在南大别花凉亭地区冷榴辉岩退变为斜长角闪岩的过程中，Fe、Mg、Mn、Dy、Ho、Er、Tm、Yb、Lu、Y、Li、Sc、Cr、Co、Zr、HfNb、Ta逐渐降低，而Si、Ca、Na、La、Ce、Pr、Nd、Sm、Eu、Gd、Tb、Sr、Sn、Pb、Th、U逐渐升高。这一变异特征受折返减压退变过程中矿物相转变和流体的作用控制。多硅白云母和黑云母是制约退变冷榴辉岩元素Rb、Cs、Ba、Sr、K的主要矿物相． Fe, Mg, Mn, Dy, Ho, Er, Tm, Yb, Lu, Y, Li, Sc, Cr and Co in the process of extinction of cold eclogite into amphibolite in the flower pavilion of South Dabiehua. Zr, HfNb and Ta gradually decrease while Si, Ca, Na, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Sr, Sn, Pb, Th and U gradually increase. This variation is controlled by the mineral phase transition and the fluid effect during the reentry decompression degeneration. Polysilicate and biotite are the main mineral phases that constrain the Rb, Cs, Ba, Sr and K elements of degenerated cold eclogite.