|Crater of Diamonds
Crater of Diamonds - The only diamond mine in the world where you can be the miner.
||US Diamond Mines
US Diamond Mines - Did you know that diamonds have been mined in the United States?
||Fireworks & Minerals
The Science of Fireworks Their shapes and colors - produced through chemistry, physics & art.
||Oil Fields from Space
Oil Fields from Space - Night views of Earth show the distribution of oil field activity.
Mount Cleveland is an active volcano in the Aleutian Islands and a threat to air traffic.
Tanzanite was unknown until a few decades ago but it has erupted into wide popularity.
||Coal Close Up
Coal Through a Microscope - Coal is more than a black rock. It is THE most interesting rock.
Geology.com News is updated several times each week. Read it here or receive email updates.
|San Andreas Fault Map
Google Map of the San Andreas Fault Zoom in to see the fault trace on satellite images.
Rocks - Galleries of igneous, sedimentary and metamorphic rock photos with descriptions.
||Arctic Seafloor Map
Arctic Ocean Seafloor Map The ridges, basins, shelves and rifts defining the Arctic seafloor.
The Host Rock of Diamonds - Diamonds are found in Kimberlite, a variety of peridotite.
California Earthquake Maps A collection of isoseismal maps for earthquakes in California.
Minerals - Descriptions, photos, articles, properties and uses for common minerals.
||Life on Europa ?
Life on Europa might exist in a salty ocean a short distance below its frozen surface.
Volcanic Explosivity - Rating volcanic eruptions based upon the volume of tephra ejected.
Sunstone is a gem feldspar with aventurescence caused by light reflecting from platy inclusions.
Mount Vesuvius - geology, history, maps, facts and more about the Vesuvius eruptions.
||Lightning Strikes Map
Lightning Strikes Map - A NASA map showing the worldwide distribution of lightning activity.
||Sea Level Rise Maps
Sea Level Rise Maps - See what will be flooded as sea level rises.
Help a Science Teacher - At DonorsChoose.org you can support a K-12 science project.
Mineraloids are amorphous naturally-occurring inorganic solids that lack crystallinity.
||Find Minerals & Gems
Find Minerals and Gems - Dozens of sites where you can dig and keep what you find.
Bear Attacks - Knowing how to react to a bear encounter or attack could save your life.
Meteorite Identification Step one in identifying a possible meteorite is the magnet test.
Lapis Lazuli - a metamorphic rock and the most popular blue opaque gemstone in history.
||Oil and Gas
Oil and Gas - Articles about oil and natural gas in the US and around the world.
Diamonds - Learn about the properties of diamond, its many uses and diamond discoveries.
|The Brewery Rock ?
The Rock Used to Make Beer - Geologists are beer experts and should know about this rock.
Rhodonite - a manganese silicate used as a minor ore of manganese and as a gemstone.
Fluorescent Minerals and rocks glow with spectacular colors under ultraviolet light.
Pictures of Opal - A collection of different types of opal from all around the world and Mars too!
Gemstones - Colorful images and articles about diamonds and colored stones.
||Google Earth - Free
Free Google Earth software allows you to browse seamless world satellite images. Free.
||Watch out for Ticks!
Ticks are a problem for geologists in some areas. Learn to recognize and avoid them.
Sliding Rocks Mystery - What causes these rocks to slide across a playa in Death Valley?
|Asteroid Impact Map
Asteroid Impact Map - Explore fifty of the most obvious asteroid impact craters on Earth.
Obsidian - the volcanic rock that cools so quickly that it becomes a natural glass.
Plate Tectonics - Articles, maps, information about plate tectonics and the interior of Earth.
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.
||San Andreas Fault
The San Andreas Fault - A feature that separates the Pacific and North American Plates.
||Land Below Sea Level
Land Below Sea Level - Did you know that dozens of land locations are below sea level?
Geologist Tools - Visit our store for a large selection of field and laboratory tools.
Diamond Misconception - Lots of people think that diamonds form from coal. Not True!
Homeowners Insurance usually does not cover the most common geologic hazards.
Methane Hydrate deposits contain more fuel value than all other fossil fuels combined.
Exploring a Hydrocarbon Sea on Titan with a submarine is a potential NASA mission.
|Gems from Space
Extraterrestrial Gems - A number of materials from space are used as attractive gems.
Tallest Tsunami - A wave with a run-up height of 1720 feet occurred in Lituya Bay, Alaska.
100+ Gems - Photos of over 100 beautiful gems ranging from the popular to the obscure.
Emerald is the most popular green gemstone in the United States and most of the world.
Fossils - Learn about fossils and discoveries around the world.
||What Is Earth Science?
What Is Earth Science? The study of Earth and its neighbors in space. Learn more!
Rock Art - People have been marking on rocks for thousands of years.
Mohs Hardness Scale is a set of reference minerals used for classroom hardness testing.
|Uses of Marble
The Uses of Marble are numerous and diverse. You will be surprised by how it is used.
Teacher Resources - K-12 resources for teaching about earth science.
||The Acid Test
The Acid Test - Geologists use dilute hydrochloric acid to identify carbonate minerals.
Limonite - an amorphous iron oxide. Used as an ore of iron and as a pigment since prehistory.
Metals are important mineral products used in manufacturing and construction projects.
Chatoyant Gems look like the eye of a cat. A line of light moves across the surface of the stone.
Turquoise - A bluish-green gem material that has been used for over 6000 years.
||Huge Diamond Deposit
The Largest Diamond Deposit in the world could be under Popigai Crater in Russia.
|Volcanoes in Space
Extraterrestrial Volcanoes - Earth is not the only solar system body with volcanoes.
Volcanoes - Articles about volcanoes, volcanic hazards and eruptions past and present.
Ammolite is a fossil and a gemstone. It is shell material from fossil ammonites.
||What is a Geyser?
Photos of Geysers from around the world with information about height, eruption interval, more.
|Facts About Copper
Facts About Copper - Information about copper uses, production, resources and more.
Petrified Wood is a fossil that forms when dissolved material preciptates and replaces wood.
Corundum is the third hardest mineral. It is also the mineral of ruby and sapphire.
||Ruby and Sapphire
Ruby and Sapphire are the 2nd and 3rd most popular colored stones in the United States.
Labradorite is a feldspar mineral that sometimes exhibits an iridescent play-of-colors
Astronomy - Fantastic images and articles about solar system and deep-space astronomy.
Sand is a diverse material. This gallery includes photos of sand from around the world.
||What is Geology?
What is Geology? - The study of Earth materials, structures, processes and life over time.
Largest Earthquake ever recorded - Magnitude 9.5. Chile, 1960.
||Types Of Eruptions
Types of Volcanic Eruptions - A description of the most common eruption types.
Tallest Mountain - Everest has rivals in tallness, altitude and distance to the center of Earth.
Granite - The intrusive igneous rock that underlies continents and countertops.
Horizontal Drilling has opened new resources and significantly improved productivity.
||What Is The Moho?
What Is The Moho? Learn about the Mohorovicic Discontinuity - the mantle/crust boundary.
||Rocks on Mars
Rocks on Mars - Many of the rocks found on Mars are not very different from Earth rocks.
Meteorites - Rocks that were once parts of planets or large asteroids.
Largest Desert - The Sahara is huge but two polar deserts are larger.
||Uses of Gold
The Many Uses of Gold - Unique properties make gold one of the most useful metals.
Hydraulic Fracturing - Increases well yield by fracturing the reservoir rock with fluid injection.
||USA Landslide Map
Landslide Incidence Map - A USGS map showing landslide incidence in the United States.
|Rare Earth Elements
Rare Earths - Special materials used in electronics, defense, medical & many other products.
||Cave of the Hands
Cave of the Hands is a cave where ancient people painted hands about 9000 years ago.
Soapstone is a metamorphic rock with properties that make it suitable for a variety of projects.
Garnet is best known as a red gemstone. It occurs in any color and has many industrial uses.
Salt Domes - Columns of salt that move upwards because of their low specific gravity.
Iolite is the gem variety of the mineral cordierite. An alternative to sapphire and tanzanite.
Hematite - The most important ore of iron. A source of mineral pigment since prehistory.
||What is LNG?
What is LNG? The use of LNG as an energy source is growing rapidly. Learn more about LNG.
|Great Rift Valley
The East Africa Rift System - The extensive fault system that is tearing Africa apart.
Basalt - Most of the ocean basin and part of the continents are underlain by basalt.
Mount Etna - The most active volcano in Europe continues an eruption that started in 2001.
Rock Glaciers - Masses of rock, ice, snow, mud and water that slowly flow down slope.
Frac Sand - The amount of frac sand produced in the USA is up by over 300% since 2009.
Largest Volcano - That title is shared by Tamu Massif, Mauna Kea and Ojos del Salado.
Ametrine is a bicolor quartz (amethyst + citrine) and a gemstone of growing popularity.
Shale - The rock that has quickly transformed the oil and gas industry.
Azurite Granite ? A white granite with blue orbs of azurite. It is a new gem material from Pakistan.