根据下部区域磁异常，推测地壳下部磁性层受后期的中、新生代岩浆作用的影响很大。
Moreover, from the lower regional magnetic anomaly it can be derived that the lower magnetic layer may be largely affected by the thermal events related to the Mesozoic and Cenozoic magmatism.
东沙高磁异常含一定的高频成份，与新生代玄武岩及中生代岩浆岩有关，而其低频成份可能反映了发育的下地壳高速层。
The high frequency part of Dongsha high-value magnetic anomaly may be related with Cenozoic basalt and Mesozoic magmatic rocks, and the low frequency part developing high-velocity lower crust.
强不相容元素比值反映岩浆源区明显偏离原始地幔组分，具有富集型异常地幔岩浆源区特征。
The ratios of incompatible elements reflected that the magma source departed from the composition of primary mantle and had the characteristics of the enriched metasomatic mantle.
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