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lakes on MarsLakes On Mars - NASA's Curiosity rover discovers lake sediments on Mars.   maw sit sitMaw Sit Sit is a metamorphic rock and a gem material that was once thought be jade.   blue flamesBlue Flaming Sulfur Flows and the largest highly acidic lake in the world at Kawah Ijen Volcano.

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RocksRocks - Galleries of igneous, sedimentary and metamorphic rock photos with descriptions.   MineralsMinerals - Descriptions, photos, articles, properties and uses for common minerals.   VolcanoesVolcanoes - Articles about volcanoes, volcanic hazards and eruptions past and present.
GemstonesGemstones - Colorful images and articles about diamonds and colored stones.   Plate TectonicsPlate Tectonics - Articles, maps, information about plate tectonics and the interior of Earth.   Oil and GasOil and Gas - Articles about oil and natural gas in the US and around the world.
Geologic Hazards Geologic Hazards include dangers like floods, earthquakes, volcanoes, landslides and more.   Fossils Fossils Learn about fossils and fossil discoveries around the world.   What is Geology?What is Geology? - The study of Earth materials, structures, processes and life over time.

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Mohs Hardness TestMohs Hardness Scale is a set of reference minerals used for classroom hardness testing.   Uses of GoldThe Many Uses of Gold - Unique properties make gold one of the most useful metals.   What Is Earth Science?What Is Earth Science? The study of Earth and its neighbors in space. Learn more!
Rare Earth ElementsRare Earths - Special materials used in electronics, defense, medical & many other products.   EmeraldEmerald is the most popular green gemstone in the United States and most of the world.   Crater of DiamondsCrater of Diamonds - The only diamond mine in the world where you can be the miner.
Diamonds from CoalDiamond Misconception - Lots of people think that diamonds form from coal. Not True!   Ant Hill GarnetsAnt Hill Garnets are tiny garnets that ants haul to the surface and discard on their anthill. Honest!   What are Glaciers?What are Glaciers? Learn how glaciers form, flow, advance, retreat, and change over time.
Asteroid Impact MapAsteroid Impact Map - Explore fifty of the most obvious asteroid impact craters on Earth.   DiamondsDiamonds - Learn about the properties of diamond, its many uses and diamond discoveries.   The Acid TestThe Acid Test - Geologists use dilute hydrochloric acid to identify carbonate minerals.
colored stones100+ Gems - Photos of over 100 beautiful gems ranging from the popular to the obscure.   Sliding RocksSliding Rocks Mystery - What causes these rocks to slide across a playa in Death Valley?   MeteoritesMeteorites - Rocks that were once parts of planets or large asteroids.
Mount VesuviusMount Vesuvius - geology, history, maps, facts and more about the Vesuvius eruptions.   San Andreas FaultThe San Andreas Fault - A feature that separates the Pacific and North American Plates.   Petrified WoodPetrified Wood is a fossilized wood that often serves as a colorful gem material.
Gems from SpaceExtraterrestrial Gems A number of materials from space are used as attractive gems.   diatomiteThe Rock Used to Make Beer - Geologists are beer experts and should know about this rock.   Rock art - petroglyphsRock Art People have been producing rock art for thousands of years. A world-wide collection.
Azurite Granite?Azurite Granite? Found at the base of K2, the second highest mountain in the world.   dowsingDowsing is a method used to find underground water that is rejected by most geologists.   What is a Maar?What is a Maar? The second most common volcanic landscape feature on Earth.
Methane HydrateMethane Hydrate deposits contain more fuel value than all other fossil fuels combined.   OpalPictures of Opal - A collection of different types of opal from all around the world and Mars too!   Lightning Strikes MapLightning Strikes Map - A NASA map showing the worldwide distribution of lightning activity.
LandslidesLandslides A USGS fact sheet about landslides and events that trigger them.   CopperFacts About Copper - Information about copper uses, production, resources and more.   Fluorescent MineralsFluorescent Minerals and rocks glow with spectacular colors under ultraviolet light.
Who Owns The Arctic?Who Owns The Arctic? USGS estimates that 25% of all new oil & gas will be found in the Arctic.   Frac SandFrac Sand - The amount of frac sand produced in the USA is up by over 300% since 2009.   oil and gas rightsOil and Gas Rights Who owns the minerals under your land? Who wants to buy them?
What Is The Moho?What Is The Moho? Learn about the Mohorovicic Discontinuity.   World's Tallest MountainTallest Mountain Everest has rivals in tallness, altitude and distance to the center of Earth.   Geology ToolsTools for the Geologist Rock hammers, field bags, chisels, field books, hardness kits, more.
Coal through a microscopeCoal Through a Microscope - Coal is more than a black rock. It is THE most interesting rock.   AmetrineAmetrine is a bicolor quartz (amethyst + citrine) and a gemstone of growing popularity.   Arctic Ocean Seafloor MapArctic Ocean Seafloor Map The ridges, basins, shelves and rifts defining the Arctic seafloor.
Meteorite IdentificationMeteorite Identification Step one in identifying a possible meteorite is the magnet test.   Volcanic ExplosivityVolcanic Explosivity - Rating volcanic eruptions based upon the volume of tephra ejected.   Download Google Earth FreeFree Google Earth software allows you to browse seamless world satellite images. Free.
CorundumCorundum is the third hardest mineral. It is also the mineral of ruby and sapphire.   Land Below Sea LevelLand Below Sea Level - Did you know that dozens of land locations are below sea level?   Tallest TsunamiTallest Tsunami - A wave with a run-up height of 1720 feet occurred in Lituya Bay, Alaska.
GraniteGranite - The intrusive igneous rock that underlies continents and countertops.   Sea Level Rise MapsSea Level Rise Maps - See what will be flooded as sea level rises.   SunstoneSunstone is a gem feldspar with aventurescence caused by light reflecting from platy inclusions.
US Diamond MinesUS Diamond Mines - Did you know that diamonds have been mined in the United States?   LabradoriteLabradorite is a feldspar mineral that sometimes exhibits an iridescent play-of-colors   Popigai DiamondsThe Largest Diamond Deposit in the world could be under Popigai Crater in Russia.
ruby and sapphireRuby and Sapphire are the 2nd and 3rd most popular colored stones in the United States.   Gems from SpaceExtraterrestrial Gems - A number of materials from space are used as attractive gems.   ShaleShale - The rock that has quickly transformed the oil and gas industry.
Lapis LazuliLapis Lazuli - a metamorphic rock and the most popular blue opaque gemstone in history.   San Andreas Fault MapGoogle Map of the San Andreas Fault Zoom in to see the fault trace on satellite images.   TurquoiseTurquoise - A bluish-green gem material that has been used for over 6000 years.
Great Rift ValleyThe East Africa Rift System - The extensive fault system that is tearing Africa apart.   RhodoniteRhodonite - a manganese silicate used as a minor ore of manganese and as a gemstone.   GarnetGarnet is best known as a red gemstone. It occurs in any color and has many industrial uses.
Hydraulic FracturingHydraulic Fracturing - Increases well yield by fracturing the reservoir rock with fluid injection.   Horizontal DrillingHorizontal Drilling has opened new resources and significantly improved productivity.   What is a Geyser?Photos of Geysers from around the world with information about height, eruption interval, more.
Largest DesertLargest Desert - The Sahara is huge but two polar deserts are larger.   BasaltBasalt - Most of the ocean basin and part of the continents are underlain by basalt.   Teacher ResourcesTeacher Resources - K-12 resources for teaching about earth science.
Largest EarthquakeLargest Earthquake ever recorded - Magnitude 9.5. Chile, 1960.   Tallest MountainTallest Mountain - Everest has rivals in tallness, altitude and distance to the center of Earth.   Mount ClevelandMount Cleveland is an active volcano in the Aleutian Islands and a threat to air traffic.
Crushed StoneCrushed Stone - About four tons per person is used each year in the United States.   natural gas flaringOil Fields from Space - Night views of Earth show the distribution of oil field activity.   Largest VolcanoesLargest Volcano - That title is shared by Tamu Massif, Mauna Kea and Ojos del Salado.
SoapstoneSoapstone is a metamorphic rock with properties that make it suitable for a variety of projects.   tanzaniteTanzanite was unknown until a few decades ago but it has erupted into wide popularity.   ticksTicks are a problem for geologists in some areas. Learn to recognize and avoid them.
Rock GlaciersRock Glaciers - Masses of rock, ice, snow, mud and water that slowly flow down slope.   Salt DomesSalt Domes - Columns of salt that move upwards because of their low specific gravity.   Types Of EruptionsTypes of Volcanic Eruptions - A description of the most common eruption types.
blue flamesBlue Flaming Sulfur Flows and the largest highly acidic lake in the world at Kawah Ijen Volcano.   Geology of PlutoGeology of Pluto NASA finds craters, nitrogen ice flows, mountains, and possible dunes.   QuartziteQuartzite is a nonfoliated metamorphic rock composed almost entirely of quartz.
Geology in the News
Curiosity Rover Team Confirms Ancient Lakes on Mars
October 9 | NASA images on
Los Angeles Earthquake Retrofit Bill
October 9 | Los Angeles Times
12 Maps That Explain What Divides America
October 9 | The Washington Post
Natural Gas in Georgia ?
October 8 | The Atlanta Journal Constitution
Storms after Wildfire Lead to Impaired Water Quality
October 8 | United States Geological Survey
Yosemite Science
October 8 | United States Geological Survey
Diamond Mines in Canada
October 7 |
Indonesia Oil and Gas Report
October 7 | Energy Information Administration
USGS: Unprecedented Drought in the West
October 7 | United States Geological Survey
Volcanic Eruptions Influence the Flow of Major Rivers
October 7 | United Press International
Where Does the Uranium Used in US Power Plants Come From?
October 6 | Energy Information Administration
Shipping Natural Gas from Colorado, to Oregon, and On to Asia
October 6 | The Grand Junction Daily Sentinel
BBC Admits Faking Volcano Footage ?
October 6 |
Searching for Burmese Jade, and Finding Misery
October 6 | The New York Times
South Korea Oil and Gas Report
October 5 | Energy Information Administration
South Carolina: Flooding At 1,000-Year Level
October 5 | National Public Radio
Become a Citizen Scientist
October 5 | National Science Foundation
Science of Natural Hazards -- Volcanoes
October 5 | National Science Foundation
When Baseball and Induced Seismicity Mix
October 5 | EOS Earth and Space Science News
When Nature Strikes - Landslides, Earthquakes
October 4 | University of Washington
Cave "Breathing" Affects Mineral Growth and Climate Clues
October 4 | EOS Earth and Space Science News
NMSU Geology Students Take a Road Trip to Map the State
October 3 | New Mexico State University
USGS Field Crews Are Out to Monitor Hurricane Joaquin
October 2 | United States Geological Survey
What is Nephrite?
October 2 |
1500-Year-Old Mosaic Map Found
October 2 | Discovery News
Northeast Natural Gas Exports to Canada Growing
October 2 | Energy Information Administration
The Great Potential of Diopside in the China Gem Market
October 1 | Gemological Institute of America
Norway Oil and Gas Report
October 1 | Energy Information Administration
Tracking Maps for Hurricane Joaquin
October 1 | NOAA National Hurricane Center
United States Energy Mapping System
October 1 | Energy Information Administration
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