Frac Sand - A specialty sand used to maintain porosity in hydraulic fracturing.
Mount Cleveland is an active volcano in the Aleutian Islands and a threat to air traffic.
||Land Below Sea Level
Land Below Sea Level - Did you know that dozens of land locations are below sea level?
Geology Tools Rock hammers, field bags, hand lenses, maps, hardness picks, gold pans.
Homeowners Insurance usually does not cover the most common geologic hazards.
Kyanite is a metamorphic mineral used to make porcelain, abrasive products and gems.
|What is a Maar?
What is a Maar? The second most common volcanic landscape feature on Earth.
Diamond Misconception - Many people think that diamonds form from coal. Not True!
||What is a Geyser?
What is a Geyser? Photos and information about geysers in many parts of the world.
Tanzanite was unknown until a few decades ago but it has erupted into wide popularity.
Hydraulic fracturing increases well yield by fracturing the reservoir rock with fluid injection.
||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.
||San Andreas Fault Map
Google Map of the San Andreas Fault Zoom in to see the fault trace on satellite images.
|What are Glaciers?
What are Glaciers? Learn how glaciers form, flow, advance, retreat, and change over time.
Horizontal Drilling has opened new resources and significantly improved productivity.
Sand is a diverse material. This gallery includes photos of sand from around the world.
Salt Domes - Salt structures that are often associated with oil and natural gas accumulations.
||Cave of the Hands
Cave of the Hands is a cave where ancient people painted hands about 9000 years ago.
||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.
Turquoise - A bluish-green gem material that has been used for over 6000 years.
Dowsing is a method used to find underground water that is rejected by most geologists.
Expansive Soil Causes more damage than floods, hurricanes & tornadoes combined.
||Geology of Gems
Geology of Gems - The first comprehensive book on the geology of gem deposits.
Shale - The rock that has quickly transformed the oil and gas industry.
Hematite - The most important ore of iron. A source of mineral pigment since prehistory.
||Great Rift Valley
The East Africa Rift System - The extensive fault system that is tearing Africa apart.
||What is Geology?
What is Geology? - The study of Earth materials, structures, processes and life over time.
Labradorite is a feldspar mineral that sometimes exhibits an iridescent play-of-colors
Tallest Tsunami - A wave with a run-up height of 1720 feet occurred in Lituya Bay, Alaska.
Quartzite is metamorphic rock formed when sandstone is subjected to heat and pressure.
|US Diamond Mines
US Diamond Mines - Did you know that diamonds have been mined in the United States?
||Lightning Strikes Map
Lightning Strikes Map by NASA shows the worldwide distribution of lightning activity.
Fluorescent Minerals and rocks glow with spectacular colors under ultraviolet light.
|What Is Earth Science?
What Is Earth Science? The study of Earth and its neighbors in space. Learn more!
100+ Gems - Photos of over 100 beautiful gems ranging from the popular to the obscure.
Corundum is the third hardest mineral. It is also the mineral of ruby and sapphire.
|Google Earth - Free
Free Google Earth software allows you to browse seamless world satellite images. Free.
Diamonds - Learn about the properties of diamond, its many uses and diamond discoveries.
Blue Flames and the largest highly acidic lake in the world at Kawah Ijen Volcano.
Volcanic Explosivity - Rating volcanic eruptions based upon the volume of tephra ejected.
Azurite - Used as an ore of copper, a pigment, ornamental stone and gem material.
Crushed Stone - About four tons per person is used each year in the United States.
Meteorites - Rocks that were once parts of planets or large asteroids.
Deepest Lake in the World Lake Baikal in southern Russia is the deepest lake in the World.
Hardness Picks - Mohs hardness testing with precise and easy-to-use hardness picks.
|USA Landslide Map
Landslide Incidence Map - A USGS map showing landslide incidence in the United States.
Gold Pans and Panning Kits - classifiers, snuffer bottles. Pans sized for kids to Goliath.
||Rare Earth Elements
Rare Earths - Special materials used in electronics, defense, medical & many other products.
Emerald is the most popular green gemstone in the United States and most of the world.
||What Are Minerals?
Minerals are the building blocks of our society. We use items made with them every day.
Mohs Hardness Scale is a set of reference minerals used for classroom hardness testing.
Peridotite is a chromite host rock, a source of diamonds and a possible carbon dioxide sink.
||Utica Well Density
Utica Well Density A surprising density of horizontal wells in the Utica Shale of Ohio.
||The Brewery Rock ?
The Rock Used to Make Beer - Geologists are beer experts and should know about this rock.
Mount Etna - The most active volcano in Europe continues an eruption that started in 2001.
Hand Lens A 10-power folding magnifier in a metal case. A frequently used lab and field tool.
||Sea Level Rise Maps
Sea Level Rise Maps - See what will be flooded as sea level rises.
Rocks - Galleries of igneous, sedimentary and metamorphic rock photos with descriptions.
Mount Vesuvius - geology, history, maps, facts and more about the Vesuvius eruptions.
||Crater of Diamonds
Crater of Diamonds - The only diamond mine in the world where you can be the miner.
|What is LNG?
What is LNG? The use of LNG as an energy source is growing rapidly. Learn more about LNG.
Sunstone - A gem feldspar with aventurescence caused by light reflecting from platy inclusions.
||Watch out for Ticks!
Ticks are a problem for geologists in some areas. Learn to recognize and avoid them.
|UV Mineral Lamp
Portable UV Lamp - Short and long wave UV for fluorescent mineral viewing.
||Uses of Gold
The Many Uses of Gold - Unique properties make gold one of the most useful metals.
||Huge Diamond Deposit
The Largest Diamond Deposit in the world could be under Popigai Crater in Russia.
Chalcopyrite - The most important ore of copper for over five thousand years.
||Gems from Space
Extraterrestrial Gems - A number of materials from space are used as attractive gems.
Tallest Mountain - Everest has rivals in tallness, altitude and distance to the center of Earth.
Obsidian - the volcanic rock that cools so quickly that it becomes a natural glass.
||Types Of Eruptions
Types of Volcanic Eruptions - A description of the most common eruption types.
Mineral Rights Who owns the minerals under your land? Who wants to buy them?
Rock Bags - Durable field bags with pockets for carrying maps, books, specimens and tools.
Rhodonite - a manganese silicate used as a minor ore of manganese and as a gemstone.
Gem Silica is a blue chalcedony colored by copper. It is the rarest and most valuable chalcedony.
Wall Maps - Wall maps of the world, continents, states and the USA.
Garnet is best known as a red gemstone. It occurs in any color and has many industrial uses.
Rock Art - People have been marking on rocks for thousands of years.
Methane Hydrate deposits contain more fuel value than all other fossil fuels combined.
||What Is The Moho?
What Is The Moho? The Mohorovicic Discontinuity is the mantle/crust boundary.
Petrified Wood is a fossil that forms when dissolved material preciptates and replaces wood.
Rock Kits for classroom and personal study. A great way to learn about rocks.
||The Acid Test
The Acid Test - Geologists use dilute hydrochloric acid to identify carbonate minerals.
Soapstone is a metamorphic rock with properties that make it suitable for a variety of projects.
|Rocks on Mars
Rocks on Mars - Many of the rocks found on Mars are not very different from Earth rocks.
||Ruby and Sapphire
Ruby and Sapphire are the 2nd and 3rd most popular colored stones in the United States.
||Uses of Marble
The Uses of Marble are numerous and diverse. You will be surprised by how it is used.
Volcanoes - Articles about volcanoes, volcanic hazards and eruptions past and present.
Range of Bear Species - Where you might encounter different types of bears.
Lapis Lazuli - a metamorphic rock and the most popular blue opaque gemstone in history.
Fire Opal is a transparent to translucent opal with a yellow, orange or red background color.
Sliding Rocks Mystery - What causes these rocks to slide across a playa in Death Valley?
||San Andreas Fault
The San Andreas Fault - A feature that separates the Pacific and North American Plates.
|Asteroid Impact Map
Asteroid Impact Map - Explore fifty of the most obvious asteroid impact craters on Earth.
Largest Volcano - That title is shared by Tamu Massif, Mauna Kea and Ojos del Salado.
World Record Lightning - this lake has more lightning than any other place in the world.
|Coal Close Up
Coal Through a Microscope - Coal is more than a black rock. It is THE most interesting rock.
Red Beryl is one of the rarest gems. Small amounts are mined at one locality in Utah.
Gemstones - Colorful images and articles about diamonds and colored stones.
Mineraloids are amorphous naturally-occurring inorganic solids that lack crystallinity.
Bear Attacks - Knowing how to react to a bear encounter or attack could save your life.
||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.
Rock Tumblers - All about rock tumblers and rock tumbling. Read before you buy a tumbler.
Teacher Resources - K-12 resources for teaching about earth science.
The Richest Meteorite Field - More meteorites found here than anywhere else on Earth.
||Arctic Seafloor Map
Arctic Ocean Seafloor Map The ridges, basins, shelves and rifts defining the Arctic seafloor.
Pavlof Volcano - one of the most active volcanoes in North America and threat to air traffic.
Canadian Diamond Mines produce some of the largest and highest quality gems!
||Fireworks & Minerals
The Science of Fireworks Learn how the colors and shapes are created.
||June 6, 1912
June 6, 1912 - The most powerful volcanic eruption of the 20th century.
Diamond Production leaders include: Botswana, Russia, Angola and Canada.
Chatoyant Gems look like the eye of a cat. A line of light moves across the surface of the stone.
Olivine Rain? Spitzer Telescope discovered a rain of olivine crystals on protostar HOPS-68.
Azurite Granite ? A white granite with blue orbs of azurite. A new material from Pakistan.
Tourmaline - the most colorful mineral and natural gem material on Earth.
||Oil Fields from Space
Oil Fields from Space - Night views of Earth show the distribution of oil field activity.
Plate Tectonics - Articles and maps about plate tectonics and the interior of Earth.
Gfeller Leather field cases, hammer holsters, lanyards, field belts, acid bottle cases, more.
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.
||Oil and Gas
Oil and Gas - Articles about oil and natural gas in the US and around the world.
||Fee Mining Sites
Fee Mining sites are mines that you can enter, pay a fee, and keep anything that you find.
Largest Earthquake ever recorded - Magnitude 9.5. Chile, 1960.