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What is a Maar?What is a Maar? What is a Maar? The second most common volcanic landscape feature on Earth. Fire OpalFire Opal Fire Opal is a transparent to translucent opal with a yellow, orange or red background color. Expansive SoilExpansive Soil Expansive Soil Causes more damage than floods, hurricanes & tornadoes combined.
Salt DomesSalt Domes Salt Domes - Salt structures that are often associated with oil and natural gas. RocksRocks Rocks - Galleries of igneous, sedimentary and metamorphic rock photos with descriptions. Olivine Rain?Olivine Rain? Olivine Rain? Spitzer Telescope discovered a rain of olivine crystals on protostar HOPS-68.
Tallest MountainTallest Mountain Tallest Mountain - Everest has rivals in tallness, altitude and distance to the center of Earth. UV Mineral LampUV Mineral Lamp Portable UV Lamp Short and long wave for fluorescent mineral studies. Safety glasses included. What Is The Moho?What Is The Moho? What Is The Moho? Learn about the Mohorovicic Discontinuity - the mantle/crust boundary.
Chatoyant GemsChatoyant Gems Chatoyant Gems look like the eye of a cat. A line of light moves across the surface of the stone. Crushed StoneCrushed Stone Crushed Stone - About four tons per person is used each year in the United States. Horizontal DrillingHorizontal Drilling Horizontal Drilling has opened new resources and significantly improved productivity.
What is a Geyser?What is a Geyser? Photos of Geysers from around the world with information about height, eruption interval, more. Types Of EruptionsTypes Of Eruptions Types of Volcanic Eruptions - A description of the most common eruption types. HematiteHematite on Mars Hematite - The most important ore of iron. A source of mineral pigment since prehistory.
Largest VolcanoesLargest Volcanoes Largest Volcano - That title is shared by Tamu Massif, Mauna Kea and Ojos del Salado. Frac SandFrac Sand Frac Sand - The amount of frac sand produced in the USA is up by over 300% since 2009. MineralsMinerals Minerals - Descriptions, photos, articles, properties and uses for common minerals.
Uses of MarbleUses of Marble The Uses of Marble are numerous and diverse. You will be surprised by how it is used. Mineral HardnessMohs Hardness Test Mohs Hardness Scale is a set of reference minerals used for classroom hardness testing. What is LNG?What is LNG? What is LNG? The use of LNG as an energy source is growing rapidly. Learn more about LNG.
Rock ArtRock Art Rock Art - People have been marking on rocks for thousands of years. MisconceptionDiamonds from Coal Diamond Misconception - Lots of people think that diamonds form from coal. Not True! What is Geology?What is Geology? What is Geology? - The study of Earth materials, structures, processes and life over time.
Rock GlaciersRock Glaciers Rock Glaciers - Masses of rock, ice, snow, mud and water that slowly flow down slope. Quartzitequartzite Quartzite is metamorphic rock formed when sandstone is subjected to heat and pressure. Geology StoreGeology Tools Geology Tools - Rock hammers, field bags, hand lenses, maps, hardness picks, gold pans.
AmetrineAmetrine Ametrine is a bicolor quartz (amethyst + citrine) and a gemstone of growing popularity. San Andreas Fault MapSan Andreas Fault Map Google Map of the San Andreas Fault Zoom in to see the fault trace on satellite images. EmeraldEmerald Emerald is the most popular green gemstone in the United States and most of the world.
VolcanoesVolcanoes Volcanoes - Articles about volcanoes, volcanic hazards and eruptions past and present. The Brewery Rock ?diatomite The Rock Used to Make Beer - Geologists are beer experts and should know about this rock. Crater of DiamondsCrater of Diamonds Crater of Diamonds - The only diamond mine in the world where you can be the miner.
What Is Earth Science?What Is Earth Science? What Is Earth Science? The study of Earth and its neighbors in space. Learn more! Dallol VolcanoDallol Volcano Dallol Volcano is one of the strangest landscapes on earth - at 269 feet below sea level. Uses of GoldUses of Gold The Many Uses of Gold - Unique properties make gold one of the most useful metals.
Sea Level Rise MapsSea Level Rise Maps Sea Level Rise Maps - See what will be flooded as sea level rises. Google Earth - FreeDownload Google Earth Free Free Google Earth software allows you to browse seamless world satellite images. Free. Sliding RocksSliding Rocks Sliding Rocks Mystery - What causes these rocks to slide across a playa in Death Valley?
Teacher ResourcesTeacher Resources Teacher Resources - K-12 resources for teaching about earth science. Rare Earth ElementsRare Earth Elements Rare Earths - Special materials used in electronics, defense, medical & many other products. GemstonesGemstones Gemstones - Colorful images and articles about diamonds and colored stones.
Homeowners InsuranceHomeowners Insurance Homeowners Insurance usually does not cover the most common geologic hazards. What are Glaciers?What are Glaciers? What are Glaciers? Learn how glaciers form, flow, advance, retreat, and change over time. The Acid TestThe Acid Test The Acid Test - Geologists use dilute hydrochloric acid to identify carbonate minerals.
DiamondsDiamonds Diamonds - Learn about the properties of diamond, its many uses and diamond discoveries. MeteoritesMeteorites Meteorites - Rocks that were once parts of planets or large asteroids. United States Wall MapsWall Maps Wall Maps - Shaded relief wall maps of U.S. States. Great for your office or classroom.
Tanzanitetanzanite Tanzanite was unknown until a few decades ago but it has erupted into wide popularity. Oil and GasOil and Gas Oil and Gas - Articles about oil and natural gas in the US and around the world. ObsidianObsidian Obsidian - the volcanic rock that cools so quickly that it becomes a natural glass.
AmmoliteAmmolite Ammolite is a fossil and a gemstone. It is shell material from fossil ammonites. Asteroid Impact MapAsteroid Impact Map Asteroid Impact Map - Explore fifty of the most obvious asteroid impact craters on Earth. US Diamond MinesUS Diamond Mines US Diamond Mines - Did you know that diamonds have been mined in the United States?
Rocks on MarsRocks on Mars Rocks on Mars - Many of the rocks found on Mars are not very different from Earth rocks. Bear AttacksBear Attacks Bear Attacks - Knowing how to react to a bear encounter or attack could save your life. Great Rift ValleyGreat Rift Valley The East Africa Rift System - The extensive fault system that is tearing Africa apart.
AstronomyAstronomy Astronomy - Fantastic images and articles about solar system and deep-space astronomy. Petrified WoodPetrified Wood Petrified Wood is a fossil that forms when dissolved material preciptates and replaces wood. Azurite GraniteK2 Granite Azurite Granite ? A white granite with blue orbs of azurite. A new material from Pakistan.
OpalsOpal Pictures of Opal - A collection of different types of opal from all around the world and Mars too! LabradoriteLabradorite Labradorite is a feldspar mineral that sometimes exhibits an iridescent play-of-colors Land Below Sea LevelLand Below Sea Level Land Below Sea Level - Did you know that dozens of land locations are below sea level?
100+ Gemstonescolored stones 100+ Gems - Photos of over 100 beautiful gems ranging from the popular to the obscure. Identifying MeteoritesMeteorite Identification Meteorite Identification Step one in identifying a possible meteorite is the magnet test. IoliteIolite Iolite is the gem variety of the mineral cordierite. An alternative to sapphire and tanzanite.
FossilsFossils Fossils - Learn about fossils and discoveries around the world. San Andreas FaultSan Andreas Fault The San Andreas Fault - A feature that separates the Pacific and North American Plates. Mount VesuviusMount Vesuvius Mount Vesuvius - geology, history, maps, facts and more about the Vesuvius eruptions.
Gems from SpaceGems from Space Extraterrestrial Gems - A number of materials from space are used as attractive gems. TurquoiseTurquoise Turquoise - A bluish-green gem material that has been used for over 6000 years. Lightning Strikes MapLightning Strikes Map Lightning Strikes Map - A NASA map showing the worldwide distribution of lightning activity.
Cave of the HandsCave of the Hands Cave of the Hands is a cave where ancient people painted hands about 9000 years ago. Plate TectonicsPlate Tectonics Plate Tectonics - Articles, maps, information about plate tectonics and the interior of Earth. Ruby and Sapphireruby and sapphire Ruby and Sapphire are the 2nd and 3rd most popular colored stones in the United States.
Dowsingdowsing Dowsing is a method used to find underground water that is rejected by most geologists. Fluorescent MineralsFluorescent Minerals Fluorescent Minerals and rocks glow with spectacular colors under ultraviolet light. Watch out for Ticks!ticks Ticks are a problem for geologists in some areas. Learn to recognize and avoid them.
Volcanic ExplosivityVolcanic Explosivity Volcanic Explosivity - Rating volcanic eruptions based upon the volume of tephra ejected. Coal Close UpCoal through a microscope Coal Through a Microscope - Coal is more than a black rock. It is THE most interesting rock. Hydraulic FracturingHydraulic Fracturing Hydraulic Fracturing - Increases well yield by fracturing the reservoir rock with fluid injection.
Facts About CopperCopper Facts About Copper - Information about copper uses, production, resources and more. GraniteGranite Granite - The intrusive igneous rock that underlies continents and countertops. Tallest TsunamiTallest Tsunami Tallest Tsunami - A wave with a run-up height of 1720 feet occurred in Lituya Bay, Alaska.
SoapstoneSoapstone Soapstone is a metamorphic rock with properties that make it suitable for a variety of projects. Earthquake MapsCalifornia Earthquake Maps California Earthquake Maps A collection of isoseismal maps for earthquakes in California. Largest EarthquakeLargest Earthquake Largest Earthquake ever recorded - Magnitude 9.5. Chile, 1960.
SunstoneSunstone Sunstone is a gem feldspar with aventurescence caused by light reflecting from platy inclusions. CorundumCorundum Corundum is the third hardest mineral. It is also the mineral of ruby and sapphire. Lapis LazuliLapis Lazuli Lapis Lazuli - a metamorphic rock and the most popular blue opaque gemstone in history.
Life on Europa ?Life on Europa Life on Europa might exist in a salty ocean a short distance below its frozen surface. Oil Fields from Spacenatural gas flaring Oil Fields from Space - Night views of Earth show the distribution of oil field activity. ShaleShale Shale - The rock that has quickly transformed the oil and gas industry.
MineraloidsMineraloids Mineraloids are amorphous naturally-occurring inorganic solids that lack crystallinity. SandSand Sand is a diverse material. This gallery includes photos of sand from around the world. Largest DesertLargest Desert Largest Desert - The Sahara is huge but two polar deserts are larger.
Mount ClevelandMount Cleveland Mount Cleveland is an active volcano in the Aleutian Islands and a threat to air traffic. Methane HydrateMethane Hydrate Methane Hydrate deposits contain more fuel value than all other fossil fuels combined. Titan SubmarineTitan Submarine Exploring a Hydrocarbon Sea on Titan with a submarine is a potential NASA mission.
Arctic Seafloor MapArctic Ocean Seafloor Map Arctic Ocean Seafloor Map The ridges, basins, shelves and rifts defining the Arctic seafloor. Volcanoes in SpaceExtraterrestrial Volcanoes Extraterrestrial Volcanoes - Earth is not the only solar system body with volcanoes. Huge Diamond DepositPopigai Diamonds The Largest Diamond Deposit in the world could be under Popigai Crater in Russia.
USA Landslide MapLandslides Landslide Incidence Map - A USGS map showing landslide incidence in the United States. Fee Mining SitesFee Mining Fee Mining sites are mines that you can enter, pay a fee, and keep anything that you find. Find Minerals & GemsFee Mining Find Minerals and Gems - Dozens of sites where you can dig and keep what you find.
Mount EtnaMount Etna Mount Etna - The most active volcano in Europe continues an eruption that started in 2001. GarnetGarnet Garnet is best known as a red gemstone. It occurs in any color and has many industrial uses. Yosemite GlaciersYosemite Glaciers Yosemite Glaciers There are two active glaciers in Yosemite - but they are slowly melting away.
PeridotiteKimberlite The Host Rock of Diamonds - Diamonds are found in Kimberlite, a variety of peridotite. RhodoniteRhodonite Rhodonite - a manganese silicate used as a minor ore of manganese and as a gemstone. PeridotitePeridotite Peridotite is a chromite host rock, a source of diamonds and a possible carbon dioxide sink.
Wrong Volcano!Novarupta Wrong Volcano! The most powerful eruption of the 20th century was misidentified? Blue FlamesBlue Flames Blue Flames and the largest highly acidic lake in the world at Kawah Ijen Volcano. Rock KitsRock Kits Rock Kits for classroom and personal study. A great way to learn about rocks.
Gem SilicaGem Silica Gem Silica is a blue chalcedony colored by copper. It is the rarest and most valuable chalcedony. Mineral RightsMineral Rights Mineral Rights Who owns the minerals under your land? Who wants to buy them? RhodochrositeRhodochrosite Rhodochrosite a manganese mineral used as an ore, a pink gem and an ornamental stone.
Antarctic Meteoriteshunting meteorites in Antarctica The Richest Meteorite Field - More meteorites found here than anywhere else on Earth. BerylBeryl Beryl is the gem mineral of emerald, aquamarine, morganite, red beryl, heliodor and more. RhyoliteRhyolite Rhyolite An extrusive igneous rock with a high silica content, produced from granitic magma.
Geology in the News
M7.6 Earthquake at Brazil-Peru Border
November 25 | United States Geological Survey
The Pulsing Aurora of Jupiter
November 25 | EOS Earth and Space Science News
New Reactive Barrier May Protect Groundwater from Mine Waste
November 25 | EOS Earth and Space Science News
The Complicated World of Tropical Convection
November 25 | EOS Earth and Space Science News
Gemfields Gets Great Auction Results
November 25 |
Climate Can Grind Down Mountains Faster Than They Can Rebuild
November 25 | National Science Foundation
NEON Begins to Monitor Changing Ecology of the United States
November 25 | National Science Foundation
U.S. Crude Oil and Natural Gas Proved Reserves Are Up Sharply
November 24 | Energy Information Administration
Scientists Are Mapping the World's Largest Volcano
November 24 | National Geographic
In 40 Million Years, Mars May Have a Ring
November 24 | Los Angeles Times
Massive Ice Cloud on Titan Suggests Five More Years of Winter
November 23 | Christian Science Monitor
U.S. Energy-Related Carbon Dioxide Emissions, 2014
November 23 | Energy Information Administration
Landslide Near Jade Mine in Myanmar Kills About 100
November 23 | The New York Times
Iran Sweats the OPEC Cap Decision
November 23 | Bloomberg Business
OPEC Targets U.S. Shale, But Hits Canada Instead
November 23 | Bloomberg Business
Bronx, NY Students are Excited About Geodes
November 21 |
Libya Oil and Gas Report
November 20 | Energy Information Administration
Australian Liquefaction Capacity Continues to Expand
November 20 | Energy Information Administration
Politics and NASA Funding
November 19 | ars technica
USGS Releases Updated Topo Maps for Illinois and South Dakota
November 19 | United States Geological Survey
What is LNG ?
November 19 |
Where is the Chukchi Sea?
November 18 |
China and USA: CO2 Emission History Graphs and Emissions Policy
November 18 | Energy Information Administration
What Was on the T. Rex Menu? Sometimes Each Other
November 18 | National Geographic
Volcanic Activity Worldwide November 17, 2015
November 18 | Volcano Discovery
How the Amazon Became a Crucible of Life
November 18 |
How Many Trees Are There On Earth
November 17 | SciNews
New Classification of Natural Gas Storage Regions
November 17 | Energy Information Administration
M6.5 Earthquake in the Ionian Sea Off the Eastern Coast of Greece
November 17 | United States Geological Survey
Video: The Samarco Dam Failure
November 17 | The Landslide Blog
Mexico: Colima Volcano Keeps Erupting
November 17 | The Washington Post
Earthquakes Threaten Arizona (and that's not all)
November 16 | The Arizona Republic
M5.8 Earthquake Near the Cayman Trench
November 16 | United States Geological Survey
5,400-Mile-Per-Hour Winds on a Distant Planet
November 15 | United Press International
A U.S. Crude Imports Fall, Crude Imported from Canada Increases
November 15 | Energy Information Administration
How Bat Breath and Guano Can Change the Shapes of Caves
November 15 | EOS Earth and Space Science News
An Asteroid With Rings
November 14 | NASA
Fun Videos: Mars in a Minute
November 14 | NASA
Drought Changes How Peat Bogs Cycle Mercury and Sulfur
November 14 | EOS Earth and Space Science News
Better Forecasting for the Next Volcanic Eruption
November 14 | EOS Earth and Space Science News
Cyanobacteria Assessment Network
November 14 | EOS Earth and Space Science News
Sapphire Mines at Ilakaka, Madagascar
November 14 | Gemological Institute of America
Space Crashes Into the Indian Ocean
November 14 | ABC News
Video: Monitoring Bay Area Landslides
November 13 |
What is the Utica Shale?
November 13 |
Visit Emerald Mines in Zambia
November 13 | Gemological Institute of America
Black Hole Has Major Flare
November 12 | NASA
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