Sample %39Ar 37Ar/39Ar 36Ar/39Ar 40Ar*/39Ar %40Ar* Age (Ma) SD

 

DMS89-143B (Glass / 61A)

5091-01A 10.3 1.2967 0.02850 2.6739 24.3 13.684 3.140

5091-01B 41.6 0.6636 0.00721 2.6413 55.9 13.518 0.724

5091-01C 15.7 1.8044 0.01330 2.5902 40.6 13.257 1.893

5091-01D 10.9 2.3462 0.02053 3.1109 34.5 15.910 4.014

5091-01E 16.1 9.0472 0.02986 1.1159 12.0 5.723 2.036

5091-01F 6.0 631.3426 0.21296 48.4444 65.4 233.129 17.320

Plateau Age = 13.56 0.69 SE

 

Irradiation Data

41B J = 0.005920 0.0000090

61A J = 0.002847 0.0000036

61B J = 0.002783 0.0000024

98A J = 0.000478 0.0000006