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News and Information About Geology and Earth Science

Life on Europa ?Life on Europa Life on Europa might exist in a salty ocean a short distance below its frozen surface. PeridotiteKimberlite The Host Rock of Diamonds - Diamonds are found in Kimberlite, a variety of peridotite. Mount VesuviusMount Vesuvius Mount Vesuvius - geology, history, maps, facts and more about the Vesuvius eruptions. SunstoneSunstone Sunstone is a gem feldspar with aventurescence caused by light reflecting from platy inclusions.
RocksRocks Rocks - Galleries of igneous, sedimentary and metamorphic rock photos with descriptions. DonorsChoose.orgDonorsChoose.org Help a Science Teacher - At DonorsChoose.org you can support a K-12 science project. Volcanic ExplosivityVolcanic Explosivity Volcanic Explosivity - Rating volcanic eruptions based upon the volume of tephra ejected. Geology.com NewsGeology News Geology.com News is updated several times each week. Read it here or receive email updates.
Lightning Strikes MapLightning Strikes Map Lightning Strikes Map - A NASA map showing the worldwide distribution of lightning activity. MineralsMinerals Minerals - Descriptions, photos, articles, properties and uses for common minerals. MineraloidsMineraloids Mineraloids are amorphous naturally-occurring inorganic solids that lack crystallinity. Identifying MeteoritesMeteorite Identification Meteorite Identification Step one in identifying a possible meteorite is the magnet test.
Lapis LazuliLapis Lazuli Lapis Lazuli - a metamorphic rock and the most popular blue opaque gemstone in history. Sea Level Rise MapsSea Level Rise Maps Sea Level Rise Maps - See what will be flooded as sea level rises. RhodoniteRhodonite Rhodonite - a manganese silicate used as a minor ore of manganese and as a gemstone. Bear AttacksBear Attacks Bear Attacks - Knowing how to react to a bear encounter or attack could save your life.
Fluorescent MineralsFluorescent Minerals Fluorescent Minerals and rocks glow with spectacular colors under ultraviolet light. DiamondsDiamonds Diamonds - Learn about the properties of diamond, its many uses and diamond discoveries. OpalsOpal Pictures of Opal - A collection of different types of opal from all around the world and Mars too! Watch out for Ticks!ticks Ticks are a problem for geologists in some areas. Learn to recognize and avoid them.
Crushed StoneCrushed Stone Crushed Stone - About four tons per person is used each year in the United States. Find Minerals & GemsFee Mining Find Minerals and Gems - Dozens of sites where you can dig and keep what you find. Oil and GasOil and Gas Oil and Gas - Articles about oil and natural gas in the US and around the world. GemstonesGemstones Gemstones - Colorful images and articles about diamonds and colored stones.
The Brewery Rock ?diatomite The Rock Used to Make Beer - Geologists are beer experts and should know about this rock. Dowsingdowsing Dowsing is a method used to find underground water that is rejected by most geologists. Methane HydrateMethane Hydrate Methane Hydrate deposits contain more fuel value than all other fossil fuels combined. Asteroid Impact MapAsteroid Impact Map Asteroid Impact Map - Explore fifty of the most obvious asteroid impact craters on Earth.
Homeowners InsuranceHomeowners Insurance Homeowners Insurance usually does not cover the most common geologic hazards. Plate TectonicsPlate Tectonics Plate Tectonics - Articles, maps, information about plate tectonics and the interior of Earth. Limonitelimonite Limonite - an amorphous iron oxide. Used as an ore of iron and as a pigment since prehistory. ObsidianObsidian Obsidian - the volcanic rock that cools so quickly that it becomes a natural glass.
Sliding RocksSliding Rocks Sliding Rocks Mystery - What causes these rocks to slide across a playa in Death Valley? Titan SubmarineTitan Submarine Exploring a Hydrocarbon Sea on Titan with a submarine is a potential NASA mission. VolcanoesVolcanoes Volcanoes - Articles about volcanoes, volcanic hazards and eruptions past and present. The Acid TestThe Acid Test The Acid Test - Geologists use dilute hydrochloric acid to identify carbonate minerals.
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. Chatoyant GemsChatoyant Gems Chatoyant Gems look like the eye of a cat. A line of light moves across the surface of the stone. Huge Diamond DepositPopigai Diamonds The Largest Diamond Deposit in the world could be under Popigai Crater in Russia.
Gems from SpaceGems from Space Extraterrestrial Gems - A number of materials from space are used as attractive gems. San Andreas FaultSan Andreas Fault The San Andreas Fault - A feature that separates the Pacific and North American Plates. Geologist Toolsgeologist tools Geologist Tools - Visit our store for a large selection of field and laboratory tools. Google Earth - FreeDownload Google Earth Free Free Google Earth software allows you to browse seamless world satellite images. Free.
Mineral HardnessMohs Hardness Test Mohs Hardness Scale is a set of reference minerals used for classroom hardness testing. Crater of DiamondsCrater of Diamonds Crater of Diamonds - The only diamond mine in the world where you can be the miner. FossilsFossils Fossils - Learn about fossils and discoveries around the world. AmmoliteAmmolite Ammolite is a fossil and a gemstone. It is shell material from fossil ammonites.
EmeraldEmerald Emerald is the most popular green gemstone in the United States and most of the world. LabradoriteLabradorite Labradorite is a feldspar mineral that sometimes exhibits an iridescent play-of-colors Ruby and Sapphireruby and sapphire Ruby and Sapphire are the 2nd and 3rd most popular colored stones in the United States. TurquoiseTurquoise Turquoise - A bluish-green gem material that has been used for over 6000 years.
Facts About CopperCopper Facts About Copper - Information about copper uses, production, resources and more. SandSand Sand is a diverse material. This gallery includes photos of sand from around the world. Tallest MountainTallest Mountain Tallest Mountain - Everest has rivals in tallness, altitude and distance to the center of Earth. Types Of EruptionsTypes Of Eruptions Types of Volcanic Eruptions - A description of the most common eruption types.
What Is Earth Science?What Is Earth Science? What Is Earth Science? The study of Earth and its neighbors in space. Learn more! What is a Geyser?What is a Geyser? Photos of Geysers from around the world with information about height, eruption interval, more. GarnetGarnet Garnet is best known as a red gemstone. It occurs in any color and has many industrial uses. Uses of GoldUses of Gold The Many Uses of Gold - Unique properties make gold one of the most useful metals.
Coal Close UpCoal through a microscope Coal Through a Microscope - Coal is more than a black rock. It is THE most interesting rock. Horizontal DrillingHorizontal Drilling Horizontal Drilling has opened new resources and significantly improved productivity. AmetrineAmetrine Ametrine is a bicolor quartz (amethyst + citrine) and a gemstone of growing popularity. IoliteIolite Iolite is the gem variety of the mineral cordierite. An alternative to sapphire and tanzanite.
Uses of MarbleUses of Marble The Uses of Marble are numerous and diverse. You will be surprised by how it is used. GraniteGranite Granite - The intrusive igneous rock that underlies continents and countertops. Teacher ResourcesTeacher Resources Teacher Resources - K-12 resources for teaching about earth science. Largest DesertLargest Desert Largest Desert - The Sahara is huge but two polar deserts are larger.
CorundumCorundum Corundum is the third hardest mineral. It is also the mineral of ruby and sapphire. MetalsMetals Metals are important mineral products used in manufacturing and construction projects. ShaleShale Shale - The rock that has quickly transformed the oil and gas industry. Tallest TsunamiTallest Tsunami Tallest Tsunami - A wave with a run-up height of 1720 feet occurred in Lituya Bay, Alaska.
Mount EtnaMount Etna Mount Etna - The most active volcano in Europe continues an eruption that started in 2001. Hydraulic FracturingHydraulic Fracturing Hydraulic Fracturing - Increases well yield by fracturing the reservoir rock with fluid injection. Volcanoes in SpaceExtraterrestrial Volcanoes Extraterrestrial Volcanoes - Earth is not the only solar system body with volcanoes. Rock ArtRock Art Rock Art - People have been marking on rocks for thousands of years.
Petrified WoodPetrified Wood Petrified Wood is a fossil that forms when dissolved material preciptates and replaces wood. SnowflakesHow Do Snowflakes Form? How Do Snowflakes Form? They start as tiny crystals and change as they fall to Earth. Largest VolcanoesLargest Volcanoes Largest Volcano - That title is shared by Tamu Massif, Mauna Kea and Ojos del Salado. Largest EarthquakeLargest Earthquake Largest Earthquake ever recorded - Magnitude 9.5. Chile, 1960.
Salt DomesSalt Domes Salt Domes - Columns of salt that move upwards because of their low specific gravity. What Is The Moho?What Is The Moho? What Is The Moho? Learn about the Mohorovicic Discontinuity - the mantle/crust boundary. What is Geology?What is Geology? What is Geology? - The study of Earth materials, structures, processes and life over time. Rocks on MarsRocks on Mars Rocks on Mars - Many of the rocks found on Mars are not very different from Earth rocks.
Rock GlaciersRock Glaciers Rock Glaciers - Masses of rock, ice, snow, mud and water that slowly flow down slope. What is LNG?What is LNG? What is LNG? The use of LNG as an energy source is growing rapidly. Learn more about LNG. Rare Earth ElementsRare Earth Elements Rare Earths - Special materials used in electronics, defense, medical & many other products. HematiteHematite on Mars Hematite - The most important ore of iron. A source of mineral pigment since prehistory.
MeteoritesMeteorites Meteorites - Rocks that were once parts of planets or large asteroids. US Diamond MinesUS Diamond Mines US Diamond Mines - Did you know that diamonds have been found in the United States? AstronomyAstronomy Astronomy - Fantastic images and articles about solar system and deep-space astronomy. MisconceptionDiamonds from Coal Diamond Misconception - Lots of people think that diamonds form from coal. Not True!
Cave of the HandsCave of the Hands Cave of the Hands is a cave where ancient people painted hands about 9000 years ago. Great Rift ValleyGreat Rift Valley The East Africa Rift System - The extensive fault system that is tearing Africa apart. Tanzanitetanzanite Tanzanite was unknown until a few decades ago but it has erupted into wide popularity. SoapstoneSoapstone Soapstone is a metamorphic rock with properties that make it suitable for a variety of projects.
BasaltBasalt Basalt - Most of the ocean basin and part of the continents are underlain by basalt. USA Landslide MapLandslides Landslide Incidence Map - A USGS map showing landslide incidence in the United States. Frac SandFrac Sand Frac Sand - The amount of frac sand produced in the USA is up by over 300% since 2009. Arctic Seafloor MapArctic Ocean Seafloor Map Arctic Ocean Seafloor Map The ridges, basins, shelves and rifts defining the Arctic seafloor.
       

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