Geology and Earth Science News and Information
Debris Flows are moving masses of loose mud, sand, soil, rock and water.
Gem Silica is a blue chalcedony colored by copper. It is the rarest and most valuable chalcedony.
Mohs Hardness Scale is a set of reference minerals used for classroom hardness testing.
Rock and Mineral Kits
Rock & Mineral Kits The best way to learn about rocks and minerals is with specimens!
Meteorites - Rocks that were once parts of planets or large asteroids.
Geology.com News contains news about geology and earth science from around the world.
Rhodonite - a manganese silicate used as a minor ore of manganese and as a gemstone.
Hardness Picks - Mohs hardness testing with precise and easy-to-use hardness picks.
Volcanic Explosivity - Rating volcanic eruptions based upon the volume of tephra ejected.
Rocks - Galleries of igneous, sedimentary and metamorphic rock photos with descriptions.
Moldavite is a gem material born about 15 million years ago when a pair of asteroids struck Europe.
Wall Maps - Wall maps of the world, continents, states and the USA.
Gems from Space
Extraterrestrial Gems - A number of materials from space are used as attractive gems.
Minerals - Descriptions, photos, articles, properties and uses for common minerals.
Soapstone is a metamorphic rock with properties that make it suitable for a variety of projects.
Solar System Volcanoes - Earth is not the only location of volcanic activity.
Geodes look like ordinary rocks on the outside but can be spectacular inside!
Geology Tools Rock hammers, field bags, hand lenses, maps, hardness picks, gold pans.
Arctic Seafloor Map
Arctic Ocean Seafloor Map - The ridges, basins, shelves and rifts defining the Arctic seafloor.
Utica Shale is confirmed as a major source of oil, natural gas and natural gas liquids.
Geology Dictionary - contains thousands of geological terms with their definitions.
Ethiopian Opal - The new opal heavyweight that might give Australia a run.
Google Earth - Free
Free Google Earth software allows you to browse seamless world satellite images. Free.
Topo Maps - The DeLorme Atlas is an entire state of topo maps in one convenient book.
Fool*s Gold is a name used for pyrite when its brassy color fools people looking for gold.
Troglobites are creatures that have adapted to a permanent life in the darkness of a cave.
Obsidian - the volcanic rock that cools so quickly that it becomes a natural glass.
The Richest Meteorite Field - More meteorites found here than anywhere else on Earth.
100+ Gems - Photos of over 100 beautiful gems ranging from the popular to the obscure.
How Are Hurricanes Named? There is a plan for naming tropical storms.
Crater of Diamonds
Crater of Diamonds - The only diamond mine in the world where you can be the miner.
Sliding Rocks Mystery - What causes these rocks to slide across a playa in Death Valley?
Fluorescent Minerals and rocks glow with spectacular colors under ultraviolet light.
The Brewery Rock ?
The Rock Used to Make Beer - Geologists are beer experts and should know about this rock.
Geology Books - A variety of books for reference, field trips, reading and more.
What Is The Moho?
What Is The Moho? The Mohorovicic Discontinuity is the mantle/crust boundary.
Ammolite is a fossil and a gemstone. It is shell material from fossil ammonites.
Granite - The intrusive igneous rock that underlies continents and countertops.
United States Gemstones Small mines in the U.S. produce a diversity of gemstones.
Largest Earthquake ever recorded - Magnitude 9.5. Chile, 1960.
What Is Earth Science?
What Is Earth Science? The study of Earth and its neighbors in space. Learn more!
Diamonds - Learn about the properties of diamond, its many uses, and diamond discoveries.
Gemstones - Colorful images and articles about diamonds and colored stones.
Spectacular Diamonds have an exceptional size, color, clarity, crystal form or other property.
Tallest Tsunami - A wave with a run-up height of 1720 feet occurred in Lituya Bay, Alaska.
Don*t Go To Jail
Know the Rules before removing rocks, fossils or minerals from public or private property.
Ruby and Sapphire
Ruby and Sapphire are the 2nd and 3rd most popular colored stones in the United States.
Bear Attacks - Knowing how to react to a bear encounter or attack could save your life.
Labradorite is a feldspar mineral that sometimes exhibits an iridescent play-of-color.
Quartzite is metamorphic rock formed when sandstone is subjected to heat and pressure.
Green Diamonds - one of rarest and most valuable diamond colors.
Cave of the Hands
Cave of the Hands is a cave where ancient people painted hands about 9000 years ago.
Volcanoes - Articles about volcanoes, volcanic hazards and eruptions past and present.
Kilauea Eruption - photos of the 2018 eruption in the East Rift Zone of Kilauea Volcano.
Uses of Gold
The Many Uses of Gold - Unique properties make gold one of the most useful metals.
Hand Lens A 10-power folding magnifier in a metal case. A frequently used lab and field tool.
Facts About Copper
Facts About Copper - Information about copper uses, production, resources and more.
Rhyolite An extrusive igneous rock with a high silica content, produced from granitic magma.
Geology of Helium
Helium is a byproduct of the natural gas industry. Its most important use is in MRI.
Blue Flames and the largest highly acidic lake in the world at Kawah Ijen Volcano.
Emerald is the most popular green gemstone in the United States and most of the world.
Expansive Soil causes more damage than floods, hurricanes & tornadoes combined.
Great Rift Valley
The East Africa Rift System - The extensive fault system that is tearing Africa apart.
Largest Hurricanes Are they determined by wind speed, value of damage, most deaths?
Dowsing is a method used to find underground water that is rejected by most geologists.
Tanzanite was unknown until a few decades ago but it has erupted into wide popularity.
Teacher Resources - K-12 resources for teaching about earth science.
Storm Surge can be the most damaging and deadly aspect of a hurricane.
Olivine - Abundant in Earth*s mantle. A constituent of meteorites. The gem peridot.
Rock Tumblers - All about rock tumblers and rock tumbling. Read before you buy a tumbler.
Uses of Talc
Talc is a soft mineral used in cosmetics, paper, paint, ceramics and many other products.
What are Glaciers?
What are Glaciers? Learn how glaciers form, flow, advance, retreat, and change over time.
Zircon is the primary ore of zirconium and a gemstone that is available in many colors.
Hematite - The most important ore of iron. A source of mineral pigment since prehistory.
Ant Hill Garnets
Ant Hill Garnets - tiny gems that ants haul to the surface and discard on their anthill. Honest!
Diamond Misconception - Many people think that diamonds form from coal. Not True!
California Earthquake Maps - A collection of isoseismal maps for earthquakes in California.
Field Courses - Over 80 field courses for undergraduate geology students.
Coal Close Up
Coal Through a Microscope - Coal is more than a black rock. It is THE most interesting rock.
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.
Herkimer Diamonds Doubly-terminated quartz crystals used as specimens and gems.
Rock Art - People have been marking on rocks for thousands of years.
Watch out for Ticks!
Ticks are a problem for geologists in some areas. Learn to recognize and avoid them.
Lapis Lazuli - a metamorphic rock and the most popular blue opaque gemstone in history.
Petrified Wood is a fossil that forms when silica replaces and infills the cavities of wood.
Mount Etna - The most active volcano in Europe continues an eruption that started in 2001.
Mount Vesuvius - geology, history, maps, facts and more about the Vesuvius eruptions.
Peridotite is a chromite host rock, a source of diamonds and a possible carbon dioxide sink.
UV Mineral Lamp
Portable UV Lamp - Short and long wave UV for fluorescent mineral viewing.
The Acid Test
The Acid Test - Geologists use dilute hydrochloric acid to identify carbonate minerals.
Mount Cleveland is an active volcano in the Aleutian Islands and a threat to air traffic.
Homeowners Insurance might not cover the types of damage that you think it should.
Azurite - Used as an ore of copper, a pigment, ornamental stone and gem material.
Variscite is a yellowish green to bluish green mineral. It is similar to turquoise and cut as a gem.
Tourmaline - an extremely colorful mineral and gem material.
Abandoned Mine Accidents kill several people every year. Education can prevent deaths.
Shale - The rock that has quickly transformed the oil and gas industry.
Fire Opal is a transparent to translucent opal with a yellow, orange or red background color.
Mineral Rights - Who owns the minerals under your land? Who wants to buy them?
Hawaiian Hot Spot
How did the Hawaiian Islands Form? The power of a moving plate over a stationary hot spot.
Types Of Eruptions
Types of Volcanic Eruptions - A description of the most common eruption types.
Hydraulic Fracturing increases well yield by fracturing the reservoir rock with fluid injection.
Sand is a diverse material. This gallery includes photos of sand from around the world.
Rock-Forming Minerals - most of Earth*s crust is made-up of a small number of minerals.
Uses of Marble
The Uses of Marble are numerous and diverse. You will be surprised by how it is used.
Corundum is the third hardest mineral. It is also the mineral of ruby and sapphire.
Rhodochrosite - a manganese mineral used as an ore, a pink gem and an ornamental stone.
Ilmenite - The primary ore of titanium and source of most titanium dioxide.
Range of Bear Species - Where you might encounter different types of bears.
What is a Maar?
What is a Maar? The second most common volcanic landscape feature on Earth.
Azurite Granite ? A white granite with blue orbs of azurite. A new material from Pakistan.
Garnet is best known as a red gemstone. It occurs in any color and has many industrial uses.
Methane Hydrate deposits contain more fuel value than all other fossil fuels combined.
US Diamond Mines
US Diamond Mines - Did you know that diamonds have been mined in the United States?
The Next Hawaiian Island could be growing in the Pacific Ocean right now. Its name is Lo'ihi.
Lightning Strikes Map
Lightning Strikes Map by NASA shows the worldwide distribution of lightning activity.
Pavlof Volcano - one of the most active volcanoes in North America and a threat to air traffic.
Waterproof Paper - Don't take chances with your field notes and maps. Use waterproof paper.
Canadian Diamond Mines produce some of the largest and highest quality diamonds!
Vanadinite is an important ore of vanadium and a minor source of lead.
Pele*s Hair and Pele*s Tears are two unusual types of lava found at Kilauea and other volcanoes.
Steamboat Geyser - The world*s tallest geyser has erupted three times this year.
Turquoise - A bluish-green gem material that has been used for over 6000 years.
Landslides A USGS fact sheet about landslides and events that trigger them.
Mineraloids are amorphous naturally-occurring inorganic solids that lack crystallinity.
What is LNG?
What is LNG? The use of LNG as an energy source is growing rapidly. Learn more about LNG.
Chalcopyrite - The most important ore of copper for over five thousand years.
What is a Geyser?
What is a Geyser? Photos and information about geysers in many parts of the world.
Oil Fields from Space
Oil Fields from Space - Night views of Earth show the distribution of oil field activity.
Gold Pans and Panning Kits - classifiers, snuffer bottles. Learn how to pan for Gold.
What is Geology?
What is Geology? The study of Earth materials, structures, processes and life over time.
Diamond Production leaders include: Botswana, Russia, Angola and Canada.
Frac Sand - A specialty sand used to maintain porosity in hydraulic fracturing.
Tallest Mountain - Everest has rivals in tallness, altitude and distance to the center of Earth.
Kyanite is a metamorphic mineral used to make porcelain, abrasive products and gems.
World Record Lightning - this lake has more lightning than any other place in the world.
Plate Tectonics - Articles and maps about plate tectonics and the interior of Earth.
Oil and Gas
Oil and Gas - Articles about oil and natural gas in the US and around the world.
Pictures of Opal - A collection of different types of opal from all around the world and Mars too!
Fossils - Learn about fossils and discoveries around the world.
Crushed Stone - About four tons per person is used each year in the United States.
Eagle Ford Shale
Eagle Ford Shale - One of the most prolific oil and gas producers in the United States.
June 6, 1912
June 6, 1912 - The most powerful volcanic eruption of the 20th century.
Largest Volcano - That title is shared by Tamu Massif, Mauna Kea and Ojos del Salado.
Horizontal Drilling has opened new resources and significantly improved productivity.
Salt Domes - Salt structures that are often associated with oil and natural gas accumulations.