摘要
由所谓的“均质混合岩”、“混合片麻岩”及“混合花岗岩”组成的张广河花岗岩体位于团风～麻城断裂带东侧 ,鄂、豫、皖三省交界的大别山腹地。其成因前人认为是大别群经强烈混合岩化作用的结果。笔者在 1:5万区调工作中依据地质产状、岩石矿物学、岩石化学、稀土及同位素成分等特征 ,确认为该岩体属岩浆侵位型花岗岩 ,属I型、钙碱性岩系。成岩物质主要来源于上地幔衍生物和下地壳岩石部分熔融物。
Situated to the east of Tuanfeng-Macheng faults, the Zhangguanghe granites consist of isotropic migmatite, compound gneiss, and migmatitic granite. And they were considered to be from migmatization of the Dabie Group. The authors, however, pointed out that these granites might belong the granite of magmatic emplacement in Dabie Group and be type I calcic-alkaline series, based on their occurrence, petromineralogy, petrochemistry, REE and isotopic elements data collected through geological survey at 1:50,000. Its source materials might come from the partial molten complex of the upper mantle and lower crust.
出处
《资源环境与工程》
2004年第3期25-30,49,共7页
Resources Environment & Engineering
