Geology and Earth Science News and Information

Range of Bear Species - Where you might encounter different types of bears.

Emerald is the most popular green gemstone in the United States and most of the world.

Ticks are a problem for geologists in some areas. Learn to recognize and avoid them.

Sand is a diverse material. This gallery includes photos of sand from around the world.

Peridotite is a chromite host rock, a source of diamonds and a possible carbon dioxide sink.

Mineral Rights - Who owns the minerals under your land? Who wants to buy them?

Geology.com News contains news about geology and earth science from around the world.

The Uses of Marble are numerous and diverse. You will be surprised by how it is used.

Hand Lens A 10-power folding magnifier in a metal case. A frequently used lab and field tool.

How Are Hurricanes Named? There is a plan for naming tropical storms.

Mount Vesuvius - geology, history, maps, facts and more about the Vesuvius eruptions.

Garnet is best known as a red gemstone. It occurs in any color and has many industrial uses.

Obsidian - the volcanic rock that cools so quickly that it becomes a natural glass.

Fluorescent Minerals and rocks glow with spectacular colors under ultraviolet light.

Minerals - Descriptions, photos, articles, properties and uses for common minerals.

Hardness Picks - Mohs hardness testing with precise and easy-to-use hardness picks.

Hydraulic Fracturing increases well yield by fracturing the reservoir rock with fluid injection.

Blue Flames and the largest highly acidic lake in the world at Kawah Ijen Volcano.

The Rock Used to Make Beer - Geologists are beer experts and should know about this rock.

Zircon is the primary ore of zirconium and a gemstone that is available in many colors.

Green Diamonds - one of rarest and most valuable diamond colors.

Bear Attacks - Knowing how to react to a bear encounter or attack could save your life.

Granite - The intrusive igneous rock that underlies continents and countertops.

Rocks - Galleries of igneous, sedimentary and metamorphic rock photos with descriptions.

Know the Rules before removing rocks, fossils or minerals from public or private property.

Geology Tools Rock hammers, field bags, hand lenses, maps, hardness picks, gold pans.

What Is The Moho? The Mohorovicic Discontinuity is the mantle/crust boundary.

Lapis Lazuli - a metamorphic rock and the most popular blue opaque gemstone in history.

What Is Earth Science? The study of Earth and its neighbors in space. Learn more!

Quartzite is metamorphic rock formed when sandstone is subjected to heat and pressure.

Ammolite is a fossil and a gemstone. It is shell material from fossil ammonites.

Wall Maps - Wall maps of the world, continents, states and the USA.

Types of Volcanic Eruptions - A description of the most common eruption types.

What is Geology? The study of Earth materials, structures, processes and life over time.

Homeowners Insurance usually does not cover the most common geologic hazards.

Geology Books - A variety of books for reference, field trips, reading and more.

Ant Hill Garnets - tiny gems that ants haul to the surface and discard on their anthill. Honest!

Oil Fields from Space - Night views of Earth show the distribution of oil field activity.

Geodes look like ordinary rocks on the outside but can be spectacular inside!

Mount Cleveland is an active volcano in the Aleutian Islands and a threat to air traffic.

Free Google Earth software allows you to browse seamless world satellite images. Free.

100+ Gems - Photos of over 100 beautiful gems ranging from the popular to the obscure.

Landslides A USGS fact sheet about landslides and events that trigger them.

Meteorites - Rocks that were once parts of planets or large asteroids.

Volcanoes - Articles about volcanoes, volcanic hazards and eruptions past and present.

The Acid Test - Geologists use dilute hydrochloric acid to identify carbonate minerals.

Frac Sand - A specialty sand used to maintain porosity in hydraulic fracturing.

Topo Maps - The DeLorme Atlas is an entire state of topo maps in one convenient book.

Rock & Mineral Kits The best way to learn about rocks and minerals is with specimens!

Mount Etna - The most active volcano in Europe continues an eruption that started in 2001.

Talc is a soft mineral used in cosmetics, paper, paint, ceramics and many other products.

Ilmenite - The primary ore of titanium and source of most titanium dioxide.

Coal Through a Microscope - Coal is more than a black rock. It is THE most interesting rock.

Tallest Tsunami - A wave with a run-up height of 1720 feet occurred in Lituya Bay, Alaska.

Abandoned Mine Accidents kill several people every year. Education can prevent deaths.

Rare Earths - Special materials used in electronics, defense, medical & many other products.

Largest Earthquake ever recorded - Magnitude 9.5. Chile, 1960.

Rhyolite An extrusive igneous rock with a high silica content, produced from granitic magma.

Portable UV Lamp - Short and long wave UV for fluorescent mineral viewing.

Extraterrestrial Gems - A number of materials from space are used as attractive gems.

Spectacular Diamonds have an exceptional size, color, clarity, crystal form or other property.

Gem Silica is a blue chalcedony colored by copper. It is the rarest and most valuable chalcedony.

The East Africa Rift System - The extensive fault system that is tearing Africa apart.

Asteroid Impact Map - Explore fifty of the most obvious asteroid impact craters on Earth.

Crater of Diamonds - The only diamond mine in the world where you can be the miner.

Volcanic Explosivity - Rating volcanic eruptions based upon the volume of tephra ejected.

Gold Pans and Panning Kits - classifiers, snuffer bottles. Learn how to pan for Gold.

Mohs Hardness Scale is a set of reference minerals used for classroom hardness testing.

World Record Lightning - this lake has more lightning than any other place in the world.

Fire Opal is a transparent to translucent opal with a yellow, orange or red background color.

Expansive Soil causes more damage than floods, hurricanes & tornadoes combined.

Soapstone is a metamorphic rock with properties that make it suitable for a variety of projects.

Waterproof Paper - Don't take chances with your field notes and maps. Use waterproof paper.

Teacher Resources - K-12 resources for teaching about earth science.

Shale - The rock that has quickly transformed the oil and gas industry.

Diamonds - Learn about the properties of diamond, its many uses, and diamond discoveries.

Crushed Stone - About four tons per person is used each year in the United States.

The Many Uses of Gold - Unique properties make gold one of the most useful metals.

Dowsing is a method used to find underground water that is rejected by most geologists.

Field Courses - Over 80 field courses for undergraduate geology students.

Debris Flows are moving masses of loose mud, sand, soil, rock and water.

US Diamond Mines - Did you know that diamonds have been mined in the United States?

Diamond Misconception - Many people think that diamonds form from coal. Not True!

Rhodonite - a manganese silicate used as a minor ore of manganese and as a gemstone.

Kyanite is a metamorphic mineral used to make porcelain, abrasive products and gems.

What is a Geyser? Photos and information about geysers in many parts of the world.

Tallest Mountain - Everest has rivals in tallness, altitude and distance to the center of Earth.

The Richest Meteorite Field - More meteorites found here than anywhere else on Earth.

Rock Art - People have been marking on rocks for thousands of years.

Olivine - Abundant in Earth*s mantle. A constituent of meteorites. The gem peridot.

Ethiopian Opal - The new opal heavyweight that might give Australia a run.

What is LNG? The use of LNG as an energy source is growing rapidly. Learn more about LNG.

Corundum is the third hardest mineral. It is also the mineral of ruby and sapphire.

Ruby and Sapphire are the 2nd and 3rd most popular colored stones in the United States.

Labradorite is a feldspar mineral that sometimes exhibits an iridescent play-of-color.

Rock Tumblers - All about rock tumblers and rock tumbling. Read before you buy a tumbler.

Chalcopyrite - The most important ore of copper for over five thousand years.

Moldavite is a gem material born about 15 million years ago when a pair of asteroids struck Europe.

Diamond Production leaders include: Botswana, Russia, Angola and Canada.

Gemstones - Colorful images and articles about diamonds and colored stones.

Helium is a byproduct of the natural gas industry. Its most important use is in MRI.

Sliding Rocks Mystery - What causes these rocks to slide across a playa in Death Valley?

June 6, 1912 - The most powerful volcanic eruption of the 20th century.

Largest Hurricanes Are they determined by wind speed, value of damage, most deaths?

Facts About Copper - Information about copper uses, production, resources and more.

Herkimer Diamonds Doubly-terminated quartz crystals used as specimens and gems.

Turquoise - A bluish-green gem material that has been used for over 6000 years.

Troglobites are creatures that have adapted to a permanent life in the darkness of a cave.

Azurite - Used as an ore of copper, a pigment, ornamental stone and gem material.

Google Map of the San Andreas Fault - Zoom in to see the fault trace on satellite images.

Rhodochrosite - a manganese mineral used as an ore, a pink gem and an ornamental stone.

Largest Volcano - That title is shared by Tamu Massif, Mauna Kea and Ojos del Salado.

Tanzanite was unknown until a few decades ago but it has erupted into wide popularity.

Hematite - The most important ore of iron. A source of mineral pigment since prehistory.

Variscite is a yellowish green to bluish green mineral. It is similar to turquoise and cut as a gem.

Lightning Strikes Map by NASA shows the worldwide distribution of lightning activity.

Canada is one of the world*s leading producers of gem-quality diamonds.

Sunstone - A gem feldspar with aventurescence caused by light reflecting from platy inclusions.

Petrified Wood is a fossil that forms when silica replaces and infills the cavities of wood.

Arctic Ocean Seafloor Map - The ridges, basins, shelves and rifts defining the Arctic seafloor.

Azurite Granite ? A white granite with blue orbs of azurite. A new material from Pakistan.

Mineraloids are amorphous naturally-occurring inorganic solids that lack crystallinity.

Tourmaline - an extremely colorful mineral and gem material.

Cave of the Hands is a cave where ancient people painted hands about 9000 years ago.

Pavlof Volcano - one of the most active volcanoes in North America and a threat to air traffic.

Eagle Ford Shale - One of the most prolific oil and gas producers in the United States.

What is a Maar? The second most common volcanic landscape feature on Earth.

Ametrine is a bicolor quartz (amethyst + citrine) and a gemstone of growing popularity.

Horizontal Drilling has opened new resources and significantly improved productivity.

California Earthquake Maps - A collection of isoseismal maps for earthquakes in California.

Life on Europa could exist in a salty ocean deep below its frozen surface.

What are Glaciers? Learn how glaciers form, flow, advance, retreat, and change over time.

Salt Domes - Salt structures that are often associated with oil and natural gas accumulations.

Methane Hydrate deposits contain more fuel value than all other fossil fuels combined.

Utica Shale is confirmed as a major source of oil, natural gas and natural gas liquids.

Plate Tectonics - Articles and maps about plate tectonics and the interior of Earth.

Fossils - Learn about fossils and discoveries around the world.

Pictures of Opal - A collection of different types of opal from all around the world and Mars too!

Oil and Gas - Articles about oil and natural gas in the US and around the world.