Abstract: The ages of bake layers of xenolith within the volcanic lava associated with the recent eruption in Wudalianchi volcanic cluster have been dated by TL dating technique for the first time. The results ((264±19)a B.P. and (273±19)a B.P.) are consistent with historical record (1719～1721) of the volcanic eruption in the error range. It shows that the lava made of these volcanoes is the eruptive materials with the corresponding period. And it also indicates that the very young ages of volcanic eruption can be dated accurately by TL technique which provides a reliable dating method for resuming recent eruptive history.

Key words: Wudalianchi volcano group, Thermolumincscent method, Xenolith

摘要： 首次利用TL测年技术,测定了五大连池火山群中两座最新喷发的火山熔岩中的烘烤捕虏体的年代。测定结果((264±19)aB.P.,(273±19)aB.P.)在误差范围内与喷发的历史记载(1719～1721年)一致,表明这两座火山是同期喷发的产物,同时也表明利用TL测年技术能比较准确地测定年轻火山活动的年代,它为恢复火山最新喷发历史的研究提供了一种比较可靠的年代测定途径。

关键词: 五大连池火山群, 热释光法, 捕虏体