 | Shale Gas is natural gas trapped within shale. In the past decade shales have become significant new sources of gas. |
 |  | What Does a Geologist Do?
Learn about the interesting work of geologists in two short videos about the relevance of geology today.
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 | | What is Earth Science? It is the study of Earth and its neighbors in space. It includes geology, astronomy, meteorology & oceanography. |
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Roadside Geology Guides: A great way to learn about the geology of your home area and the perfect road trip companion. |
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Meteorites: An introduction to rocks from outer space from meteorite hunter, Geoffrey Notkin. |
 | | Fluorescent Minerals glow with spectacular colors when illuminated in the dark with an ultraviolet lamp. |
 | | Diamond: Articles, news, videos, production data, and information related to gem and industrial diamond worldwide. |
 | | Marcellus Shale: The most overlooked resource in the eastern United States! |
 | | Herkimer Diamonds: Learn how to find these doubly terminated quartz crystals at Herkimer, NY. |
 | | What Are Minerals? They are part of nearly everything that we use: vehicles, medicine, coins, pencils, cell phones, food and more. |
 | | Volcanoes! A page that links to all of our volcano articles and to the best volcano information that we could find. |
 | | The Many Uses of Gold: Learn how the unique properties of gold make it extremely suited for a large number of industrial uses. |
 | | Diamonds from Coal? Diamonds form under a variety of conditions that rarely involve coal as a source of carbon. |
 | | Landslides: A USGS fact sheet explains different types of landslides and the kind of events that might trigger them. |
 | | Mohs Hardness Scale is a set of reference minerals used to estimate the relative hardness of mineral specimens. |
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| Pavlof Volcano on the Alaska Peninsula is one of the most active volcanoes in North America and a threat to air traffic. |
 | Sunstone is a gem feldspar that exhibits aventurescence caused by the reflection of light from inclusions within the stone. |
 | Pumice is a rock formed during explosive volcanic eruptions. It is used as an abrasive, aggregate, absorbent and insulator. |
 | What is a Maar? The second most common volcanic landscape feature on Earth. Do you know how they form? |
 | | Salt Glaciers are masses of salt that erupt onto Earth's surface and flow downslope under their own weight. |
 | | Volcanic Explosivity: Rating recent and historic volcanic eruptions based upon the volume of tephra ejected. |
 | | Triboluminescence is a flash of light produced when a mineral is subjected to friction, impact or breakage. |
 | | Salt Domes are mounds or columns of salt that have risen above their parent rock unit because of the salt's low specific gravity. |
 | | The Acid Test: Geologists use dilute hydrochloric acid to identify carbonate minerals and detect their presence in rocks. |
 | | Scoria is a dark-colored, extrusive igneous rock with abundant vesicles. It is used as an aggregate in light weight concrete. |
 | | Life on Europa? This moon of Jupiter with a subsurface ocean is now a prime target in the search for life beyond Earth. |
 | | Mount Cleveland is one of the most active volcanoes in Alaska's Aleutian Island Arc and its ash plumes are a threat to air traffic. |
 | | Spinel: The gemstone mineral that was confused with ruby and sapphire for over 1000 years. |
 | | Volcanoes on Venus: Lava flows and shield volcanoes are the dominant surface features of Venus. |
 | | Troglobites are small creatures that have adapted completely to a permanent life in the darkness of a cave. |
 | | Petrified Wood is a fossil that forms when dissolved solids in groundwater preciptate and replace woody material. |
 | | Guar Beans: A tiny bean with a powerful ability to thicken water that is in huge demand for hydraulic fracturing. |
 | | Natural Gas Flaring: Why is so much gas being flared in western North Dakota that it is visible in a night view from space? |
 | | Spodumene is a pegmatite mineral and an important source of lithium. A small amount of spodumene is also used as a gemstone. |
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Daily news for geology and earth science. Delivered to you free by RSS or email. |
 
 | | Geology Dictionary:
Look up definitions in our free geology dictionary. Hundreds of geology term definitions at your fingertips. |
 | | Homeowners Insurance usually does not cover damage caused by floods, landslides, earthquakes and other geohazards. |
 | | Opals: Gem quality opal is one of the most spectacular gemstones. A single stone can flash with every color of the spectrum. |
 | | Gold: A survey of how gold has been an important metal for thousands of years. Learn about uses, prospecting, mining, more. |
 | | Supersize Topo Maps: The folks at Mytopo.com are now printing topo maps up to 5'x8' or 8'x5' in size. You can also get smaller maps and aerial photos. We are MyTopo affiliates. |
 | Geology Tools: Visit the Geology.com store for rock hammers, hand lenses, field books and other tools for the geologist. |
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