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What is a Geyser? Photos of geysers from around the world. What causes them, how often do they erupt, how high, conditions that produce them, eruption statistics and lots more. |
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"A Grain of Sand": A gallery of sand grains from around the world as photographed through a microscope by Dr. Gary Greenberg. |
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Herkimer Diamonds: Learn how to find these doubly terminated quartz crystals at Herkimer, NY. |
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Marcellus Shale: The most overlooked resource in the eastern United States! |
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What Does a Geologist Do?
Learn about the interesting work of geologists and watch two short videos about the relevance of geology today.
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Earth at Night: One of NASA's famous images. It's not a map of population, it is a map of electricty use. |
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Volcanic Ash:The recent eruption of Chaitén blanketed large areas of Chile and Argentina with ash. |
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Below Sea Level: Satellite map of places below sea level with descriptions and elevations |
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The Science of Fireworks: Learn how fireworks bursts of different shapes and colors are produced through chemistry, physics and art. |
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Human Carbon Dioxide: Human activities add an average of almost 1.4 metric tons of carbon per person per year to the atmosphere. |
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Great Bahama Bank: A spectacular satellite image of the Bank, islands and surrounding ocean - a classic carbonate environment. |
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Detecting Buried Faults: NASA scientists used satellite radar data to learn about a buried fault located several miles below Earth's surface. |
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Redoubt Volcano: Now showing signs of possible eruption, Jessica Ball describes Redoubt's eruptive history, hazards & tectonics. |
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Alaska Coastal Erosion: Erosion rates have doubled in northern Alaska - up to 45 feet per year. View recent USGS photos on the Beaufort Sea. |
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Natural Oil Seeps: Natural seeps contribute significant amounts of oil to the environment? NASA Images. |
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East Africa Rift Lava Flows: Satellite images from NASA document probable fissure eruption lava flows in the Erta Ale Range of Afar, Ethiopia. |
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Stromboli Volcano: Jessica Ball describes the geology, tectonics, hazards and history of Stromboli Volcano. |
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Iron Meteorites: Learn about iron meteorites in this interesting article by Geoffrey Notkin of Aerolite Meteorites. Lots of great photos. |
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Mount Etna: Learn about Etna’s eruption history, plate tectonics and more in this article by Jessica Ball. |
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Impactites:"Impactites - Ghostly Footprints of Ancient Meteorites" by Geoffrey Notkin of Aerolite Meteorites. Learn about impact breccia, Libyan desert glass and more. |
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Mount Vesuvius: An interesting article on the volcano's eruption history, geologic hazards, plate tectonics and more. By Jessica Ball. |
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Concealed Glaciers on Mars: They are covered by a layer of rocky debris that has now been penetrated by radar. Article by the University of Texas at Austin. |
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Nitrogen Trifluoride Gas: is thousands of times more effective at warming the atmosphere than an equal mass of carbon dioxide. |
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Hurricane Ike Storm Surge: NASA has released a satellite image of the Louisiana Gulf Coast that shows the impact of Hurricane Ike’s storm surge. |
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Largest Impact Crater: NASA scientists have discovered evidence for what they believe is the largest impact crater in the solar system - on Mars. |
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Water on Mars: NASA scientists say that they have "touched and tasted" water on Mars. |
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Eruptions at Okmok Caldera: warning levels have recently been to RED. Seismicity, ash plumes, steam, and heavy sulfur dioxide emissions have been seen. |
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Geology of Mercury: New data from NASA reveals Mercury's volcanoes, impact craters, core, magnetic field and crustal processes. |
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The Tunguska Blast: One hundred years ago a meteoroid exploded above the surface of Siberia. A new look at this famous event. |
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Ice on Mars: The Phoenix Mars Lander may have found a frozen water layer in the shallow subsurface of Mars. |
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Bakken Formation Oil: A USGS assessment finds lots of undiscovered oil resources in Montana and North Dakota. |
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Phoenix Mars Lander: Artist's impression of the landing, and some of the first landscape and soil views. |
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New Phobos Images: NASA images from the Mars Reconnaissance Orbiter show crater chains and more. |
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Barnett Shale: The first gas play using the unconventional gas recovery style of horizontal drilling. |
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Ametrine: The bicolor quartz gemstone with a name derived from AMEThyst and ciTRINE. |
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Antarctic Ice Loss: A NASA study indicates faster melting in the antarctic than originally thought.. |
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Homeowners Insurance: The typical homeowners policy does't cover natural hazards. It is simply a fire and liability policy. |
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Expansive Soil: Causes more damage than earthquakes, floods, hurricanes & tornadoes combined. |
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Topaz: Topaz is a silicate mineral most often found in igneous rocks of felsic composition |
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Corundum: Abrasives, rubies and sapphires are some of the many uses of corundum. |
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Kyanite: The industrial mineral used to make porcelain, fire brick, gemstones and more. |
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Uses of Diamonds: Diamonds are used as a gemstone and for many other interesting things. |
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The Many Uses of Gold: Learn how the unique properties of gold make it extremely suited for a large number of industrial uses. |
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Uses of Granite: The rock used for everything from kitchen counters to street curbing to the facing stone of skyscrapers. |
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Uses of Magnetite: Used as a source of iron, as a heavy media, as an abrasive and much more. |
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