Data for 684

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