摘要
本文利用两个铀矿床的含矿糜棱岩的显微构造与组构特征,对糜棱岩生成时的物理条件进行估算,結果得出如下数值:温度300℃,压力400MPa,差异应力46MPa和变形速率4.7×10^(-12)/s。上述数值比围岩高,可以解释糜棱岩与铀矿床在空间上和时间上的紧密联系。
In this paper, physical conditions are estimated using the features of microstructure and fabrics in mineralised mylonite and dynamically recrystallited grain size, subgrain size, dislocatoindensity and deformed rocks. The obtained results are temparature 300℃, Pressure 400MPa, differential stress 46MPa and deformation rate 4.7×10^(-12)/s. These data of mylonite are larger than those of the rocks around, so we may use these results to explain the close rela tions between the mylinite and uranium deposits both on the space and time.
出处
《华东地质学院学报》
1989年第1期1-6,101,共6页
Journal of East China Geological Institute
