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News and Information About Geology and Earth Science

Petrified WoodPetrified Wood Petrified Wood is a fossil that forms when dissolved material preciptates and replaces wood. IoliteIolite Iolite is the gem variety of the mineral cordierite. An alternative to sapphire and tanzanite. Azurite GraniteK2 Granite Azurite Granite ? A white granite with blue orbs of azurite. A new material from Pakistan. Great Rift ValleyGreat Rift Valley The East Africa Rift System - The extensive fault system that is tearing Africa apart.
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. Geology.com NewsGeology News Geology.com News is updated several times each week. Read it here or receive email updates. What are Glaciers?What are Glaciers? What are Glaciers? Learn how glaciers form, flow, advance, retreat, and change over time.
Geology StoreGeology Tools Geology Tools - Rock hammers, field bags, hand lenses, maps, hardness picks, gold pans. RocksRocks Rocks - Galleries of igneous, sedimentary and metamorphic rock photos with descriptions. US Diamond MinesUS Diamond Mines US Diamond Mines - Did you know that diamonds have been mined in the United States? Yosemite GlaciersYosemite Glaciers Yosemite Glaciers There are two active glaciers in Yosemite - but they are slowly melting away.
Tanzanitetanzanite Tanzanite was unknown until a few decades ago but it has erupted into wide popularity. Oil Fields from Spacenatural gas flaring Oil Fields from Space - Night views of Earth show the distribution of oil field activity. San Andreas Fault MapSan Andreas Fault Map Google Map of the San Andreas Fault Zoom in to see the fault trace on satellite images. Fireworks & Mineralsfireworks The Science of Fireworks Their shapes and colors - produced through chemistry, physics & art.
Coal Close UpCoal through a microscope Coal Through a Microscope - Coal is more than a black rock. It is THE most interesting rock. Mount ClevelandMount Cleveland Mount Cleveland is an active volcano in the Aleutian Islands and a threat to air traffic. MineralsMinerals Minerals - Descriptions, photos, articles, properties and uses for common minerals. Sea Level Rise MapsSea Level Rise Maps Sea Level Rise Maps - See what will be flooded as sea level rises.
PeridotiteKimberlite The Host Rock of Diamonds - Diamonds are found in Kimberlite, a variety of peridotite. Arctic Seafloor MapArctic Ocean Seafloor Map Arctic Ocean Seafloor Map The ridges, basins, shelves and rifts defining the Arctic seafloor. Find Minerals & GemsFee Mining Find Minerals and Gems - Dozens of sites where you can dig and keep what you find. Earthquake MapsCalifornia Earthquake Maps California Earthquake Maps A collection of isoseismal maps for earthquakes in California.
Volcanic ExplosivityVolcanic Explosivity Volcanic Explosivity - Rating volcanic eruptions based upon the volume of tephra ejected. Life on Europa ?Life on Europa Life on Europa might exist in a salty ocean a short distance below its frozen surface. SunstoneSunstone Sunstone is a gem feldspar with aventurescence caused by light reflecting from platy inclusions. Lightning Strikes MapLightning Strikes Map Lightning Strikes Map - A NASA map showing the worldwide distribution of lightning activity.
Oil and GasOil and Gas Oil and Gas - Articles about oil and natural gas in the US and around the world. 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. Mount VesuviusMount Vesuvius Mount Vesuvius - geology, history, maps, facts and more about the Vesuvius eruptions.
The Brewery Rock ?diatomite The Rock Used to Make Beer - Geologists are beer experts and should know about this rock. Bear AttacksBear Attacks Bear Attacks - Knowing how to react to a bear encounter or attack could save your life. Google Earth - FreeDownload Google Earth Free Free Google Earth software allows you to browse seamless world satellite images. Free. OpalsOpal Pictures of Opal - A collection of different types of opal from all around the world and Mars too!
GemstonesGemstones Gemstones - Colorful images and articles about diamonds and colored stones. DonorsChoose.orgDonorsChoose.org Help a Science Teacher - At DonorsChoose.org you can support a K-12 science project. Lapis LazuliLapis Lazuli Lapis Lazuli - a metamorphic rock and the most popular blue opaque gemstone in history. DiamondsDiamonds Diamonds - Learn about the properties of diamond, its many uses and diamond discoveries.
Asteroid Impact MapAsteroid Impact Map Asteroid Impact Map - Explore fifty of the most obvious asteroid impact craters on Earth. Fluorescent MineralsFluorescent Minerals Fluorescent Minerals and rocks glow with spectacular colors under ultraviolet light. Dowsingdowsing Dowsing is a method used to find underground water that is rejected by most geologists. Land Below Sea LevelLand Below Sea Level Land Below Sea Level - Did you know that dozens of land locations are below sea level?
ObsidianObsidian Obsidian - the volcanic rock that cools so quickly that it becomes a natural glass. San Andreas FaultSan Andreas Fault The San Andreas Fault - A feature that separates the Pacific and North American Plates. 100+ Gemstonescolored stones 100+ Gems - Photos of over 100 beautiful gems ranging from the popular to the obscure. RhodoniteRhodonite Rhodonite - a manganese silicate used as a minor ore of manganese and as a gemstone.
Plate TectonicsPlate Tectonics Plate Tectonics - Articles, maps, information about plate tectonics and the interior of Earth. MisconceptionDiamonds from Coal Diamond Misconception - Lots of people think that diamonds form from coal. Not True! Watch out for Ticks!ticks Ticks are a problem for geologists in some areas. Learn to recognize and avoid them. EmeraldEmerald Emerald is the most popular green gemstone in the United States and most of the world.
FossilsFossils Fossils - Learn about fossils and discoveries around the world. Teacher ResourcesTeacher Resources Teacher Resources - K-12 resources for teaching about earth science. Tallest TsunamiTallest Tsunami Tallest Tsunami - A wave with a run-up height of 1720 feet occurred in Lituya Bay, Alaska. TurquoiseTurquoise Turquoise - A bluish-green gem material that has been used for over 6000 years.
Gems from SpaceGems from Space Extraterrestrial Gems - A number of materials from space are used as attractive gems. Crushed StoneCrushed Stone Crushed Stone - About four tons per person is used each year in the United States. What Is The Moho?What Is The Moho? What Is The Moho? Learn about the Mohorovicic Discontinuity - the mantle/crust boundary. The Acid TestThe Acid Test The Acid Test - Geologists use dilute hydrochloric acid to identify carbonate minerals.
Cave of the HandsCave of the Hands Cave of the Hands is a cave where ancient people painted hands about 9000 years ago. AmmoliteAmmolite Ammolite is a fossil and a gemstone. It is shell material from fossil ammonites. Mineral HardnessMohs Hardness Test Mohs Hardness Scale is a set of reference minerals used for classroom hardness testing. Methane HydrateMethane Hydrate Methane Hydrate deposits contain more fuel value than all other fossil fuels combined.
What Is Earth Science?What Is Earth Science? What Is Earth Science? The study of Earth and its neighbors in space. Learn more! Huge Diamond DepositPopigai Diamonds The Largest Diamond Deposit in the world could be under Popigai Crater in Russia. Uses of MarbleUses of Marble The Uses of Marble are numerous and diverse. You will be surprised by how it is used. What is Geology?What is Geology? What is Geology? - The study of Earth materials, structures, processes and life over time.
CorundumCorundum Corundum is the third hardest mineral. It is also the mineral of ruby and sapphire. LabradoriteLabradorite Labradorite is a feldspar mineral that sometimes exhibits an iridescent play-of-colors Homeowners InsuranceHomeowners Insurance Homeowners Insurance usually does not cover the most common geologic hazards. Rare Earth ElementsRare Earth Elements Rare Earths - Special materials used in electronics, defense, medical & many other products.
Titan SubmarineTitan Submarine Exploring a Hydrocarbon Sea on Titan with a submarine is a potential NASA mission. MetalsMetals Metals are important mineral products used in manufacturing and construction projects. Facts About CopperCopper Facts About Copper - Information about copper uses, production, resources and more. Rock ArtRock Art Rock Art - People have been marking on rocks for thousands of years.
AstronomyAstronomy Astronomy - Fantastic images and articles about solar system and deep-space astronomy. Ruby and Sapphireruby and sapphire Ruby and Sapphire are the 2nd and 3rd most popular colored stones in the United States. MeteoritesMeteorites Meteorites - Rocks that were once parts of planets or large asteroids. Largest EarthquakeLargest Earthquake Largest Earthquake ever recorded - Magnitude 9.5. Chile, 1960.
GraniteGranite Granite - The intrusive igneous rock that underlies continents and countertops. What is a Geyser?What is a Geyser? Photos of Geysers from around the world with information about height, eruption interval, more. SoapstoneSoapstone Soapstone is a metamorphic rock with properties that make it suitable for a variety of projects. Largest DesertLargest Desert Largest Desert - The Sahara is huge but two polar deserts are larger.
Horizontal DrillingHorizontal Drilling Horizontal Drilling has opened new resources and significantly improved productivity. USA Landslide MapLandslides Landslide Incidence Map - A USGS map showing landslide incidence in the United States. Rock GlaciersRock Glaciers Rock Glaciers - Masses of rock, ice, snow, mud and water that slowly flow down slope. SandSand Sand is a diverse material. This gallery includes photos of sand from around the world.
AmetrineAmetrine Ametrine is a bicolor quartz (amethyst + citrine) and a gemstone of growing popularity. Tallest MountainTallest Mountain Tallest Mountain - Everest has rivals in tallness, altitude and distance to the center of Earth. GarnetGarnet Garnet is best known as a red gemstone. It occurs in any color and has many industrial uses. Frac SandFrac Sand Frac Sand - The amount of frac sand produced in the USA is up by over 300% since 2009.
Volcanoes in SpaceExtraterrestrial Volcanoes Extraterrestrial Volcanoes - Earth is not the only solar system body with volcanoes. HematiteHematite on Mars Hematite - The most important ore of iron. A source of mineral pigment since prehistory. Chatoyant GemsChatoyant Gems Chatoyant Gems look like the eye of a cat. A line of light moves across the surface of the stone. VolcanoesVolcanoes Volcanoes - Articles about volcanoes, volcanic hazards and eruptions past and present.
Largest VolcanoesLargest Volcanoes Largest Volcano - That title is shared by Tamu Massif, Mauna Kea and Ojos del Salado. Uses of GoldUses of Gold The Many Uses of Gold - Unique properties make gold one of the most useful metals. Hydraulic FracturingHydraulic Fracturing Hydraulic Fracturing - Increases well yield by fracturing the reservoir rock with fluid injection. ShaleShale Shale - The rock that has quickly transformed the oil and gas industry.
Limonitelimonite Limonite - an amorphous iron oxide. Used as an iron ore and pigment since prehistory. BasaltBasalt Basalt - Most of the ocean basin and part of the continents are underlain by basalt. What is LNG?What is LNG? What is LNG? The use of LNG as an energy source is growing rapidly. Learn more about LNG. Types Of EruptionsTypes Of Eruptions Types of Volcanic Eruptions - A description of the most common eruption types.
Rocks on MarsRocks on Mars Rocks on Mars - Many of the rocks found on Mars are not very different from Earth rocks. Mount EtnaMount Etna Mount Etna - The most active volcano in Europe continues an eruption that started in 2001. Salt DomesSalt Domes Salt Domes - Columns of salt that move upwards because of their low specific gravity. Yosemite Rock FallYosemite Rock Fall Photos Yosemite Rock Fall Photos A photo sequence of a rockfall and debris avalanche by Herb Dunn.
       

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