论文部分内容阅读
用~(40)oAr/~(39)Ar法测定了四川西部雀儿山地区的两个样品(黑云母和角闪石)。测定结果,黑云母的坪年龄为247.2±0.3Ma;等时线年龄为245.8±0.3Ma;热事件年龄为86.7Ma。角闪石的坪年龄为157.6±0.2Ma;热事件年龄为38.8Ma。
Two samples (biotite and amphibole) in the Queershan area of western Sichuan have been determined by ~ (40) oAr / ~ (39) Ar method. The results showed that the average age of biotite was 247.2 ± 0.3Ma, the isochron age was 245.8 ± 0.3Ma, and the thermal event was 86.7Ma. Amphibole Ping age 157.6 ± 0.2Ma; thermal event age 38.8Ma.