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RocksRocks Rocks - Galleries of igneous, sedimentary and metamorphic rock photos with descriptions. Rock TumblersRock Tumblers Rock Tumblers - All about rock tumblers and rock tumbling. Read before you buy a tumbler. Types Of EruptionsTypes Of Eruptions Types of Volcanic Eruptions - A description of the most common eruption types.
Ruby and Sapphireruby and sapphire Ruby and Sapphire are the 2nd and 3rd most popular colored stones in the United States. Google Earth - FreeDownload Google Earth Free Free Google Earth software allows you to browse seamless world satellite images. Free. Geology ToolsGeology Tools Geology Tools Rock hammers, field bags, hand lenses, maps, hardness picks, gold pans.
Rare Earth ElementsRare Earth Elements Rare Earths - Special materials used in electronics, defense, medical & many other products. RhodochrositeRhodochrosite Rhodochrosite - a manganese mineral used as an ore, a pink gem and an ornamental stone. ZirconZircon Zircon is the primary ore of zirconium and a gemstone that is available in many colors.
San Andreas FaultSan Andreas Fault The San Andreas Fault - A feature that separates the Pacific and North American Plates. RhodoniteRhodonite Rhodonite - a manganese silicate used as a minor ore of manganese and as a gemstone. Ant Hill GarnetsAnt Hill Garnets Ant Hill Garnets - tiny gems that ants haul to the surface and discard on their anthill. Honest!
Asteroid Impact MapAsteroid Impact Map Asteroid Impact Map - Explore fifty of the most obvious asteroid impact craters on Earth. The Brewery Rock ?diatomite The Rock Used to Make Beer - Geologists are beer experts and should know about this rock. GemstonesGemstones Gemstones - Colorful images and articles about diamonds and colored stones.
Wall MapsWall Maps Wall Maps - Wall maps of the world, continents, states and the USA. Homeowners InsuranceHomeowners Insurance Homeowners Insurance usually does not cover the most common geologic hazards. MineraloidsMineraloids Mineraloids are amorphous naturally-occurring inorganic solids that lack crystallinity.
Field CoursesField Camps Field Courses - Over 80 field courses for undergraduate geology students. Teacher ResourcesTeacher Resources Teacher Resources - K-12 resources for teaching about earth science. Quartzitequartzite Quartzite is metamorphic rock formed when sandstone is subjected to heat and pressure.
Largest VolcanoesLargest Volcanoes Largest Volcano - That title is shared by Tamu Massif, Mauna Kea and Ojos del Salado. Red BerylRed Beryl Red Beryl is one of the rarest gems. Small amounts are mined at one locality in Utah. SoapstoneSoapstone Soapstone is a metamorphic rock with properties that make it suitable for a variety of projects.
Bear AttacksBear Attacks Bear Attacks - Knowing how to react to a bear encounter or attack could save your life. Azurite GraniteK2 Granite Azurite Granite ? A white granite with blue orbs of azurite. A new material from Pakistan. Geology of GemsGeology of Gems Geology of Gems - The first comprehensive book on the geology of gem deposits.
Land Below Sea LevelLand Below Sea Level Land Below Sea Level - Did you know that dozens of land locations are below sea level? Horizontal DrillingHorizontal Drilling Horizontal Drilling has opened new resources and significantly improved productivity. Oil Fields from Spacenatural gas flaring Oil Fields from Space - Night views of Earth show the distribution of oil field activity.
Arctic Seafloor MapArctic Ocean Seafloor Map Arctic Ocean Seafloor Map The ridges, basins, shelves and rifts defining the Arctic seafloor. Coal Close UpCoal through a microscope Coal Through a Microscope - Coal is more than a black rock. It is THE most interesting rock. Chatoyant GemsChatoyant Gems Chatoyant Gems look like the eye of a cat. A line of light moves across the surface of the stone.
Antarctic Meteoriteshunting meteorites in Antarctica The Richest Meteorite Field - More meteorites found here than anywhere else on Earth. MisconceptionDiamonds from Coal Diamond Misconception - Many people think that diamonds form from coal. Not True! Tanzanitetanzanite Tanzanite was unknown until a few decades ago but it has erupted into wide popularity.
Canadian DiamondsCanadian Diamonds Canada is one of the world*s leading producers of gem-quality diamonds. Sea Level Rise MapsSea Level Rise Maps Sea Level Rise Maps - See what will be flooded as sea level rises. Mount ClevelandMount Cleveland Mount Cleveland is an active volcano in the Aleutian Islands and a threat to air traffic.
What is a Maar?What is a Maar? What is a Maar? The second most common volcanic landscape feature on Earth. Frac SandFrac Sand Frac Sand - A specialty sand used to maintain porosity in hydraulic fracturing. Kyanitekyanite Kyanite is a metamorphic mineral used to make porcelain, abrasive products and gems.
Facts About CopperCopper Facts About Copper - Information about copper uses, production, resources and more. RhyoliteRhyolite Rhyolite An extrusive igneous rock with a high silica content, produced from granitic magma. San Andreas Fault MapSan Andreas Fault Map Google Map of the San Andreas Fault Zoom in to see the fault trace on satellite images.
What is a Geyser?What is a Geyser? What is a Geyser? Photos and information about geysers in many parts of the world. What are Glaciers?What are Glaciers? What are Glaciers? Learn how glaciers form, flow, advance, retreat, and change over time. Geology of Heliumhelium Helium is a byproduct of the natural gas industry. Its most important use is in MRI.
Cave of the HandsCave of the Hands Cave of the Hands is a cave where ancient people painted hands about 9000 years ago. SandSand Sand is a diverse material. This gallery includes photos of sand from around the world. Hydraulic FracturingHydraulic Fracturing Hydraulic fracturing increases well yield by fracturing the reservoir rock with fluid injection.
DiamondsDiamonds Diamonds - Learn about the properties of diamond, its many uses and diamond discoveries. Dowsingdowsing Dowsing is a method used to find underground water that is rejected by most geologists. TurquoiseTurquoise Turquoise - A bluish-green gem material that has been used for over 6000 years.
Volcanic ExplosivityVolcanic Explosivity Volcanic Explosivity - Rating volcanic eruptions based upon the volume of tephra ejected. ShaleShale Shale - The rock that has quickly transformed the oil and gas industry. Fluorescent MineralsFluorescent Minerals Fluorescent Minerals and rocks glow with spectacular colors under ultraviolet light.
LabradoriteLabradorite Labradorite is a feldspar mineral that sometimes exhibits an iridescent play-of-colors Salt DomesSalt Domes Salt Domes - Salt structures that are often associated with oil and natural gas accumulations. What is Geology?What is Geology? What is Geology? - The study of Earth materials, structures, processes and life over time.
US Diamond MinesUS Diamond Mines US Diamond Mines - Did you know that diamonds have been mined in the United States? Expansive SoilExpansive Soil Expansive Soil Causes more damage than floods, hurricanes & tornadoes combined. Earthquake MapsCalifornia Earthquake Maps California Earthquake Maps A collection of isoseismal maps for earthquakes in California.
100+ Gemstonescolored stones 100+ Gems - Photos of over 100 beautiful gems ranging from the popular to the obscure. Great Rift ValleyGreat Rift Valley The East Africa Rift System - The extensive fault system that is tearing Africa apart. HematiteHematite on Mars Hematite - The most important ore of iron. A source of mineral pigment since prehistory.
Eagle Ford ShaleEagle Ford Shale Eagle Ford Shale - One of the most prolific oil and gas producers in the United States. Tallest TsunamiTallest Tsunami Tallest Tsunami - A wave with a run-up height of 1720 feet occurred in Lituya Bay, Alaska. ObsidianObsidian Obsidian - the volcanic rock that cools so quickly that it becomes a natural glass.
Lightning Strikes MapLightning Strikes Map Lightning Strikes Map by NASA shows the worldwide distribution of lightning activity. Lapis LazuliLapis Lazuli Lapis Lazuli - a metamorphic rock and the most popular blue opaque gemstone in history. Blue FlamesBlue Flames Blue Flames and the largest highly acidic lake in the world at Kawah Ijen Volcano.
What Is Earth Science?What Is Earth Science? What Is Earth Science? The study of Earth and its neighbors in space. Learn more! Deepest LakeDeepest Lake in the World Deepest Lake in the World Lake Baikal in southern Russia is the deepest lake in the World. CorundumCorundum Corundum is the third hardest mineral. It is also the mineral of ruby and sapphire.
What Is The Moho?What Is The Moho? What Is The Moho? The Mohorovicic Discontinuity is the mantle/crust boundary. EmeraldEmerald Emerald is the most popular green gemstone in the United States and most of the world. MeteoritesMeteorites Meteorites - Rocks that were once parts of planets or large asteroids.
Sliding RocksSliding Rocks Sliding Rocks Mystery - What causes these rocks to slide across a playa in Death Valley? Crater of DiamondsCrater of Diamonds Crater of Diamonds - The only diamond mine in the world where you can be the miner. USA Landslide MapLandslides Landslide Incidence Map - A USGS map showing landslide incidence in the United States.
Gems from SpaceGems from Space Extraterrestrial Gems - A number of materials from space are used as attractive gems. What Are Minerals?What Are Minerals? Minerals are the building blocks of our society. We use items made with them every day. Hardness Pickshardness picks Hardness Picks - Mohs hardness testing with precise and easy-to-use hardness picks.
AzuriteAzurite Azurite - Used as an ore of copper, a pigment, ornamental stone and gem material. GraniteGranite Granite - The intrusive igneous rock that underlies continents and countertops. Rock ArtRock Art Rock Art - People have been marking on rocks for thousands of years.
PeridotitePeridotite Peridotite is a chromite host rock, a source of diamonds and a possible carbon dioxide sink. Rock KitsRock Kits Rock Kits for classroom and personal study. A great way to learn about rocks. What is LNG?What is LNG? What is LNG? The use of LNG as an energy source is growing rapidly. Learn more about LNG.
Petrified WoodPetrified Wood Petrified Wood is a fossil that forms when dissolved material preciptates and replaces wood. Mount EtnaMount Etna Mount Etna - The most active volcano in Europe continues an eruption that started in 2001. Watch out for Ticks!ticks Ticks are a problem for geologists in some areas. Learn to recognize and avoid them.
GarnetGarnet Garnet is best known as a red gemstone. It occurs in any color and has many industrial uses. Mineral HardnessMohs Hardness Test Mohs Hardness Scale is a set of reference minerals used for classroom hardness testing. Record LightningLake Maracaibo Lightning World Record Lightning - this lake has more lightning than any other place in the world.
Crushed StoneCrushed Stone Crushed Stone - About four tons per person is used each year in the United States. ChalcopyriteChalcopyrite Chalcopyrite - The most important ore of copper for over five thousand years. Gold PansGold Pans Gold Pans and Panning Kits - classifiers, snuffer bottles. Pans sized for kids to Goliath.
The Acid TestThe Acid Test The Acid Test - Geologists use dilute hydrochloric acid to identify carbonate minerals. SunstoneSunstone Sunstone - A gem feldspar with aventurescence caused by light reflecting from platy inclusions. Gem SilicaGem Silica Gem Silica is a blue chalcedony colored by copper. It is the rarest and most valuable chalcedony.
Tallest MountainTallest Mountain Tallest Mountain - Everest has rivals in tallness, altitude and distance to the center of Earth. VolcanoesVolcanoes Volcanoes - Articles about volcanoes, volcanic hazards and eruptions past and present. Uses of GoldUses of Gold The Many Uses of Gold - Unique properties make gold one of the most useful metals.
Rocks on MarsRocks on Mars Rocks on Mars - Many of the rocks found on Mars are not very different from Earth rocks. Hand LensHand Lens Hand Lens A 10-power folding magnifier in a metal case. A frequently used lab and field tool. Mount VesuviusMount Vesuvius Mount Vesuvius - geology, history, maps, facts and more about the Vesuvius eruptions.
Utica Well DensityUtica wells Utica Well Density A surprising density of horizontal wells in the Utica Shale of Ohio. Fire OpalFire Opal Fire Opal is a transparent to translucent opal with a yellow, orange or red background color. Bear MapBear Map Range of Bear Species - Where you might encounter different types of bears.
Methane HydrateMethane Hydrate Methane Hydrate deposits contain more fuel value than all other fossil fuels combined. Mineral RightsMineral Rights Mineral Rights Who owns the minerals under your land? Who wants to buy them? Huge Diamond DepositPopigai Diamonds The Largest Diamond Deposit in the world could be under Popigai Crater in Russia.
UV Mineral LampUV Mineral Lamp Portable UV Lamp - Short and long wave UV for fluorescent mineral viewing. TourmalineTourmaline Tourmaline - the most colorful mineral and natural gem material on Earth. Uses of MarbleUses of Marble The Uses of Marble are numerous and diverse. You will be surprised by how it is used.
Pavlof VolcanoPavlof Volcano Pavlof Volcano - one of the most active volcanoes in North America and threat to air traffic. Diamond ProducersDiamond Production Diamond Production leaders include: Botswana, Russia, Angola and Canada. June 6, 1912Novarupta June 6, 1912 - The most powerful volcanic eruption of the 20th century.
OpalsOpal Pictures of Opal - A collection of different types of opal from all around the world and Mars too! FossilsFossils Fossils - Learn about fossils and discoveries around the world. Plate TectonicsPlate Tectonics Plate Tectonics - Articles and maps about plate tectonics and the interior of Earth.
Oil and GasOil and Gas Oil and Gas - Articles about oil and natural gas in the US and around the world. Largest EarthquakeLargest Earthquake Largest Earthquake ever recorded - Magnitude 9.5. Chile, 1960. Fee Mining SitesFee Mining Fee Mining sites are mines that you can enter, pay a fee, and keep anything that you find.
     
Geology in the News
Spectacular Rubies from Madagascar
December 2 | LotusGemology
First U.S. Offshore Wind Farm Comes Online
December 2 | Energy Information Administration
World*s Largest Cluster of Sinkholes Discovered
December 2 | National Geographic
Earthquake Triggers Collapse at Mine in Poland
December 2 | United Press International
Marine Fuel Sulfur Hit Refiners and Vessel Operators
December 2 | Energy Information Administration
Science Is Bipartisan Issue, White House Science Adviser Says
December 2 | EOS Earth and Space Science News
A Significantly Hotter Mantle Beneath Iceland
December 2 | EOS Earth and Space Science News
Disrupting the Diamond Trade
December 2 | MorganStanley.com
M6.3 Earthquake Near Lake Titicaca, Peru
December 2 | United States Geological Survey
Unseasonably Warm Weather Kills U.S. Heating Demand
December 2 | Energy Information Administration
30-Year Marine Corps Veteran Now a Field Gemologist
December 1 | Gemological Institute of America
Texas Shale Is Big Winner in OPEC Agreement
December 1 | Bloomberg Business
Border-Crossing Pipelines Deliver U.S. Shale Gas to Mexico
December 1 | Energy Information Administration
Where is the Barents Shelf?
December 1 | Geology.com
Rising Demand and Prices for Frac Sand
December 1 | Bloomberg Business
What is Frac Sand?
December 1 | Geology.com
Layoffs at Diavik Diamond Mine
December 1 | CBC News
How Space Travel Can Damage Your Eyes
November 30 | The Washington Post
Life Thrives Under Ice-Covered Lakes
November 30 | LiveScience
How a Tennessee Wildfire Spread So Fast
November 30 | LiveScience
Rubies Reportedly from Pokot, Kenya
November 30 | Gemological Institute of America
Update on Colored Gemstone Mining in Tanzania
November 30 | Gemological Institute of America
Gatlinburg Fire from Space
November 29 | NASA Earth Observatory
Wildfires Force Thousands to Evacuate in Tennessee
November 29 | National Public Radio
Amount of Natural Gas in Storage at a New Record High
November 29 | Energy Information Administration
U.S. Natural Gas Exports to Mexico Are Growing
November 29 | Energy Information Administration
West Antarctic Ice Shelf Breaking Up from the Inside Out
November 29 | The Ohio State University
What is Astrobiology?
November 29 | NASA
400 Miles of Damage at the Great Barrier Reef
November 29 | The Washington Post
Largest Ever U.S. Shale Oil Deposit Identified in Texas
November 29 | EOS Earth and Space Science News
Next Generation of U.S. Weather Satellites Hits the Sky
November 29 | EOS Earth and Space Science News
Satellite Image: Rare November Snow in Tokyo
November 28 | NASA Earth Observatory
China to Receive Its 2nd Shipment of U.S. Shale Gas
November 28 | Bloomberg Business
A Name Directory for the Ocean Floor
November 28 | EOS Earth and Space Science News
Arctic Ocean Seafloor Features Map
November 28 | Geology.com
Where is Baffin Island?
November 27 | Geology.com
Japan Earthquakes and the Ring of Fire
November 26 | The Washington Post
Trapiche Rhodochrosite
November 26 | Gemological Institute of America
What is Rhodochrosite?
November 26 | Geology.com
Observations on CVD - Grown Synthetic Diamonds
November 26 | Gemological Institute of America
M6.5 Earthquake - Remote Western China
November 25 | United States Geological Survey
Recent Advances in Understanding the Geology of Diamonds
November 25 | Gemological Institute of America
Pennsylvania Map of Underground Mining Areas
November 25 | Pennsylvania Department of Environmental Protection
Tracing the North Atlantic*s Bottom Waters
November 25 | EOS Earth and Space Science News
What Are Rare Earth Elements?
November 24 | Geology.com
A Proposal to Dismantle NASA Climate Research?
November 24 | The Washington Post
Looking for Life on Mars -- In Chile
November 24 | Arizona State University
Video: Seeking Sky Blue Spinel From Vietnam Carbonates
November 24 | Gemological Institute of America
Ash Plume Over Copahue Volcano
November 23 | NASA Earth Observatory
The Dead Sea is Getting Saltier and Shallower
November 23 | The Christian Science Monitor
Hurricane Otto Track Map
November 23 | National Hurricane Center
Otto Now A Category 1 Hurricane
November 23 | The Weather Channel
How Did Climate and Humans Respond to Past Volcanic Eruptions?
November 23 | EOS Earth and Space Science News
Where is the Utica Shale?
November 23 | Geology.com
The Geostationary Coastal and Air Pollution Events Satellite Mission
November 23 | EOS Earth and Space Science News
Trying to Explain Island Uplift in the Azores
November 23 | EOS Earth and Space Science News
Reactions to Trump Environment Plans: From Defiance to Welcome
November 22 | EOS Earth and Space Science News
A Wetter Climate Increases Methane Production in Peat
November 22 | EOS Earth and Space Science News
First Batch of Quebec Diamonds Go to Auction
November 22 | The Globe and Mail
Diamonds in Canada
November 22 | Geology.com
Where, and When, Will the Next Volcano Erupt?
November 22 | National Geographic
M6.9 Earthquake - Eastern Japan
November 21 | United States Geological Survey
How Trump, Shale Oil Can Disrupt OPEC*s Plans
November 21 | Bloomberg Business
What Are Brown Diamonds?
November 21 | Geology.com
U.S. Oil Drillers Coming Back to Life
November 21 | Bloomberg Business
North Pole is 36 Degrees Warmer than Normal
November 20 | The Washington Post
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