| 摘 要： | This paper reports that the ages determined on the baked strata of 8 typical seciionsin the Datong volcanic cluster are within (0.98±0.02)×10~5yr. and (2.9±0.2)×10~5yr B. P.by using quartz thermoluminescence dating technique. The age values and stratigraphical position of the volcanic lava flow reveal that 4 typi-cal sections may be taken for the study of thc eras of Datong volcanic activities, i. e. the Yu-jiazhai section, 300,000 yr B. P.; the Yuangou section, 200,000 yr B. P.; the South Canyonsection of Heishan, 150,000 yr B. P.; the Huangjiawa section, 100,000 yr B. P.
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