Geology and Earth Science News and Information
Crater of Diamonds
Crater of Diamonds - The only diamond mine in the world where you can be the miner.
Gems from Space
Extraterrestrial Gems - A number of materials from space are used as attractive gems.
Landslides A USGS fact sheet about landslides and events that trigger them.
Wall Maps - Wall maps of the world, continents, states and the USA.
Mount Cleveland is an active volcano in the Aleutian Islands and a threat to air traffic.
Rock and Mineral Kits
Rock & Mineral Kits The best way to learn about rocks and minerals is with specimens!
Molybdenite is the primary ore of molybdenum which is used in superalloys and as a lubricant.
100+ Gems - Photos of over 100 beautiful gems ranging from the popular to the obscure.
World Record Lightning - this lake has more lightning than any other place in the world.
Don*t Go To Jail
Know the Rules before removing rocks, fossils or minerals from public or private property.
Fire Opal is a transparent to translucent opal with a yellow, orange or red background color.
Rocks - Galleries of igneous, sedimentary and metamorphic rock photos with descriptions.
Hardness Picks - Test for hardness with precise and easy-to-use hardness picks.
Chalk is a variety of limestone formed from fine-grained marine sediment known as ooze.
Ilmenite - The primary ore of titanium and source of most titanium dioxide.
Quartzite is metamorphic rock formed when sandstone is subjected to heat and pressure.
What is Geology?
What is Geology? The study of Earth materials, structures, processes and life over time.
Google Earth - Free
Free Google Earth software allows you to browse seamless world satellite images. Free.
Types Of Eruptions
Types of Volcanic Eruptions - A description of the most common eruption types.
Zircon is the primary ore of zirconium and a gemstone that is available in many colors.
Hydraulic Fracturing increases well yield by fracturing the reservoir rock with fluid injection.
Diamonds - Learn about the properties of diamond, its many uses, and diamond discoveries.
Topo Maps - The DeLorme Atlas is an entire state of topo maps in one convenient book.
Geology Tools Rock hammers, field bags, hand lenses, maps, hardness picks, gold pans.
The Brewery Rock ?
The Rock Used to Make Beer - Geologists are beer experts and should know about this rock.
Plate Tectonics - Articles and maps about plate tectonics and the interior of Earth.
Geology Dictionary - contains thousands of geological terms with their definitions.
Mohs Hardness Scale is a set of reference minerals used for classroom hardness testing.
The Acid Test
The Acid Test - Geologists use dilute hydrochloric acid to identify carbonate minerals.
What Is Earth Science?
What Is Earth Science? The study of Earth and its neighbors in space. Learn more!
Fool*s Gold is a name used for pyrite when its brassy color fools people looking for gold.
Labradorite is a feldspar mineral that sometimes exhibits an iridescent play-of-color.
How Are Hurricanes Named? There is a plan for naming tropical storms.
Meteorites - Rocks that were once parts of planets or large asteroids.
Homeowners Insurance might not cover earthquake, hurricane and other geohazard damage.
Obsidian - the volcanic rock that cools so quickly that it becomes a natural glass.
Geodes look like ordinary rocks on the outside but can be spectacular inside!
The Next Hawaiian Island could be growing in the Pacific Ocean right now. Its name is Lo'ihi.
Minerals - Descriptions, photos, articles, properties and uses for common minerals.
Largest Hurricanes Are they determined by wind speed, value of damage, most deaths?
Blue Flames and the largest highly acidic lake in the world at Kawah Ijen Volcano.
Teacher Resources - K-12 resources for teaching about earth science.
Fluorescent Minerals and rocks glow with spectacular colors under ultraviolet light.
Gem Silica is a blue chalcedony colored by copper. It is the rarest and most valuable chalcedony.
Sand is a diverse material. This gallery includes photos of sand from around the world.
Hand Lens A 10-power folding magnifier in a metal case. A frequently used lab and field tool.
Bear Attacks - Knowing how to react to a bear encounter or attack could save your life.
The Unsung Mineral Hero - and the commodity upon which almost everything is built.
Volcanic Explosivity - Rating volcanic eruptions based upon the volume of tephra ejected.
San Andreas Fault
What is the San Andreas Fault? Map, photos and description of the fault.
Ethiopian Opal - The new opal heavyweight that might give Australia a run.
World*s Largest Diamonds Records for the largest rough, faceted and carbonado diamond.
What is a Maar?
What is a Maar? The second most common volcanic landscape feature on Earth.
Waterproof Paper - Don't take chances with your field notes and maps. Use waterproof paper.
Petrified Wood is a fossil that forms when silica replaces and infills the cavities of wood.
Geology Books - A variety of books for reference, field trips, reading and more.
Olivine - Abundant in Earth*s mantle. A constituent of meteorites. The gem peridot.
Gemstones - Colorful images and articles about diamonds and colored stones.
Uses of Talc
Talc is a soft mineral used in cosmetics, paper, paint, ceramics and many other products.
Granite - The intrusive igneous rock that underlies continents and countertops.
Moldavite is a gem material born about 15 million years ago when a pair of asteroids struck Europe.
Sliding Rocks Mystery - What causes these rocks to slide across a playa in Death Valley?
Rock Tumblers - All about rock tumblers and rock tumbling. Read before you buy a tumbler.
Mined in America - Small mines in the United States produce a diversity of beautiful gemstones.
Cave of the Hands
Cave of the Hands is a cave where ancient people painted hands about 9000 years ago.
Largest Earthquake ever recorded - Magnitude 9.5. Chile, 1960.
Turquoise - A bluish-green gem material that has been used for over 6000 years.
Geology of Helium
Helium is a byproduct of the natural gas industry. Its most important use is in MRI.
Ruby and Sapphire
Ruby and Sapphire are the 2nd and 3rd most popular colored stones in the United States.
Diamond Misconception - Many people think that diamonds form from coal. Not True!
Great Rift Valley
The East Africa Rift System - The extensive fault system that is tearing Africa apart.
Expansive Soil causes more damage than floods, hurricanes & tornadoes combined.
UV Mineral Lamp
Portable UV Lamp - Short and long wave UV for fluorescent mineral viewing.
Colored Diamonds are diamonds with a noticeable body color. They can sell for over $1M/carat.
Ant Hill Garnets
Ant Hill Garnets - tiny gems that ants haul to the surface and discard on their anthill. Honest!
Shale - The rock that has quickly transformed the oil and gas industry.
Green Diamonds - one of rarest and most valuable diamond colors.
June 6, 1912 - The most powerful volcanic eruption of the 20th century occurred in Alaska.
What Is The Moho?
What Is The Moho? The Mohorovicic Discontinuity is the mantle/crust boundary.
Arctic Seafloor Map
Arctic Ocean Seafloor Map - The ridges, basins, shelves and rifts defining the Arctic seafloor.
Field Courses - Over 80 field courses for undergraduate geology students.
Uses of Marble
The Uses of Marble are numerous and diverse. You will be surprised by how it is used.
What is a Geyser?
What is a Geyser? Photos and information about geysers in many parts of the world.
Largest Volcano - That title is shared by Tamu Massif, Mauna Kea and Ojos del Salado.
Facts About Copper
Facts About Copper - Information about copper uses, production, resources and more.
Tanzanite was unknown until a few decades ago but it has erupted into wide popularity.
Herkimer Diamonds Doubly-terminated quartz crystals used as specimens and gems.
Storm Surge can be the most damaging and deadly aspect of a hurricane.
Soapstone is a metamorphic rock with properties that make it suitable for a variety of projects.
Debris Flows are moving masses of loose mud, sand, soil, rock and water.
Watch out for Ticks!
Ticks are a problem for geologists in some areas. Learn to recognize and avoid them.
Lightning Strikes Map
Lightning Strikes Map by NASA shows the worldwide distribution of lightning activity.
Variscite is a yellowish green to bluish green mineral. It is similar to turquoise and cut as a gem.
US Diamond Mines
US Diamond Mines - Did you know that diamonds have been mined in the United States?
Mineraloids are amorphous naturally-occurring inorganic solids that lack crystallinity.
Mount Etna - The most active volcano in Europe continues an eruption that started in 2001.
Tallest Mountain - Everest has rivals in tallness, altitude and distance to the center of Earth.
Chalcopyrite - The most important ore of copper for over five thousand years.
Volcanoes - Articles about volcanoes, volcanic hazards and eruptions past and present.
Sunstone - A gem feldspar with aventurescence caused by light reflecting from platy inclusions.
Rare Earth Elements
Rare Earths - Special materials used in electronics, defense, medical & many other products.
Corundum is the third hardest mineral. It is also the mineral of ruby and sapphire.
Hawaiian Hot Spot
How did the Hawaiian Islands Form? The power of a moving plate over a stationary hot spot.
Kyanite is a metamorphic mineral used to make porcelain, abrasive products and gems.
Coquina - A porous limestone composed almost entirely of fossil debris.
Solar System Volcanoes - Earth is not the only location of volcanic activity.
Lapis Lazuli - a metamorphic rock and the most popular blue opaque gemstone in history.
Tourmaline - an extremely colorful mineral and gem material.
Oil Fields from Space
Oil Fields from Space - Night views of Earth show the distribution of oil field activity.
Mount Vesuvius - geology, history, maps, facts and more about the Vesuvius eruptions.
What is LNG?
What is LNG? The use of LNG as an energy source is growing rapidly. Learn more about LNG.
Abandoned Mine Accidents kill several people every year. Education can prevent deaths.
Frac Sand - A specialty sand used to maintain porosity in hydraulic fracturing.
Peridotite is a chromite host rock, a source of diamonds and a possible carbon dioxide sink.
Salt Domes - Salt structures that are often associated with oil and natural gas accumulations.
Rock-Forming Minerals - most of Earth*s crust is made-up of a small number of minerals.
The British Isles
Names Used for Great Britain, British Isles, United Kingdom, and Ireland. What they mean.
Garnet is best known as a red gemstone. It occurs in any color and has many industrial uses.
Tallest Tsunami - A wave with a run-up height of 1720 feet occurred in Lituya Bay, Alaska.
Rhyolite An extrusive igneous rock with a high silica content, produced from granitic magma.
Coal Close Up
Coal Through a Microscope - Coal is more than a black rock. It is THE most interesting rock.
Horizontal Drilling has opened new resources and significantly improved productivity.
Range of Bear Species - Where you might encounter different types of bears.
Eagle Ford Shale
Eagle Ford Shale - One of the most prolific oil and gas producers in the United States.
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!
Utica Shale is a major source of oil, natural gas and natural gas liquids in PA, OH and WV.
Emerald is the most popular green gemstone in the United States and most of the world.
Hematite - The most important ore of iron. A source of mineral pigment since prehistory.
Uses of Gold
The Many Uses of Gold - Unique properties make gold one of the most useful metals.
Azurite - Used as an ore of copper, a pigment, ornamental stone and gem material.
Gold Pans and Panning Kits - classifiers, snuffer bottles. Learn how to pan for Gold.
Rhodochrosite - a manganese mineral used as an ore, a pink gem and an ornamental stone.
Rock Art - People have been marking on rocks for thousands of years.
Diamond Production leaders include: Botswana, Russia, Angola and Canada.
Methane Hydrate deposits contain more fuel value than all other fossil fuels combined.