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本文研究了赣中变质基底的Ｎｄ同位素组成。前震旦系变质沉积岩：１４３Ｎｄ／１４４Ｎｄ＝０５１１８２７—０５１２０５２，ＴＤＭ＝１５９７—２１２４Ｍａ，∈Ｎｄ（Ｔ）＝－３６０～＋１１１；震旦系浅变质沉积岩：１４３Ｎｄ／１４４Ｎｄ＝０５１１９１８—０５１２２３３，ＴＤＭ＝１３６０—１４０５Ｍａ，∈Ｎｄ（Ｔ）＝－３２６～－０５５。上述Ｎｄ同位素特征表明：赣中前震旦系变质沉积岩的物源来自其东北缘华夏地块的基底碎屑和岛弧地区的幔源火山物质；而震旦系浅变质沉积岩的物源主要来自前震旦系的剥蚀，并有一定量的幔源物质加入；上述研究亦为赣中变质基底归属于华夏地块提供了重要的同位素证据。
This paper studies the Nd isotope composition of the metamorphic basement in Jiangxi Province. Former Sinian metamorphic sedimentary rocks: 143Nd / 144Nd = 0511827-0512052, TDM = 1597-2124Ma, εNd (T) = -360 ~ + 111; Sinian shallow metamorphic sedimentary rocks: 143Nd / 144Nd = 0511918-0512233, TDM = 1360-1405Ma, εNd (T) = -3.26 ~ -055. The characteristics of the Nd isotopes indicated that the source rocks of the former Sinian meta-sedimentary rocks in the central Jiangxi origin from the basement crusts of the Huaxia block in the northeastern margin and the mantle volcanics in the island arc area. The source rocks of the Sinian meta-metamorphic sedimentary rocks are mainly from the foreshocks Denudation of denudation and a certain amount of mantle source material added. The above study also provided important isotopic evidence that the metamorphic basement of the central Jiangxi belongs to the Huaxia block.