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美国伯克莱地质年代学中心P.R.Renne等(1997)对采自意大利维苏威火山公元79年爆发喷出物中的透长石,进行了激光显微探针~(40)Ar/~(39)Ar定年,从46个分析数据中得到了~(40)Ar/~(39)Ar等时线年龄为1925±94 a,接近于与现今使用的格里历1918年前一致。这证明激光显微探针~(40)Ar/~(39)Ar定年法的可信度已扩展到记录人类历史的时间范畴。Renne等的最新研究成果把30多年来K-Ar地质年代学者对特别年轻火山岩的定年研究带入了一个新阶段,它为与晚新生代地质年代学有关的各种研究提供了一有力工具。
PRRenne et al. (1997) conducted the Berkeley Geochronology Center of the United States of America on the extraction of isotopes from the eruption of Mount Vesuvius in Italy in 79 AD. The laser microprobe (40) Ar / ~ ( 39) Ar dating, the ~ (40) Ar / ~ (39) Ar isochron age of 1925 ± 94 a was obtained from 46 analytical data, which is close to that of today’s Gregorian 1918. This proves that the confidence of the ~ (40) Ar / ~ (39) Ar dating method of laser microprobe has been extended to record the time scale of human history. The latest research results of Renne et al. Have brought the dating of K-Ar geochronologists over more than 30 years of particular young volcanic rocks into a new phase that provides a powerful tool for various studies related to the late Cenozoic geochronology.