 | What is a Geyser? A geyser is a vent in Earth’s surface that periodically ejects a column of hot water and steam. Photo by E. Mackin, National Park Service. |
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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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What is Earth Science? It is the study of Earth and its neighbors in space. It includes geology, astronomy, meteorology & oceanography. |
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Diamond: Articles, news, videos, production data, graphs, and information related to gem and industrial diamond worldwide. |
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Marcellus Shale: The most overlooked resource in the eastern United States! |
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Roadside Geology Guides:
Learn about the geology of your favorite state as seen along the highway. Filled with maps, photos, park locations and detailed descriptions. Get one before your next trip. |
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Herkimer Diamonds: Learn how to find these doubly terminated quartz crystals at Herkimer, NY. |
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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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NASA Images and Articles: Spectacular images of planets and galaxies, plus interesting articles about NASA missions and discoveries. |
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Volcanoes! A page that links to all of our volcano articles and to the best volcano information that we could find. |
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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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Mount Vesuvius: An interesting article with photos and maps that describes the volcano's eruption history, geologic hazards, plate tectonics and more. By Jessica Ball. |
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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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Banded Iron Formations: A new depositional model has been proposed for the origin and environment of the banded iron formations. |
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Climate Change Research: Penn State professor Richard Alley, a leading climate researcher, explains climate change impact. |
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Tambora Volcano Photo: An astronaut image of the Tambora caldera. Site of the most powerful recorded volcanic eruption. |
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Volcanic Eruption Types: An article with photos of Hawaiian, Strombolian, Plinian and other eruption types by Jessica Ball. |
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Mars Meteorites: NASA's Mars Rovers are finding some interesting iron meteorites. Check out these images and descriptions. |
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Arenal Volcano: Learn about the geology, eruptive history, geologic hazards and plate tectonic setting. Article by Jessica Ball. |
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Volcanic Hazards: Learn about the many types of hazards associated with volcanoes in an article by Jessica Ball. |
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Planet Collision: Spitzer space telescope detects a planetery collision that occurred a few thousand years ago. |
 | | Mantle Hydrocarbons: New research finds that hydrocarbons might be formed in the mantle in the absense of organics. |
 | | Landslides: A USGS fact sheet explains different types of landslides and the kind of events that might trigger them. |
 | | Uses of Copper: One of the first metals widely used by people. Now it is used in almost every industry around the world. |
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Daily news for geology and earth science. Delivered to you free by RSS or email. |
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Geology Dictionary:
Look up definitions in our free geology dictionary. Hundreds of geology term definitions at your fingertips. |
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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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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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