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大别山不仅出露含柯石英和含金刚石的榴辉岩,而且有相当面积的麻粒岩相岩石和角闪岩相岩石。近年已应用多种年代学方法对榴辉岩进行了较为系统的定年研究,但有关麻粒岩相岩石的年代学研究少有报道,因而尚不能为了解麻粒岩与榴辉岩的成因联系,特别是为探索大别杂岩前寒武纪构造演化提供年代学制约。本文拟对中酸性麻粒岩和侵入其中的变形花岗岩的单晶-微量锆石U-Pb定年结果进行报道。
The Dabie Mountains not only reveal eclogite containing coesite and diamond-bearing eclogite, but also have considerable area of granulitic rock and amphibolite rock. In recent years, a variety of geochronological methods have been used to systematically study the eclogite. However, the chronological studies on granulite-facies rocks have not been reported yet. Therefore, it is still impossible to understand the genetic relationship between granulite and eclogite , Especially for exploring the evolution of the Precambrian tectonic evolution of the Dabie complex. In this paper, we report the results of U-Pb dating of monoclinic-trace zircons from intermediate-acid granulites and deformed granites intruded into them.