Geologic and Tectonic Evolution of Annette, Gravina, Duke, and Southern Prince of Wales Islands, Southeastern Alaska
<p>Annette, Gravina, Duke, and southern Prince of Wales Islands are underlain primarily by Cambrian (and perhaps Proterozoic) through Triassic volcanic, sedimentary, plutonic, and metamorphic rocks. These rocks belong to the Alexander terrane, which is a coherent tectonic fragment that underli...