Digital World
Tectonic Activity Map (DTAM) - a new visualization tool which displays
a realistic synoptic view of present global tectonism by filling in the
cartographic gap between conventional geological maps and plate reconstruction
maps.
U.S. Geological
Survey: Volcano Hazards Program - A comprehensive overview of the
U.S. Geological Survey's Volcano Hazards Program and current volcanic
activity in the United States. Volcano Hazards Program monitors volcanoes
and collects the best possible scientific information on volcanoes in
the United States and elsewhere to reduce the risk from volcanic activity.
Volcano
Watch - a weekly feature provided by scientists at the Hawaiian Volcano
Observatory.
Earthquakes
101 - introduction to earthquaks from infoplease.com.
USGS:
Mount St. Helens, Washington -Cascades Volcano Observatory's Mount
St. Helens webpage, which covers all aspects of the volcano. includes
images, maps, background and current updates.
Plate
Tectonics - lesson covering the chemical and physical layers of the
Earth, historical development of the theory, and descriptions of the
location and types of plate boundaries.
