Abstract—The restoration of the evolution of the Elbrus Volcanic Center (EVC) is of great importance for predicting possible eruptions. Some stages of its development occur in a time interval that is difficult to measure by conventional radioisotope techniques. In this regard, in this work, we studied the possibility of using the dating method by radiation centers in quartz for which the concentration was measured with electron paramagnetic resonance (EPR) spectroscopy. When dating lava flows with an age of less than 50 ka, there is a good convergence of the results obtained by the EPR dating, radiocarbon, and comparative geomorphological methods. Due to the low thermal stability of radiation centers in quartz, in some cases, the measured values of age reflect a later thermal impact of overlying lava flows or intrusive bodies. The improved technique of EPR dating with intermediate annealing led to results that have better convergence with the data obtained by the ⁴⁰Ar/³⁹Ar and K–Ar methods for rocks older than 50 ka.

摘要——厄尔布鲁士火山中心（EVC）演化的恢复对于预测可能的喷发具有重要意义。其发展的某些阶段发生在传统放射性同位素技术难以测量的时间间隔内。在这方面，在这项工作中，我们研究了在石英中使用辐射中心测年方法的可能性，其浓度是用电子顺磁共振 (EPR) 光谱测量的。当对年龄小于 50 ka 的熔岩流进行测年时，EPR 测年、放射性碳测年和比较地貌学方法获得的结果具有很好的收敛性。由于石英中辐射中心的热稳定性低，在某些情况下，年龄测量值反映了上覆熔岩流或侵入体的后期热影响。⁴⁰ Ar/ ³⁹ Ar 和 K-Ar 方法适用于超过 50 ka 的岩石。