调一致,呈明显的“W”型,其异常值反映该旋回火山岩既有地壳岩石、花岗质岩石及同化混染的玄武质岩石成因信息,也有幔源的信息;稀土元素总量较高,为轻稀土富集型岩石;δEu显负异常或异常不明显;偏碱性岩石为晚期分离结晶作用的产物或熔融上部地壳物质所致。
The Early Cretaceous Yixian cyclotric volcanic rocks in Fuxin area of western Liaoning Province have obvious peculiarities. The distribution patterns of trace elements in volcanic rocks during this period are basically in accordance with the pattern of “W ”. The abnormal values reflect the information of both crustal rocks, granitic rocks and assimilated basaltic rocks of the volcanic rocks , And also mantle-derived information. The total amount of rare earth elements is light rare earth enriched rocks, and δEu is negatively anomalously or anomalously obvious. Alkaline rocks are the products of late segregation crystallization or the melting of the upper crust.