geology
  Land Below Sea Level
Lands below sea level
Who Is Below Sea Level? Dozens of land areas are below current sea level. Explore them with a Google map.
  Most Popular
meteorites What are Meteorites? Join meteorite hunter, Geoffrey Notkin, as he begins a series of monthly articles on the topic of meteorites.
sliding rocks of racetrack playa Sliding Rocks of Racetrack Playa: How these rocks slide across a dry lake bed is a mystery. Learn what is thought to move them. © iStock / S. Hoerold
Maps of over 250 states, countries and provinces   Reference Maps:
  Country Maps
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Rock Photo Galleries   Rock Photo Collections:
  Igneous Rocks
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The work of geologists. What Does a Geologist Do?
Learn about the interesting work done by a geologist.
google map of the San Andreas Fault Google Map - San Andreas Fault: Zoom in to see the approximate location of the San Andreas.
marcellus shale gas Marcellus Shale: The most overlooked resource in the eastern United States!
Google map of asteroid impacts. Asteroid Impact Craters! Zoom in on 50 of Earth's largest impact craters with Google Maps.
rocks and minerals Rocks and Minerals:
View all of our Rock & Mineral articles and resources.
novarupta the most powerful volcano of the 20th century The Most Powerful Volcanic Eruption of the 20th Century:
A case of mistaken identity.
blood diamonds What are Blood Diamonds?
Have you seen the movie? Learn what "blood diamond" means.
herkimer diamonds Herkimer Diamonds: Learn how to find these doubly terminated quartz crystals at Herkimer, NY.
sea level rise map Sea Level Rise Map: A Google map that shows what will flood when sea level rises.
download google earth Download Google Earth Free!
High resolution 3D satellite views of Earth. Download it Free.
Kilauea lava photos Recent Photos of Kilauea Lava: Flows pouring into the Pacific. Spectacular USGS photos.
What is a geyser? 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.
bottled water geology The Geology of Bottled Water: It costs 1000x as much as tap water. What are you getting?
tsunami diagram What Causes a Tsunami?
Learn how plate motions trigger earthquakes and tsunamis.
google map of highest points in each state Highest Points in All 50 States: Google map of state high points.
meteor meteorite Meteors, Meteorites, Fireballs! What are those bright streaks in the night sky?
rock tumblers and tumbling instructions Free Guide to Rock Tumbling: Step-by-step guide to tumble and polish rocks into gemstones.
nasa articles and images NASA Articles and Images: Spectacular images and interesting articles from NASA.
what is the Moho What is the Moho? Learn about the Mohorovičić Discontinuity.
yosemite rockfall Spectacular Yosemite Rockfall:A photo sequence of the fall and debris avalanche by Herb Dunn.
coal through a microscope Coal Through a Microscope: Coal is more than a black rock. It's THE most interesting rock.
coal through a microscope Two-Minute Survey: Please help us and our advertisers understand Geology.com visitors. No information that identifies you is requested.
  Earth Science Records
World's Highest Mountain
Deepest Point in the Ocean
World's Largest Lake
World's Highest Waterfall
World's Deepest Lake
World's Largest Desert
World's Deepest Canyon
World's Largest Tsunami
  Free Printable Topo Maps
free printable topo maps
The present is the key to the past.
  Impactites
impactites
Impactites: A new article titled: "Impactites - Ghostly Footprints of Ancient Meteorites" by Geoffrey Notkin of Aerolite Meteorites. Learn about impact breccia, Libyan desert glass, moldavites, and shatter cones and more.
 Newest Articles & Content
Mount Vesuvius 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.
How much are meteorites worth? How much are meteorites worth? An article on collecting and values by Geoffrey Notkin of Aerolite Meteorites.
Water On Mars Star as Bright as 3.2 Million Suns: Spitzer telescope has revealed the second-brightest star in our galaxy.
glaciers on Mars 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.
carbon dioxide map Carbon Dioxide Map: NASA maps shed light on carbon dioxide's global nature.
Gas Hydrate Resources in Alaska Gas Hydrate Resource:
North Slope, Alaska
The United States Geological Survey's new assessment of gas hydrates in Alaska.
meteorite identification Identifying Meteorites: Geoffrey Notkin explains how to identify meteorites and tells you about meteor-wrongs.
meteorite classification How are Meteorites Classified? Meteorite hunter, Geoffrey Notkin, explains how meteorites are classified and shares some great photos.
Hurricane Ike Photos Hurricane Ike Damage Pictures: Oblique aerial photography of the Bolivar Peninsula - before and after Hurricane Ike's devastating storm surge.
East Africa Rift The East Africa Rift System: Learn some basics about the East Africa Rift System from this article by James Wood and Alex Guth of Michigan Technological University.
natural gas plays Natural Gas Shales: An explosion of natural gas leasing and drilling activity is happening across the United States. This summary page features several gas plays.
largest impact crater Largest Impact Crater: NASA scientists have discovered evidence for what they believe is the largest impact crater in the solar system - on Mars.
Volcanoes Volcanoes! A page that links to all of our volcano articles and to the best volcano information that we could find.
Observing Earth from Space Observing Earth from Space: Amazing satellite images that help us learn about Earth, appreciate its beauty and discover how it works.
Mineral Rights Mineral Rights / Oil & Gas: Who owns the minerals under your land? Have they been sold? Can someone mine without your permission?
Water On Mars Water on Mars: NASA scientists say that they have "touched and tasted" water on Mars.
Arctic oil and gas Arctic Oil and Gas Report: USGS finds enormous oil, natural gas and natural gas liquids north of Arctic Circle.
Okmok Volcano Eruptions at Okmok Caldera: warning levels have recently been to RED. Seismicity, ash plumes, steam, and heavy sulfur dioxide emissions have been seen.
biggest tsunami World's Largest Recorded Tsunami: A local tsunami in Lituya Bay, Alaska tops 1720 feet high. Map, photos and survivor accounts.
Chaiten Volcano Chaitén Volcano Erupts: Videos, pictures, maps, news, satellite images and facts for this volcano in southeastern Chile that is erupting for the first time in about 9000 years.
Geology of Mercury Geology of Mercury: New data from NASA reveals Mercury's volcanoes, impact craters, core, magnetic field and crustal processes.
Tunguska Impact Blast The Tunguska Blast: One hundred years ago a meteoroid exploded above the surface of Siberia. A new look at this famous event.
Fayetteville Shale Natural Gas Fayetteville Shale: Another huge natural gas field is discovered in northern Arkansas. Some think it might be 4th largest in the world.
Haynesville Shale Haynesville Shale: News, videos & information for this new shale gas resource in northern Louisiana and adjacent states.
Marcellus Shale Gas Marcellus Shale Resources: News, maps, videos and information for this important natural gas resource.
sand grains "A Grain of Sand": A gallery of sand grains from around the world as photographed through a microscope by Dr. Gary Greenberg.
Volcanic ash hazards Volcanic Ash:The recent eruption of Chaitén blanketed large areas of Chile and Argentina with ash.
human linked climate change   Human-Linked Climate Change: Many human activities influence climate change.
youngest supernova in Milky Way Youngest Supernova In the Milky Way: Discovery of supernova remnant G1.9+0.3.
oil drilling rig   Bakken Formation Oil: A USGS assessment finds lots of undiscovered oil resources in Montana and North Dakota.
India's Lonar Impact Crater India's Lonar Impact Crater: A 6000-foot wide crater formed about 35,000 - 50,000 years ago.
monitoring volcanoes from space Monitoring Volcanoes From Space: Learn how NASA keeps an eye on remote volcanoes.
Aurora Borealis Aurora Borealis in the Spring: Spring is the season for Aurorae. Images of the Aurorae and what causes them.
Elements of Geology a classic text Elements of Geology: A classic geology text written in 1871. The entire book republished here.
Oil is found first in the mind.
  Earth Science News
New York City Tsunami - 300 B.C.:  Researchers have found evidence that a tsunami occurred... more

Montserrat Volcanic Eruptions:  “The Montserrat Volcano Observatory’s weekly bulletin for December... more

Strategic Petroleum Reserve Increase:  The United States Department of Energy is taking... more

Cleaner Fuels for Minnesota?:  A bill that will require the petroleum industry... more

Oil and Politics:  An article in The Washington Times reviews some... more

Landslide in Guatemala:  A landslide occurred in the Polochic fault zone... more

Basalt Wall Found in Taiwan Straight:  A large basalt outcrop has been discovered on... more

Impactites: Meteorite Footprints:  We are pleased to have a new article... more

Yellowstone Earthquakes Podcast:  National Public Radio has a four-minute podcast on... more

Visiting Vesuvius and Pompeii:  An article in the Pittsburgh Post-Gazette describes the... more
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Earth Science Books for Kids
Earth Science Books For Kids: We just added 28 earth science books for students to our store. Rock, mineral, fossil and dinosaur books for ages 8 through 18. A great gift.
  For Teachers
Teacher resources Earth Science Teaching Ideas: Links to some of our own ideas and the best that we could find on the web.
plate tectonics drawing   Teaching Plate Tectonics: Ideas for teaching plate tectonics with easy-to-draw illustrations.
Mineral identification chart   Mineral Identification Chart Printable mineral ID chart by Art Crossman in MS Excel format.
google earth map of plate tectonics Zoom in on Plate Boundaries! Explore them with Google maps.
  Reference
Maps of over 250 states, countries and provinces   Reference Maps:
  Country Maps
  United States Maps
  Canada Maps
  State Satellite Images
  US City Satellite Images
geology dictionary   Geology Dictionary:
Look up definitions in our free geology dictionary. Hundreds of geology term definitions at your fingertips.
geologic time scale   Geologic Time Scale: Printable time scale in MS Word format for teacher or student use.
  Rock Photo Collections
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Rock Photo Galleries:  Igneous Rocks, Metamorphic Rocks, Sedimentary Rocks.
  Geologist Information
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Philippines
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U.S.A
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  Interesting
uses of gold The Many Uses of Gold: Learn how the unique properties of gold make it extremely suited for a large number of industrial uses.
Galaxy collisions Galaxies in Collision: Galaxies are not static places. Instead they are dynamic and explosive.
gemstones from the U.S. United States Gemstones: What states produce the most gems?
Sahara Desert satellite image Sahara Desert Satellite Images: Zoom in on pyramids, craters, volcanoes, dunes, Timbuktu.
Denver gem and mineral show Denver Gem and Mineral Show: Photo report by Geoffrey Notkin.
uses of granite Uses of Granite: The rock used for everything from kitchen counters to street curbing to the facing stone of skyscrapers.
pictures of the universe Pictures of the Universe: Views of the most interesting objects in our universe by NASA.
homeowners policy Homeowners Insurance: The typical homeowners policy does't cover natural hazards. It is simply a fire and liability policy.
map of the arctic Who Owns the Arctic? USGS estimates that 25% of all new oil & gas will be found in the Arctic.
expansive soil Expansive Soil: Causes more damage than earthquakes, floods, hurricanes & tornadoes combined.
Geology underlies it all.

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