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有关~(143)Nd/~(144)Nd比值与各种岩石类型的稀土型式间的关系,近年来已为一些学者所注意。通过对大洋和大陆玄武岩及其它岩石的~(143)Nd/~(144)Nd的比值与稀土型式间关系的探讨,发现在轻稀土亏损的样品中,~(143)Nd/~(144)Nd比值有偏高的趋势;反之,在轻稀土富集的样品中,~(143)Nd/~(144)Nd比值则相应有偏低的趋势。如果以整个地球的Sm/Nd=0.308为标准,那么,Sm/Nd>0.308即为轻稀土亏损的类型,Sm/Nd<0.308即为轻稀土富集的类型。它们分别具有较高和较低的~(143)Nd/~(144)Nd比值。
The relationship between ~ (143) Nd / ~ (144) Nd ratio and rare earth types of various rock types has been paid attention by some scholars in recent years. Based on the discussion of the relationship between the ~ (143) Nd / ~ (144) Nd ratio and the REE patterns of basalts and other rocks in the ocean and the continental China, it is found that ~ (143) Nd / Nd ratio tends to be high; on the contrary, the Nd ~ (144) Nd ratio in the light rare earth enriched samples has a correspondingly lower trend. If Sm / Nd = 0.308 for the entire earth, Sm / Nd> 0.308 is the type of light rare earth loss and Sm / Nd <0.308 is the type of light rare earth enrichment. They have higher and lower ~ (143) Nd / ~ (144) Nd ratios, respectively.