Features formed from those igneous rocks that have reached or nearly reached the Earth's surface before solidifying. [Adapted from Glossary of Geology, 4th ed.]
Alexandria Digital Library Feature Type Thesaurus
Devils Postpile National Park geologic story [ More info] Site has links to Devils Postpile's geologic history, rocks and minerals, geologic time, geologic maps.
Earth tides and volcano monitoring [ More info] Article in the May 28, 1998 issue of Volcano Watch describing of correlation of earth tides to volcanic eruptions and value in monitoring underground magma movement with deformation measurement instruments including tiltmeters and strainmeters.
Encounters of aircraft with volcanic ash clouds; A compilation of known incidents, 1953-2009 [ More info] Of 129 reported incidents, 94 are confirmed ash encounters, 79 of which entailed airframe or engine damage; 20 are low-severity events involving suspected ash or gas clouds; for 15 the data are insufficient to assess severity.
Eruptions from the Inyo chain about 600 years ago: sequence of events and effects in the Long Valley Area [ More info] Describes the volcanic activity that occurred along the southern part of the Mono-Inyo Craters volcanic chain in California about 600 years ago.
Eruptions in the Cascade Range during the past 4,000 years [ More info] Chart showing 13 volcanoes on a map of Washington, Oregon, and northern California, along with time lines for each volcano showing the ages of their eruptions.
Eruptions of Hawaiian volcanoes - past, present, and future [ More info] Originally published in 1987, this general-interest booklet has been revised in anticipation of the Centennial of the Hawaiian Volcano Observatory (HVO) in January 2012.
Eruptions of Lassen Peak, California, 1914 to 1917 [ More info] Summary of the most recent eruption of Lassen Peak, Cascades (1914-1917)
Eruptions of Mount St. Helens: past, present, future [ More info] Online booklet on the 1980 eruption of Mount St. Helens, past history, and future hazards.
Geologic hazards at volcanoes [ More info] Poster diagram showing the various hazards that accompany volcanic activity as they relate to the structure of the volcano.
Geologic history of Long Valley Caldera and the Mono-Inyo Craters volcanic chain, California [ More info] Summarizes the geologic and volcanic activity of the Long Valley Caldera and Mono-Inyo Craters volcanic chain in east central California.
Alphabetical Index of Topics
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