Geology and Earth Science News and Information
Gifts that Rock! Find something for the rockhound on your holiday shopping list.
Crater of Diamonds
Crater of Diamonds - The only diamond mine in the world where you can be the miner.
Mineraloids are amorphous naturally-occurring inorganic solids that lack crystallinity.
Azurite Granite ? A white granite with blue orbs of azurite. A new material from Pakistan.
Geology.com News contains news about geology and earth science from around the world.
Ethiopian Opal - The new opal heavyweight that might give Australia a run.
Rocks - Galleries of igneous, sedimentary and metamorphic rock photos with descriptions.
Minerals - Descriptions, photos, articles, properties and uses for common minerals.
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.
Eagle Ford Shale
Eagle Ford Shale - One of the most prolific oil and gas producers in the United States.
What are Glaciers?
What are Glaciers? Learn how glaciers form, flow, advance, retreat, and change over time.
Herkimer Diamonds Doubly-terminated quartz crystals used as specimens and gems.
Sunstone - A gem feldspar with aventurescence caused by light reflecting from platy inclusions.
Shale - The rock that has quickly transformed the oil and gas industry.
Expansive Soil causes more damage than floods, hurricanes & tornadoes combined.
Petrified Wood is a fossil that forms when silica replaces and infills the cavities of wood.
Great Rift Valley
The East Africa Rift System - The extensive fault system that is tearing Africa apart.
Ruby and Sapphire
Ruby and Sapphire are the 2nd and 3rd most popular colored stones in the United States.
Sea Level Rise Maps
Sea Level Rise Maps - See what will be flooded as sea level rises.
Horizontal Drilling has opened new resources and significantly improved productivity.
100+ Gems - Photos of over 100 beautiful gems ranging from the popular to the obscure.
Sand is a diverse material. This gallery includes photos of sand from around the world.
Olivine - Abundant in Earth*s mantle. A constituent of meteorites. The gem peridot.
San Andreas Fault Map
Google Map of the San Andreas Fault - Zoom in to see the fault trace on satellite images.
Dowsing is a method used to find underground water that is rejected by most geologists.
What is a Maar?
What is a Maar? The second most common volcanic landscape feature on Earth.
Emerald is the most popular green gemstone in the United States and most of the world.
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.
Obsidian - the volcanic rock that cools so quickly that it becomes a natural glass.
Canada is one of the world*s leading producers of gem-quality diamonds.
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.
Cave of the Hands
Cave of the Hands is a cave where ancient people painted hands about 9000 years ago.
Labradorite is a feldspar mineral that sometimes exhibits an iridescent play-of-color.
Life on Europa?
Life on Europa could exist in a salty ocean deep below its frozen surface.
US Diamond Mines
US Diamond Mines - Did you know that diamonds have been mined in the United States?
Google Earth - Free
Free Google Earth software allows you to browse seamless world satellite images. Free.
Kyanite is a metamorphic mineral used to make porcelain, abrasive products and gems.
Tanzanite was unknown until a few decades ago but it has erupted into wide popularity.
Blue Flames and the largest highly acidic lake in the world at Kawah Ijen Volcano.
Don*t Go To Jail
Know the Rules before removing rocks, fossils or minerals from public or private property.
Meteorites - Rocks that were once parts of planets or large asteroids.
Lightning Strikes Map
Lightning Strikes Map by NASA shows the worldwide distribution of lightning activity.
Rock and Mineral Kits
Rock & Mineral Kits The best way to learn about rocks and minerals is with specimens!
Gemstones - Colorful images and articles about diamonds and colored stones.
Turquoise - A bluish-green gem material that has been used for over 6000 years.
Diamonds - Learn about the properties of diamond, its many uses, and diamond discoveries.
Volcanoes - Articles about volcanoes, volcanic hazards and eruptions past and present.
Azurite - Used as an ore of copper, a pigment, ornamental stone and gem material.
The Brewery Rock ?
The Rock Used to Make Beer - Geologists are beer experts and should know about this rock.
Facts About Copper
Facts About Copper - Information about copper uses, production, resources and more.
Corundum is the third hardest mineral. It is also the mineral of ruby and sapphire.
What is Geology?
What is Geology? The study of Earth materials, structures, processes and life over time.
Tourmaline - an extremely colorful mineral and gem material.
Geodes look like ordinary rocks on the outside but can be spectacular inside!
Ant Hill Garnets
Ant Hill Garnets - tiny gems that ants haul to the surface and discard on their anthill. Honest!
Granite - The intrusive igneous rock that underlies continents and countertops.
Largest Hurricanes Are they determined by wind speed, value of damage, most deaths?
Bear Attacks - Knowing how to react to a bear encounter or attack could save your life.
What Is The Moho?
What Is The Moho? The Mohorovicic Discontinuity is the mantle/crust boundary.
Field Courses - Over 80 field courses for undergraduate geology students.
Diamond Misconception - Many people think that diamonds form from coal. Not True!
Homeowners Insurance usually does not cover the most common geologic hazards.
Wall Maps - Wall maps of the world, continents, states and the USA.
Lapis Lazuli - a metamorphic rock and the most popular blue opaque gemstone in history.
Sliding Rocks Mystery - What causes these rocks to slide across a playa in Death Valley?
Mohs Hardness Scale is a set of reference minerals used for classroom hardness testing.
Waterproof Paper - Don't take chances with your field notes and maps. Use waterproof paper.
Rock Tumblers - All about rock tumblers and rock tumbling. Read before you buy a tumbler.
Tallest Mountain - Everest has rivals in tallness, altitude and distance to the center of Earth.
Rhyolite An extrusive igneous rock with a high silica content, produced from granitic magma.
Yosemite Rock Fall - Photo sequence of a 2006 rockfall and debris avalanche by Herb Dunn.
Quartzite is metamorphic rock formed when sandstone is subjected to heat and pressure.
Geology Tools Rock hammers, field bags, hand lenses, maps, hardness picks, gold pans.
Fluorescent Minerals and rocks glow with spectacular colors under ultraviolet light.
Frac Sand - A specialty sand used to maintain porosity in hydraulic fracturing.
Hardness Picks - Mohs hardness testing with precise and easy-to-use hardness picks.
Asteroid Impact Map
Asteroid Impact Map - Explore fifty of the most obvious asteroid impact craters on Earth.
Ammolite is a fossil and a gemstone. It is shell material from fossil ammonites.
Chalcopyrite - The most important ore of copper for over five thousand years.
Soapstone is a metamorphic rock with properties that make it suitable for a variety of projects.
Types Of Eruptions
Types of Volcanic Eruptions - A description of the most common eruption types.
Peridotite is a chromite host rock, a source of diamonds and a possible carbon dioxide sink.
Geology Books - A variety of books for reference, field trips, reading and more.
How Are Hurricanes Named? There is a plan for naming tropical storms.
Rare Earth Elements
Rare Earths - Special materials used in electronics, defense, medical & many other products.
Uses of Marble
The Uses of Marble are numerous and diverse. You will be surprised by how it is used.
Garnet is best known as a red gemstone. It occurs in any color and has many industrial uses.
What Is Earth Science?
What Is Earth Science? The study of Earth and its neighbors in space. Learn more!
The Acid Test
The Acid Test - Geologists use dilute hydrochloric acid to identify carbonate minerals.
Gem Silica is a blue chalcedony colored by copper. It is the rarest and most valuable chalcedony.
Teacher Resources - K-12 resources for teaching about earth science.
Mount Etna - The most active volcano in Europe continues an eruption that started in 2001.
Crushed Stone - About four tons per person is used each year in the United States.
Fire Opal is a transparent to translucent opal with a yellow, orange or red background color.
June 6, 1912
June 6, 1912 - The most powerful volcanic eruption of the 20th century.
Rhodonite - a manganese silicate used as a minor ore of manganese and as a gemstone.
Tallest Tsunami - A wave with a run-up height of 1720 feet occurred in Lituya Bay, Alaska.
Hand Lens A 10-power folding magnifier in a metal case. A frequently used lab and field tool.
Volcanic Explosivity - Rating volcanic eruptions based upon the volume of tephra ejected.
Largest Volcano - That title is shared by Tamu Massif, Mauna Kea and Ojos del Salado.
Mount Cleveland is an active volcano in the Aleutian Islands and a threat to air traffic.
Moldavite is a gem material born about 15 million years ago when a pair of asteroids struck Europe.
Gold Pans and Panning Kits - classifiers, snuffer bottles. Learn how to pan for Gold.
World Record Lightning - this lake has more lightning than any other place in the world.
California Earthquake Maps - A collection of isoseismal maps for earthquakes in California.
UV Mineral Lamp
Portable UV Lamp - Short and long wave UV for fluorescent mineral viewing.
Gems from Space
Extraterrestrial Gems - A number of materials from space are used as attractive gems.
Oil Fields from Space
Oil Fields from Space - Night views of Earth show the distribution of oil field activity.
Mineral Rights - Who owns the minerals under your land? Who wants to buy them?
Zircon is the primary ore of zirconium and a gemstone that is available in many colors.
Coal Close Up
Coal Through a Microscope - Coal is more than a black rock. It is THE most interesting rock.
Range of Bear Species - Where you might encounter different types of bears.
Uses of Gold
The Many Uses of Gold - Unique properties make gold one of the most useful metals.
Geology of Helium
Helium is a byproduct of the natural gas industry. Its most important use is in MRI.
Troglobites are creatures that have adapted to a permanent life in the darkness of a cave.
Uses of Talc
Talc is a soft mineral used in cosmetics, paper, paint, ceramics and many other products.
Mount Vesuvius - geology, history, maps, facts and more about the Vesuvius eruptions.
Utica Shale is confirmed as a major source of oil, natural gas and natural gas liquids.
Ametrine is a bicolor quartz (amethyst + citrine) and a gemstone of growing popularity.
Salt Domes - Salt structures that are often associated with oil and natural gas accumulations.
Pavlof Volcano - one of the most active volcanoes in North America and a threat to air traffic.
Watch out for Ticks!
Ticks are a problem for geologists in some areas. Learn to recognize and avoid them.
Hydraulic Fracturing increases well yield by fracturing the reservoir rock with fluid injection.
The Richest Meteorite Field - More meteorites found here than anywhere else on Earth.
Topo Maps - The DeLorme Atlas is an entire state of topo maps in one convenient book.
What is LNG?
What is LNG? The use of LNG as an energy source is growing rapidly. Learn more about LNG.
Arctic Seafloor Map
Arctic Ocean Seafloor Map - The ridges, basins, shelves and rifts defining the Arctic seafloor.
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.
Largest Earthquake ever recorded - Magnitude 9.5. Chile, 1960.
Pictures of Opal - A collection of different types of opal from all around the world and Mars too!