Geology and Earth Science News and Information
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.
Google Earth - Free
Free Google Earth software allows you to browse seamless world satellite images. Free.
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.
Ammolite is a fossil and a gemstone. It is shell material from fossil ammonites.
Granite - The intrusive igneous rock that underlies continents and countertops.
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.
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.
Emerald is the most popular green gemstone in the United States and most of the world.
Oil Fields from Space
Oil Fields from Space - Night views of Earth show the distribution of oil field activity.
Asteroid Impact Map
Asteroid Impact Map - Explore fifty of the most obvious asteroid impact craters on Earth.
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.
Hardness Picks - Mohs hardness testing with precise and easy-to-use hardness picks.
Rare Earth Elements
Rare Earths - Special materials used in electronics, defense, medical & many other products.
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!
Gems from Space
Extraterrestrial Gems - A number of materials from space are used as attractive gems.
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.
Sea Level Rise Maps
Sea Level Rise Maps - See what will be flooded as sea level rises.
Ant Hill Garnets
Ant Hill Garnets - tiny gems that ants haul to the surface and discard on their anthill. Honest!
Tallest Tsunami - A wave with a run-up height of 1720 feet occurred in Lituya Bay, Alaska.
Crushed Stone - About four tons per person is used each year in the United States.
Minerals - Descriptions, photos, articles, properties and uses for common minerals.
Frac Sand - A specialty sand used to maintain porosity in hydraulic fracturing.
Volcanoes - Articles about volcanoes, volcanic hazards and eruptions past and present.
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.
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.
Rocks - Galleries of igneous, sedimentary and metamorphic rock photos with descriptions.
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.
Land Below Sea Level
Land Below Sea Level - Did you know that dozens of land locations are below sea level?
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.
Geodes look like ordinary rocks on the outside but can be spectacular inside!
What is LNG?
What is LNG? The use of LNG as an energy source is growing rapidly. Learn more about LNG.
Geology of Helium
Helium is a byproduct of the natural gas industry. Its most important use is in MRI.
Utica Shale is confirmed as a major source of oil, natural gas and natural gas liquids.
San Andreas Fault Map
Google Map of the San Andreas Fault - Zoom in to see the fault trace on satellite images.
UV Mineral Lamp
Portable UV Lamp - Short and long wave UV for fluorescent mineral viewing.
Great Rift Valley
The East Africa Rift System - The extensive fault system that is tearing Africa apart.
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.
What Is Earth Science?
What Is Earth Science? The study of Earth and its neighbors in space. Learn more!
Meteorites - Rocks that were once parts of planets or large asteroids.
Crater of Diamonds
Crater of Diamonds - The only diamond mine in the world where you can be the miner.
Diamond Misconception - Many people think that diamonds form from coal. Not True!
Arctic Seafloor Map
Arctic Ocean Seafloor Map - The ridges, basins, shelves and rifts defining the Arctic seafloor.
Cave of the Hands
Cave of the Hands is a cave where ancient people painted hands about 9000 years ago.
June 6, 1912
June 6, 1912 - The most powerful volcanic eruption of the 20th century.
Expansive Soil causes more damage than floods, hurricanes & tornadoes combined.
Lightning Strikes Map
Lightning Strikes Map by NASA shows the worldwide distribution of lightning activity.
Ametrine is a bicolor quartz (amethyst + citrine) and a gemstone of growing popularity.
Garnet is best known as a red gemstone. It occurs in any color and has many industrial uses.
Largest Volcano - That title is shared by Tamu Massif, Mauna Kea and Ojos del Salado.
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.
Fluorescent Minerals and rocks glow with spectacular colors under ultraviolet light.
Ruby and Sapphire
Ruby and Sapphire are the 2nd and 3rd most popular colored stones in the United States.
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.
Uses of Marble
The Uses of Marble are numerous and diverse. You will be surprised by how it is used.
Uses of Gold
The Many Uses of Gold - Unique properties make gold one of the most useful metals.
Labradorite is a feldspar mineral that sometimes exhibits an iridescent play-of-color.
Homeowners Insurance usually does not cover the most common geologic hazards.
Rhodonite - a manganese silicate used as a minor ore of manganese and as a gemstone.
Field Courses - Over 80 field courses for undergraduate geology students.
Petrified Wood is a fossil that forms when dissolved material precipitates and replaces wood.
Soapstone is a metamorphic rock with properties that make it suitable for a variety of projects.
Sliding Rocks Mystery - What causes these rocks to slide across a playa in Death Valley?
Mineraloids are amorphous naturally-occurring inorganic solids that lack crystallinity.
Mineral Rights - Who owns the minerals under your land? Who wants to buy them?
Ethiopian Opal - The new opal heavyweight that might give Australia a run.
What is a Geyser?
What is a Geyser? Photos and information about geysers in many parts of the world.
Azurite - Used as an ore of copper, a pigment, ornamental stone and gem material.
US Diamond Mines
US Diamond Mines - Did you know that diamonds have been mined in the United States?
Diamond Production leaders include: Botswana, Russia, Angola and Canada.
What is a Maar?
What is a Maar? The second most common volcanic landscape feature on Earth.
Herkimer Diamonds Doubly-terminated quartz crystals used as specimens and gems.
Eagle Ford Shale
Eagle Ford Shale - One of the most prolific oil and gas producers in the United States.
Rhyolite An extrusive igneous rock with a high silica content, produced from granitic magma.
Facts About Copper
Facts About Copper - Information about copper uses, production, resources and more.
Methane Hydrate deposits contain more fuel value than all other fossil fuels combined.
Sand is a diverse material. This gallery includes photos of sand from around the world.
Tallest Mountain - Everest has rivals in tallness, altitude and distance to the center of Earth.
Tourmaline - the most colorful mineral and natural gem material on Earth.
Peridotite is a chromite host rock, a source of diamonds and a possible carbon dioxide sink.
Tanzanite was unknown until a few decades ago but it has erupted into wide popularity.
Horizontal Drilling has opened new resources and significantly improved productivity.
What are Glaciers?
What are Glaciers? Learn how glaciers form, flow, advance, retreat, and change over time.
Hematite - The most important ore of iron. A source of mineral pigment since prehistory.
100+ Gems - Photos of over 100 beautiful gems ranging from the popular to the obscure.
Azurite Granite ? A white granite with blue orbs of azurite. A new material from Pakistan.
Zircon is the primary ore of zirconium and a gemstone that is available in many colors.
Mount Vesuvius - geology, history, maps, facts and more about the Vesuvius eruptions.
Shale - The rock that has quickly transformed the oil and gas industry.
Sunstone - A gem feldspar with aventurescence caused by light reflecting from platy inclusions.
Mohs Hardness Scale is a set of reference minerals used for classroom hardness testing.
Range of Bear Species - Where you might encounter different types of bears.
Kyanite is a metamorphic mineral used to make porcelain, abrasive products and gems.
Pavlof Volcano - one of the most active volcanoes in North America and a threat to air traffic.
Dowsing is a method used to find underground water that is rejected by most geologists.
Watch out for Ticks!
Ticks are a problem for geologists in some areas. Learn to recognize and avoid them.
California Earthquake Maps - A collection of isoseismal maps for earthquakes in California.
Pictures of Opal - A collection of different types of opal from all around the world and Mars too!
Hydraulic Fracturing increases well yield by fracturing the reservoir rock with fluid injection.
Largest Earthquake ever recorded - Magnitude 9.5. Chile, 1960.
Corundum is the third hardest mineral. It is also the mineral of ruby and sapphire.
Mount Etna - The most active volcano in Europe continues an eruption that started in 2001.
Mount Cleveland is an active volcano in the Aleutian Islands and a threat to air traffic.
Rhodochrosite - a manganese mineral used as an ore, a pink gem and an ornamental stone.
Olivine - Abundant in Earth*s mantle. A constituent of meteorites. The gem peridot.
Life on Europa?
Life on Europa could exist in a salty ocean deep below its frozen surface.
Turquoise - A bluish-green gem material that has been used for over 6000 years.
Fee Mining Sites
Fee Mining sites are mines that you can enter, pay a fee, and keep anything that you find.
Plate Tectonics - Articles and maps about plate tectonics and the interior of Earth.
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.