Geology and Earth Science News and Information

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

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.

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?

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

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

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.

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

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

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.

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

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.

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

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

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

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

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.

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

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

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

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.

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

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

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

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

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

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.

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

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

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

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

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

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

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

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

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

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

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

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

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.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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.

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

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

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

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

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

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

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

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

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

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

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

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

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

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?

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.

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

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

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.

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

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

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

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

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

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.

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

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

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

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

Tourmaline - an extremely colorful mineral and gem material.

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

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

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.

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

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

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

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

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.