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 |