Geology and Earth Science News and Information
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What is Geology?
What is Geology? The study of Earth materials, structures, processes and life over time.
Fire Opal is a transparent to translucent opal with a yellow, orange or red background color.
Coal Close Up
Coal Through a Microscope - Coal is more than a black rock. It is THE most interesting rock.
Wall Maps - Wall maps of the world, continents, states and the USA.
Rock Art - People have been marking on rocks for thousands of years.
Geology.com News contains news about geology and earth science from around the world.
Obsidian - the volcanic rock that cools so quickly that it becomes a natural glass.
The Brewery Rock ?
The Rock Used to Make Beer - Geologists are beer experts and should know about this rock.
Granite - The intrusive igneous rock that underlies continents and countertops.
Ammolite is a fossil and a gemstone. It is shell material from fossil ammonites.
What Is The Moho?
What Is The Moho? The Mohorovicic Discontinuity is the mantle/crust boundary.
The Acid Test
The Acid Test - Geologists use dilute hydrochloric acid to identify carbonate minerals.
Don*t Go To Jail
Know the Rules before removing rocks, fossils or minerals from public or private property.
Emerald is the most popular green gemstone in the United States and most of the world.
Salt Domes - Salt structures that are often associated with oil and natural gas accumulations.
Types Of Eruptions
Types of Volcanic Eruptions - A description of the most common eruption types.
Asteroid Impact Map
Asteroid Impact Map - Explore fifty of the most obvious asteroid impact craters on Earth.
Oil Fields from Space
Oil Fields from Space - Night views of Earth show the distribution of oil field activity.
Moldavite is a gem material born about 15 million years ago when a pair of asteroids struck Europe.
Geology Books - A variety of books for reference, field trips, reading and more.
Gems from Space
Extraterrestrial Gems - A number of materials from space are used as attractive gems.
Hardness Picks - Mohs hardness testing with precise and easy-to-use hardness picks.
Minerals - Descriptions, photos, articles, properties and uses for common minerals.
Rock Tumblers - All about rock tumblers and rock tumbling. Read before you buy a tumbler.
Rock and Mineral Kits
Rock & Mineral Kits The best way to learn about rocks and minerals is with specimens!
Rare Earth Elements
Rare Earths - Special materials used in electronics, defense, medical & many other products.
Ant Hill Garnets
Ant Hill Garnets - tiny gems that ants haul to the surface and discard on their anthill. Honest!
Sea Level Rise Maps
Sea Level Rise Maps - See what will be flooded as sea level rises.
Hand Lens A 10-power folding magnifier in a metal case. A frequently used lab and field tool.
Gemstones - Colorful images and articles about diamonds and colored stones.
Crushed Stone - About four tons per person is used each year in the United States.
Tallest Tsunami - A wave with a run-up height of 1720 feet occurred in Lituya Bay, Alaska.
Volcanoes - Articles about volcanoes, volcanic hazards and eruptions past and present.
Frac Sand - A specialty sand used to maintain porosity in hydraulic fracturing.
Diamonds - Learn about the properties of diamond, its many uses, and diamond discoveries.
Geology Tools Rock hammers, field bags, hand lenses, maps, hardness picks, gold pans.
Rocks - Galleries of igneous, sedimentary and metamorphic rock photos with descriptions.
World Record Lightning - this lake has more lightning than any other place in the world.
Volcanic Explosivity - Rating volcanic eruptions based upon the volume of tephra ejected.
The Richest Meteorite Field - More meteorites found here than anywhere else on Earth.
Quartzite is metamorphic rock formed when sandstone is subjected to heat and pressure.
Teacher Resources - K-12 resources for teaching about earth science.
Geodes look like ordinary rocks on the outside but can be spectacular inside!
Land Below Sea Level
Land Below Sea Level - Did you know that dozens of land locations are below sea level?
Geology of Helium
Helium is a byproduct of the natural gas industry. Its most important use is in MRI.
What Is Earth Science?
What Is Earth Science? The study of Earth and its neighbors in space. Learn more!
Utica Shale is confirmed as a major source of oil, natural gas and natural gas liquids.
What is LNG?
What is LNG? The use of LNG as an energy source is growing rapidly. Learn more about LNG.
Bear Attacks - Knowing how to react to a bear encounter or attack could save your life.
Chalcopyrite - The most important ore of copper for over five thousand years.
Crater of Diamonds
Crater of Diamonds - The only diamond mine in the world where you can be the miner.
Great Rift Valley
The East Africa Rift System - The extensive fault system that is tearing Africa apart.
UV Mineral Lamp
Portable UV Lamp - Short and long wave UV for fluorescent mineral viewing.
Diamond Misconception - Many people think that diamonds form from coal. Not True!
San Andreas Fault Map
Google Map of the San Andreas Fault - Zoom in to see the fault trace on satellite images.
Gem Silica is a blue chalcedony colored by copper. It is the rarest and most valuable chalcedony.
Gold Pans and Panning Kits - classifiers, snuffer bottles. Learn how to pan for Gold.
Meteorites - Rocks that were once parts of planets or large asteroids.
Cave of the Hands
Cave of the Hands is a cave where ancient people painted hands about 9000 years ago.
Expansive Soil causes more damage than floods, hurricanes & tornadoes combined.
Arctic Seafloor Map
Arctic Ocean Seafloor Map - The ridges, basins, shelves and rifts defining the Arctic seafloor.
Largest Volcano - That title is shared by Tamu Massif, Mauna Kea and Ojos del Salado.
Ametrine is a bicolor quartz (amethyst + citrine) and a gemstone of growing popularity.
June 6, 1912
June 6, 1912 - The most powerful volcanic eruption of the 20th century.
Lightning Strikes Map
Lightning Strikes Map by NASA shows the worldwide distribution of lightning activity.
Uses of Marble
The Uses of Marble are numerous and diverse. You will be surprised by how it is used.
Ruby and Sapphire
Ruby and Sapphire are the 2nd and 3rd most popular colored stones in the United States.
Fluorescent Minerals and rocks glow with spectacular colors under ultraviolet light.
Garnet is best known as a red gemstone. It occurs in any color and has many industrial uses.
Canada is one of the world*s leading producers of gem-quality diamonds.
Blue Flames and the largest highly acidic lake in the world at Kawah Ijen Volcano.
Troglobites are creatures that have adapted to a permanent life in the darkness of a cave.
Lapis Lazuli - a metamorphic rock and the most popular blue opaque gemstone in history.
Labradorite is a feldspar mineral that sometimes exhibits an iridescent play-of-color.
Field Courses - Over 80 field courses for undergraduate geology students.
Uses of Gold
The Many Uses of Gold - Unique properties make gold one of the most useful metals.
Diamond Production leaders include: Botswana, Russia, Angola and Canada.
What is a Geyser?
What is a Geyser? Photos and information about geysers in many parts of the world.
Facts About Copper
Facts About Copper - Information about copper uses, production, resources and more.
Soapstone is a metamorphic rock with properties that make it suitable for a variety of projects.
Herkimer Diamonds Doubly-terminated quartz crystals used as specimens and gems.
Ethiopian Opal - The new opal heavyweight that might give Australia a run.
Mineral Rights - Who owns the minerals under your land? Who wants to buy them?
What is a Maar?
What is a Maar? The second most common volcanic landscape feature on Earth.
Sliding Rocks Mystery - What causes these rocks to slide across a playa in Death Valley?
Petrified Wood is a fossil that forms when dissolved material precipitates and replaces wood.
Mineraloids are amorphous naturally-occurring inorganic solids that lack crystallinity.
Rhodonite - a manganese silicate used as a minor ore of manganese and as a gemstone.
Homeowners Insurance usually does not cover the most common geologic hazards.
Sand is a diverse material. This gallery includes photos of sand from around the world.
Tanzanite was unknown until a few decades ago but it has erupted into wide popularity.
Peridotite is a chromite host rock, a source of diamonds and a possible carbon dioxide sink.
Azurite - Used as an ore of copper, a pigment, ornamental stone and gem material.
Tallest Mountain - Everest has rivals in tallness, altitude and distance to the center of Earth.
Eagle Ford Shale
Eagle Ford Shale - One of the most prolific oil and gas producers in the United States.
US Diamond Mines
US Diamond Mines - Did you know that diamonds have been mined in the United States?
What are Glaciers?
What are Glaciers? Learn how glaciers form, flow, advance, retreat, and change over time.
Tourmaline - the most colorful mineral and natural gem material on Earth.
California Earthquake Maps - A collection of isoseismal maps for earthquakes in California.
Horizontal Drilling has opened new resources and significantly improved productivity.
Mohs Hardness Scale is a set of reference minerals used for classroom hardness testing.
Dowsing is a method used to find underground water that is rejected by most geologists.
Rhyolite An extrusive igneous rock with a high silica content, produced from granitic magma.
Sunstone - A gem feldspar with aventurescence caused by light reflecting from platy inclusions.
Methane Hydrate deposits contain more fuel value than all other fossil fuels combined.
Hematite - The most important ore of iron. A source of mineral pigment since prehistory.
Corundum is the third hardest mineral. It is also the mineral of ruby and sapphire.
Turquoise - A bluish-green gem material that has been used for over 6000 years.
Azurite Granite ? A white granite with blue orbs of azurite. A new material from Pakistan.
Mount Cleveland is an active volcano in the Aleutian Islands and a threat to air traffic.
100+ Gems - Photos of over 100 beautiful gems ranging from the popular to the obscure.
Mount Vesuvius - geology, history, maps, facts and more about the Vesuvius eruptions.
Kyanite is a metamorphic mineral used to make porcelain, abrasive products and gems.
Watch out for Ticks!
Ticks are a problem for geologists in some areas. Learn to recognize and avoid them.
Rhodochrosite - a manganese mineral used as an ore, a pink gem and an ornamental stone.
Zircon is the primary ore of zirconium and a gemstone that is available in many colors.
Shale - The rock that has quickly transformed the oil and gas industry.
Olivine - Abundant in Earth*s mantle. A constituent of meteorites. The gem peridot.
Range of Bear Species - Where you might encounter different types of bears.
Pavlof Volcano - one of the most active volcanoes in North America and a threat to air traffic.
Hydraulic Fracturing increases well yield by fracturing the reservoir rock with fluid injection.
Mount Etna - The most active volcano in Europe continues an eruption that started in 2001.
Life on Europa?
Life on Europa could exist in a salty ocean deep below its frozen surface.
Plate Tectonics - Articles and maps about plate tectonics and the interior of Earth.
Pictures of Opal - A collection of different types of opal from all around the world and Mars too!
Fossils - Learn about fossils and discoveries around the world.
Oil and Gas
Oil and Gas - Articles about oil and natural gas in the US and around the world.
Fee Mining Sites
Fee Mining sites are mines that you can enter, pay a fee, and keep anything that you find.
Largest Earthquake ever recorded - Magnitude 9.5. Chile, 1960.