The Prince William Sound region may be considered as made up of two extensive and distinctive mineral belts defined by the preponderance of either gold or copper deposits (Capps and Johnson, 1915). In the Seward and Blying Sound quadrangles, the division of the two belts is approximately along the Contact fault, which trends northeast across the quadrangles. The gold belt includes the Moose Pass-Hope district and the Port Wells district. The copper belt is exposed mainly on Latouche, Elrington, Bainbridge, Knight, Chenega, and Glacier Islands and the mainland area between Unakwik Inlet and Columbia Bay.