A reconnaissance oxygen-isotope study of gold-bearing quartz veins within the metasedimentary rocks of the Valdez Group from around Prince William Sound was conducted to examine the variations and similarities within and between the different gold districts, and to investigate the origin of the ore-forming solutions. Analyses were made of mineralized samples from mines and prospects in the Port Valdez, Port Wells, Girdwood, Hope-Sunrise, and Moose Pass gold districts.

In the Hope-Sunrise district the δ18O values of the gold-bearing veins are relatively constant, ranging from + 16.0 to + 16.7 ‰, whereas in the Port Valdez district, the vein...

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