Data for 689

Sample identification
Record ID 689
Sample ID 77AWs137
Geographic location
Quadrangle Chignik
Latitude 56.226665
Longitude -158.481674
Processing information
Dating method K-Ar
Comment Chloritized, altered quartz diorite-small pluton intruding volcanic pile
Reference Wilson, 1978, 1980, Wilson et al, 1981, Wilson and Cox, 1983
Sample characteristics
Rock type quartz diorite
Mineral dated biotite
Analytic result
Age (my) 21.3