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How did the Hawaiian Islands Form? The power of a moving plate over a stationary hot spot.

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Abandoned Mine Accidents kill several people every year. Education can prevent deaths.

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Emerald is the most popular green gemstone in the United States and most of the world.

Ant Hill Garnets - tiny gems that ants haul to the surface and discard on their anthill. Honest!

World*s Largest Diamonds Records for the largest rough, faceted and carbonado diamond.

Free Google Earth software allows you to browse seamless world satellite images. Free.

The Unsung Mineral Hero - and the commodity upon which almost everything is built.

Wall Maps - Wall maps of the world, continents, states and the USA.

Cave of the Hands is a cave where ancient people painted hands about 9000 years ago.

国内苹果手机怎样使用油管 - The most important ore of copper for over five thousand years.

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Diamonds - Learn about the properties of diamond, its many uses, and diamond discoveries.

Geology News - News about geology, earth science, energy, and more. Updated daily.

Granite - The intrusive igneous rock that underlies continents and countertops.

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Landslides A USGS fact sheet about landslides and events that trigger them.

Hardness Picks - Test for hardness with precise and easy-to-use hardness picks.

Fluorescent Minerals and rocks glow with spectacular colors under ultraviolet light.

Rock & Mineral Kits The best way to learn about rocks and minerals is with specimens!

Topo Maps - The DeLorme Atlas is an entire state of topo maps in one convenient book.

Petrified Wood is a fossil that forms when silica replaces and infills the cavities of wood.

Meteorites - Rocks that were once parts of planets or large asteroids.

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Plate Tectonics - Articles and maps about plate tectonics and the interior of Earth.

Gemstones - Colorful images and articles about diamonds and colored stones.

苹果国内怎么上油管 in Venezuela is the tallest waterfall in the world - it is 3212 feet tall.

The Science of Fireworks Learn how the colors and shapes are created.

Copper Kills COVID-19 and many other pathogens to limit the spread of disease.

Grape Agate is a popular mineral specimen with the color and the shape of a bunch of grapes.

Names Used for Great Britain, British Isles, United Kingdom, and Ireland. What they mean.

Rocks - Galleries of igneous, sedimentary and metamorphic rock photos with descriptions.

Minerals - Descriptions, photos, articles, properties and uses for common minerals.

Types of Maps - Explore some of the most popular types of maps that have been made.

Rhyolite An extrusive igneous rock with a high silica content, produced from granitic magma.

Colored Diamonds are diamonds with a noticeable body color. They can sell for over $1M/carat.

苹果怎么看油管视频 - Coal is more than a black rock. It is THE most interesting rock.

Peridotite is a chromite host rock, a source of diamonds and a possible carbon dioxide sink.

100+ Gems - Photos of over 100 beautiful gems ranging from the popular to the obscure.

Largest Hurricanes Are they determined by wind speed, value of damage, most deaths?

Pictures of Opal - A collection of different types of opal from all around the world and Mars too!

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Lapis Lazuli - a metamorphic rock and the most popular blue opaque gemstone in history.

Extraterrestrial Gems - A number of materials from space are used as attractive gems.

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Volcanoes - Articles about volcanoes, volcanic hazards and eruptions past and present.

Quartzite is metamorphic rock formed when sandstone is subjected to heat and pressure.

What Is Earth Science? The study of Earth and its neighbors in space. Learn more!

苹果油管youtube怎么上 is the primary ore of molybdenum which is used in superalloys and as a lubricant.

Tourmaline - an extremely colorful mineral and gem material.

Teacher Resources - K-12 resources for teaching about earth science.

Crater of Diamonds - The only diamond mine in the world where you can be the miner.

The East Africa Rift System - The extensive fault system that is tearing Africa apart.

Homeowners Insurance might not cover earthquake, hurricane and other geohazard damage.

Rare Earths - Special materials used in electronics, defense, medical & many other products.

Hand Lens A 10-power folding magnifier in a metal case. A frequently used lab and field tool.

How Are Hurricanes Named? There is a plan for naming tropical storms.

Know the Rules before removing rocks, fossils or minerals from public or private property.

Mount Cleveland is an active volcano in the Aleutian Islands and a threat to air traffic.

Gem Silica is a blue chalcedony colored by copper. It is the rarest and most valuable chalcedony.

Geology Books - A variety of books for reference, field trips, reading and more.

What is Geology? The study of Earth materials, structures, processes and life over time.

Rock Tumblers - All about rock tumblers and rock tumbling. Read before you buy a tumbler.

Charoite is a purple silicate mineral, found only in Russia, used as a gem material.

Mount Vesuvius - geology, history, maps, facts and more about the Vesuvius eruptions.

Portable UV Lamp - Short and long wave UV for fluorescent mineral viewing.

What is a Maar? The second most common volcanic landscape feature on Earth.

What is the San Andreas Fault? Map, photos and description of the fault.

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Birthstones are gems assigned to the month of a person*s birth. They are popular gifts in the U.S.

Bear Attacks - Knowing how to react to a bear encounter or attack could save your life.

Sliding Rocks Mystery - What causes these rocks to slide across a playa in Death Valley?

Ilmenite - The primary ore of titanium and source of most titanium dioxide.

Fool*s Gold is a name used for pyrite when its brassy color fools people looking for gold.

苹果国内怎么上油管 Mars rovers have found dozens of meteorites traveling around the red planet.

Chalk is a variety of limestone formed from fine-grained marine sediment known as ooze.

Ruby and Sapphire are the 2nd and 3rd most popular colored stones in the United States.

Mineraloids are amorphous naturally-occurring inorganic solids that lack crystallinity.

Fire Opal is a transparent to translucent opal with a yellow, orange or red background color.

Waterproof Paper - Don't take chances with your field notes and maps. Use waterproof paper.

Novarupta - The most powerful volcanic eruption of the 20th century occurred in the U.S.A.

Horizontal Drilling has opened new resources and significantly improved productivity.

苹果油管youtube怎么上 is a diverse material. This gallery includes photos of sand from around the world.

Deepest Point in the Ocean The deepest point in the ocean is in the Mariana Trench.

Field Courses - Over 80 field courses for undergraduate geology students.

Shale - The rock that has quickly transformed the oil and gas industry.

Corundum is the third hardest mineral. It is also the mineral of ruby and sapphire.

Mined in America - Small mines in the United States produce a diversity of beautiful gemstones.

Largest Earthquake ever recorded - Magnitude 9.5. Chile, 1960.

Debris Flows are moving masses of loose mud, sand, soil, rock and water.

Gifts That Rock - What are the most popular gift items in the Geology.com store?

World Record Lightning - this lake has more lightning than any other place in the world.

Tallest Mountain - Everest has rivals in tallness, altitude and distance to the center of Earth.

The Acid Test - Geologists use dilute hydrochloric acid to identify carbonate minerals.

Tanzanite was unknown until a few decades ago but it has erupted into wide popularity.

Obsidian - the volcanic rock that cools so quickly that it becomes a natural glass.

Kyanite is a metamorphic mineral used to make porcelain, abrasive products and gems.

Ticks are a problem for geologists in some areas. Learn to recognize and avoid them.

The Next Hawaiian Island could be growing in the Pacific Ocean right now. Its name is Lo'ihi.

US Diamond Mines - Did you know that diamonds have been mined in the United States?

Rock Art - People have been marking on rocks for thousands of years.

Rock-Forming Minerals - most of Earth*s crust is made-up of a small number of minerals.

Phytoplankton Blooms - Satellite images of explosive marine plankton blooms.

Types of Volcanic Eruptions - A description of the most common eruption types.

Expansive Soil causes more damage than floods, hurricanes & tornadoes combined.

苹果油管youtube怎么上 - a manganese mineral used as an ore, a pink gem and an ornamental stone.

Labradorite is a feldspar mineral that sometimes exhibits an iridescent play-of-color.

Soapstone is a metamorphic rock with properties that make it suitable for a variety of projects.

Blue Flames and the largest highly acidic lake in the world at Kawah Ijen Volcano.

Azurite - Used as an ore of copper, a pigment, ornamental stone and gem material.

Diamond Misconception - Many people think that diamonds form from coal. Not True!

Tallest Tsunami - A wave with a run-up height of 1720 feet occurred in Lituya Bay, Alaska.

Volcanic Explosivity - Rating volcanic eruptions based upon the volume of tephra ejected.

Talc is a soft mineral used in cosmetics, paper, paint, ceramics and many other products.

Ethiopian Opal - The new opal heavyweight that might give Australia a run.

Diabase - the rock selected for Stonehenge and transported 240 miles in 2100 BC.

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Cinnabar - the only important ore of mercury. Used in pigments until its toxicity was realized.

Mohs Hardness Scale is a set of reference minerals used for classroom hardness testing.

Hematite - The most important ore of iron. A source of mineral pigment since prehistory.

Lightning Strikes Map by NASA shows the worldwide distribution of lightning activity.

Morganite is an orange to pink gemstone, a variety of beryl, that is growing rapidly in popularity.

Pyroxene Minerals are a group of chain silicate minerals found in igneous and metamorphic rocks.

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Solar System Volcanoes - Earth is not the only location of volcanic activity.

The Many Uses of Gold - Unique properties make gold one of the most useful metals.

What is a Geyser? Photos and information about geysers in many parts of the world.

California Earthquake Maps - A collection of isoseismal maps for earthquakes in California.

Utica Shale is a major source of oil, natural gas and natural gas liquids in PA, OH and WV.

Range of Bear Species - Where you might encounter different types of bears.

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Hydraulic Fracturing increases well yield by fracturing the reservoir rock with fluid injection.

Coquina - A porous limestone composed almost entirely of fossil debris.

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Frac Sand - A specialty sand used to maintain porosity in hydraulic fracturing.

Olivine - Abundant in Earth*s mantle. A constituent of meteorites. The gem peridot.

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Largest Volcano - That title is shared by Tamu Massif, Mauna Kea and Ojos del Salado.

Salt Domes - Salt structures that are often associated with oil and natural gas accumulations.