甘肃北山前红泉金矿床绢云母40Ar-39Ar年龄及其地质意义
丁书宏

40Ar-39Ar Age of Sericite and Its Geological Significance in Qianhongquan Gold Deposit, Beishan Area,Gansu Province
Shuhong DING
表1 前红泉金矿蚀变绢云母Ar-Ar测年结果
Table 1 Ar-Ar dating results of altered sericite in Qianhongquan gold deposit
温阶/℃40Ar/39Ar)m36Ar/39Ar)m37Ar/39Ar)m40Ar/%F(40Ar*/39Ar)39Ar/(×10-14 mol)39ArCum./%年龄/Ma±1σ/Ma
80023.95640.00870.027889.3121.39602.113.83228.71.2
90024.03280.00170.014497.8923.52638.4015.24249.91.2
1 00023.65820.00050.004899.3923.513618.7534.05249.81.2
1 10023.64480.00020.005499.6823.570313.5324.56250.41.2
1 20023.77410.00020.002999.7123.706312.0121.80251.71.2
1 30026.64590.01130.005187.4223.29400.290.52247.63.8