Sample identification | ||
---|---|---|
Record ID | 684 | |
Sample ID | 77AWs122 | |
Geographic location | ||
Quadrangle | Chignik | |
Latitude | 56.195 | |
Longitude | -158.316666 | |
Processing information | ||
Dating method | K-Ar | |
Comment | Minimum age, impure separate with incl. of plagioclase, mean of 2 determinations | |
Reference | Wilson, 1980, Wilson et al, 1981, Wilson and Cox, 1983 | |
Sample characteristics | ||
Rock type | dacite | |
Mineral dated | hornblende | |
Analytic result | ||
Age (my) | 22.37 |