【摘要】 剪切带内的构造岩在韧性变形前后其稀土元素的含量发生有规律的变异，表现在随变形程度的增强，各稀土元素的含量及ＬＲＥＥ、ＨＲＥＥ、ＲＥＥ总含量均明显增加，而稀土配分模式不变。通过胶南造山带花岗质构造岩变形前后的等比分析，稀土元素的含量增加主要是由于构造岩变形之后较大的体积亏损所引起；并进一步根据含量变异与体积亏损之间的函数关系，求得花岗岩变形改造为糜棱岩的体积亏损率为１４．５％，改造为超糜棱岩的体积亏损率达２０％。更多还原

【Abstract】 The REE content of tectonic rocks in the shear zone shows regular variation in the deformation process. When the intensity of deformation becomes stronger, the contents of various rare earth elements and the contents of LREE, HREE and REE increase obviously, but the REE patterns remain unchanged. Through equal ratio analysis of granitic tectonic rocks before and after deformation in Jiaonan orogenic belt, the authors have reached the conclusion that the variation of REE results mainly from volume deficiency. According to the function relation between composition variation and volume deficiency, it is known that when granite changes into mylonite the volume deficiency ratio is 14.5%, and when granite changes into ultramylonite the volume deficiency ratio is 20%.更多还原