Title: Geologic reconnaissance of Semisopochnoi Island, western Aleutian Islands, Alaska
First published: 1959
Subjects: Basalt, Geology, Igneous Rocks, Lava flows, Petrology, Rocks, Igneous, Rocks, Sedimentary, Sedimentary Rocks, Sedimentation and deposition, Volcanic ash, tuff, Volcanism, Volcanoes
Places: Alaska, Aleutian Islands