Title: The structure and stratigraphy of Gravina and Revillagigedo Islands, Alaska
First published: 1918
Subjects: Formations (Geology), Geology, Sediments (Geology), Volcanic ash, tuff
Places: Alaska, Alaska) Gravina Island (Ketchikan Gateway Borough, Gravina Island (Ketchikan Gateway Borough, Alaska), Revillagigedo Island (Alaska)