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依据质量平衡原理,从地球化学组成探讨了庐山双桥山群泥质岩系在区域变质作用过程中岩石的质量迁移和元素活动,结果表明黑云母片岩和(十字)石榴片岩相对于板岩,其质量分别损失了约17％和23％,元素Si、Na、K、Rb、Sr有明显的活动迁移,Al、U、REEs等也有一定的活动性。岩石质量迁移与元素活动是区域变质过程中变质流体作用的结果。
Based on the principle of mass balance, the mass migration and elemental activities of the mudstone in the Shuangqiaoshan group in Lushan Mountain during regional metamorphism were discussed from the geochemical composition. The results show that the biotite schist and (Cross) pomegranate schist relative to slate, The masses lost about 17% and 23% respectively, and the elements Si, Na, K, Rb and Sr obviously migrated. Al, U and REEs also had certain activities. Rock mass migration and elemental activity are the result of metamorphic fluids during regional metamorphism.