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News and Information About Geology and Earth Science

Hawaiian Hot SpotHawaiian Hot Spot How did the Hawaiian Islands Form? The power of a moving plate over a stationary hot spot. OpalsOpal Pictures of Opal - A collection of different types of opal from all around the world and Mars too! Salt DomesSalt Domes Salt Domes - Columns of salt that move upwards because of their low specific gravity. Fire OpalFire Opal Fire Opal is a transparent to translucent opal with a yellow, orange or red background color.
Geology.com NewsGeology News Geology.com News is updated several times each week. Read it here or receive email updates. RocksRocks Rocks - Galleries of igneous, sedimentary and metamorphic rock photos with descriptions. Geologist Toolsgeologist tools Geologist Tools - Visit our store for a large selection of field and laboratory tools. GraniteGranite Granite - The intrusive igneous rock that underlies continents and countertops.
MineralsMinerals Minerals - Descriptions, photos, articles, properties and uses for common minerals. ShaleShale Shale - The rock that has quickly transformed the oil and gas industry. BasaltBasalt Basalt - Most of the ocean basin and part of the continents are underlain by basalt. 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. Volcanoes in SpaceExtraterrestrial Volcanoes Extraterrestrial Volcanoes - Earth is not the only solar system body with volcanic activity. DiamondsDiamonds Diamonds - Learn about the properties of diamond, its many uses and diamond discoveries. Homeowners InsuranceHomeowners Insurance Homeowners Insurance usually does not cover the most common geologic hazards.
Land Below Sea LevelLand Below Sea Level Land Below Sea Level - Did you know that dozens of land locations are below sea level? Plate TectonicsPlate Tectonics Plate Tectonics - Articles, maps, information about plate tectonics and the interior of Earth. Pavlof VolcanoPavlof Volcano Pavlof Volcano is one of the most active volcanoes in North America and a threat to air traffic. AmmoliteAmmolite Ammolite is a fossil and a gemstone. It is shell material from fossil ammonites.
What Is Earth Science?What Is Earth Science? What Is Earth Science? The study of Earth and its neighbors in space. Learn more! Sliding RocksSliding Rocks Sliding Rocks Mystery - What causes these rocks to slide across a playa in Death Valley? ObsidianObsidian Obsidian - the volcanic rock that cools so quickly that it becomes a natural glass. Oil and GasOil and Gas Oil and Gas - Articles about oil and natural gas in the US and around the world.
Find Minerals & GemsFee Mining Find Minerals and Gems - Dozens of sites where you can dig and keep what you find. Mount VesuviusMount Vesuvius Mount Vesuvius - geology, history, maps, facts and more about the Vesuvius eruptions. Uses of GoldUses of Gold The Many Uses of Gold - Unique properties make gold one of the most useful metals. Asteroid Impact MapAsteroid Impact Map Asteroid Impact Map - Explore fifty of the most obvious asteroid impact craters on Earth.
Fluorescent MineralsFluorescent Minerals Fluorescent Minerals glow with spectacular colors under ultraviolet light. TroglobitesTroglobites Troglobites are creatures that have adapted to a permanent life in the darkness of a cave. MisconceptionDiamonds from Coal Diamond Misconception - Lots of people think that diamonds form from coal. Not True! Bear AttacksBear Attacks Bear Attacks - Knowing how to react to a bear encounter or attack could save your life.
Sea Level Rise MapSea Level Rise Map Sea Level Rise Map - A Google map that shows where flooding will occur as sea level rises. VolcanoesVolcanoes Volcanoes - Articles about volcanoes, volcanic hazards and eruptions past and present. EmeraldEmerald Emerald is the most popular green gemstone in the United States and most of the world. FossilsFossils Fossils - Learn about fossils and fossil discoveries around the world.
100+ Gemstonescolored stones 100+ Gems - Photos of over 100 beautiful gems ranging from the popular to the obscure. Gems from SpaceGems from Space Extraterrestrial Gems - A number of materials from space are used as attractive gems. Lunar Rift Systemlunar rift system Lunar Rift System? Gravity maps revise the geologic history of the near side of the moon. Google Earth - FreeDownload Google Earth Free Free Google Earth software allows you to browse seamless world satellite images. Free.
Rock ArtRock Art Rock Art - People have been marking on rocks for thousands of years. Tallest TsunamiTallest Tsunami Tallest Tsunami - A wave with a run-up height of 1720 feet occurred in Lituya Bay, Alaska. LabradoriteLabradorite Labradorite is a feldspar mineral that sometimes exhibits an iridescent play-of-colors TurquoiseTurquoise Turquoise - A blue to bluish-green gem material that has been used for over 6000 years.
Crater of DiamondsCrater of Diamonds Crater of Diamonds - The only diamond mine in the world where you can be the miner. Teacher ResourcesTeacher Resources Teacher Resources - K-12 resources for teaching about earth science. AstronomyAstronomy Astronomy - Fantastic images and articles about solar system and deep-space astronomy. Cave of the HandsCave of the Hands Cave of the Hands is a cave where ancient people painted hands about 9000 years ago.
Facts About CopperCopper Facts About Copper - Information about copper uses, production, resources and more. NovaruptaNovarupta Most Powerful Eruption of the 20th Century - One hour later, the blast was heard in Juneau. Volcanic ExplosivityVolcanic Explosivity Volcanic Explosivity - Rating volcanic eruptions based upon the volume of tephra ejected. 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. US Diamond MinesUS Diamond Mines US Diamond Mines - Did you know that diamonds have been found in the United States? What is a Maar?What is a Maar? What is a Maar? The second most common volcanic landscape feature on Earth. Dowsingdowsing Dowsing is a method used to find underground water that is rejected by most geologists.
MeteoritesMeteorites Meteorites - Rocks that were once parts of planets or large asteroids. Largest EarthquakeLargest Earthquake Largest Earthquake ever recorded - Magnitude 9.5. Chile, 1960. Ruby and Sapphireruby and sapphire Ruby and Sapphire are the 2nd and 3rd most popular colored stones in the United States. PumicePumice Pumice is a rock formed during explosive volcanic eruptions. It has a wide variety of uses.
CorundumCorundum Corundum is the third hardest mineral. It is also the mineral of ruby and sapphire. SoapstoneSoapstone Soapstone is a metamorphic rock with properties that make it suitable for a variety of projects. Tanzanitetanzanite Tanzanite was unknown until a few decades ago but it has erupted into wide popularity. What is Geology?What is Geology? What is Geology? - The study of Earth materials, structures, processes and life over time.
San Andreas FaultSan Andreas Fault The San Andreas Fault - A feature that separates the Pacific and North American Plates. MetalsMetals Metals are important mineral products used in manufacturing and construction projects. Organic GemsOrganic Gems Organic Gems are gems formed from or by plants or animals. They might also be fossils. Watch out for Ticks!ticks Ticks are a problem for geologists in some areas. Learn to recognize and avoid them.
USA Landslide MapLandslides Landslide Incidence Map - A USGS map showing landslide incidence in the United States. IoliteIolite Iolite is the gem variety of the mineral cordierite. An alternative to sapphire and tanzanite. Horizontal DrillingHorizontal Drilling Horizontal Drilling has opened new resources and significantly improved productivity. Mount EtnaMount Etna Mount Etna - The most active volcano in Europe continues an eruption that started in 2001.
SandSand Sand is a diverse material. This gallery includes photos of sand from around the world. Petrified WoodPetrified Wood Petrified Wood is a fossil that forms when dissolved material preciptates and replaces wood. GarnetGarnet Garnet is best known as a red gemstone. It occurs in any color and has many industrial uses. Tallest MountainTallest Mountain Tallest Mountain - Everest has rivals in tallness, altitude and distance to the center of Earth.
Geologic Time ScaleGeologic Time Scale Divisions of Geologic Time - USGS time scale with unit names and age estimates. Types Of EruptionsTypes Of Eruptions Types of Volcanic Eruptions - A description of the most common eruption types. Salt GlaciersSalt Glaciers Salt Glaciers are masses of salt that flow downslope under their own weight. Largest DesertLargest Desert Largest Desert - The Sahara is huge but two polar deserts are larger.
The Acid TestThe Acid Test The Acid Test - Geologists use dilute hydrochloric acid to identify carbonate minerals. What is a Geyser?What is a Geyser? Photos of Geysers from around the world with information about height, eruption interval, more. AmetrineAmetrine Ametrine is a bicolor quartz (amethyst + citrine) and a gemstone of growing popularity. Frac SandFrac Sand Frac Sand - The amount of frac sand produced in the USA is up by over 300% since 2009.
SunstoneSunstone Sunstone is a gem feldspar with aventurescence caused by light reflecting from platy inclusions. Coal Close UpCoal through a microscope Coal Through a Microscope - Coal is more than a black rock. It is THE most interesting rock. Uses of MarbleUses of Marble The Uses of Marble are numerous and diverse. You will be surprised by how it is used. Hydraulic FracturingHydraulic Fracturing Hydraulic Fracturing - Increases well yield by fracturing the reservoir rock with fluid injection.
Largest VolcanoesLargest Volcanoes Largest Volcano - That title is shared by Tamu Massif, Mauna Kea and Ojos del Salado. Oil SandsOil Sands Oil Sands contain oil in the form of bitumen. A major oil resource that can be difficult to produce. Earthquake MapsEarthquake Maps California Earthquake Maps - A collection of isoseismal maps for earthquakes in California. Chatoyant GemsChatoyant Gems Chatoyant Gems look like the eye of a cat. They have a line of light that moves across the stone.
Methane HydrateMethane Hydrate Methane Hydrate deposits contain more fuel value than all other fossil fuels combined. Eagle Ford ShaleEagle Ford Shale Eagle Ford Shale - One of the most prolific producers of oil and gas 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. Mineral HardnessMohs Hardness Test Mohs Hardness Scale is a set of reference minerals used for classroom hardness testing.
Huge Diamond DepositPopigai Diamonds The Largest Diamond Deposit in the world could be under Popigai Crater in Russia. MineraloidsMineraloids Mineraloids are amorphous naturally-occurring inorganic solids that lack crystallinity. Great Rift ValleyGreat Rift Valley The East Africa Rift System - The extensive fault system that is tearing Africa apart. Rock GlaciersRock Glaciers Rock Glaciers - Masses of rock, ice, snow, mud and water that slowly flow down slope.
PeridotiteKimberlite The Host Rock of Diamonds - Diamonds are found in Kimberlite, a variety of peridotite. SnowflakesHow Do Snowflakes Form? How Do Snowflakes Form? They start as tiny mineral crystals but they might not reach the Earth. What Is The Moho?What Is The Moho? What Is The Moho? Learn about the Mohorovicic Discontinuity - the mantle/crust boundary. HematiteHematite on Mars Hematite - the most important ore of iron and a source of mineral pigment since prehistory.
       

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