Start Date: End Date: Published Date Data Date
NASA Radar Provides 3-D View of San Andreas Fault
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Published June 23, 2009
Where the Pacific plate and North American plate meet, the intense pressure of the collision creates an 800-mile-long fracture zone.
Related images:
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Mars and Earth: Columnar Jointing
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Published June 10, 2009
Although Mars is in many ways quite different from Earth—smaller, colder, drier, and hostile to life—the geology of the two worlds is sometimes quite similar. Columnar jointing—a distinctive pattern of hexagonal cracks—is visible in rocks on both planets.
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Day Fire in Southern California
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Published September 22, 2006
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Lava Dome on Mount St. Helens
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Published October 7, 2004
After more than a decade of inactivity, Mount St. Helens rumbled back to life in September 2004. An ongoing series of tremors within the volcano coupled with upward movement of magma toward its caldera prompted geologists to issue a Level 3 alert on October 2, stating that Mount St. Helens could experience a moderately severe eruption at any time. In order to help geologists and volcanologists assess the nature and magnitude of the risk, on September 24, 2004, NASA flew a low-altitude aircraft carrying the MODIS/ASTER Airborne Simulator (MASTER) directly over the volcano to obtain high-resolution images of its caldera.
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Fires in California
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Published July 23, 2004
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Fires in Oregon
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Published September 3, 2003
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Williams Fire Northeast of Los Angeles
Published September 27, 2002
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