Earth Revealed: Introductory Geology “Earthquakes” Explores the nature and consequences of earthquakes, the factors that cause quakes, their location and characteristics. Earth Revealed: Introductory Geology “Geologic Time” Helps students develop a sense of the vast amounts of time over which logic processes have been at work.
Category: Geology
Alaska’s busy volcano: Seawater, magma figure in eruptions
In this May 10, 1994, aerial photo provided by Alaska Volcano Observatory/U.S. Geological Survey shows the Bogoslof Island looking south. Trace amounts of ash and the smell of sulfur reached an Alaska city 61 miles away after the latest eruption of Bogoslof Volcano in the Aleutian Islands.