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General Geology Articles and Information

What Is Earth Science?What Is Earth Science? What Is Earth Science? The study of Earth and its neighbors in space. Learn more! What Geologists DoWhat Does a Geologist Do? What Does a Geologist Do? Information and two videos about the relevance of geology today. Geologic Time ScaleGeologic Time Scale Divisions of Geologic Time USGS periodically revises rock unit names and age estimates. Geology ToolsGeology Tools Geology Tools - Hammers, field bags, hand lenses, maps, hardness picks, gold pans.
Homeowner InsuranceHomeowner\'s Insurance and Geologic Hazards Homeowners Insurance and Geologic Hazards Most policies do not cover geologic hazards. What Are Minerals?What Are Minerals? Minerals are the building blocks of our society. We use items made with them every day. Plate TectonicsPlate Tectonics Plate Tectonics Articles, theory, plate diagrams, plate maps and teaching ideas. RocksRocks Rocks Galleries of igneous, sedimentary and metamorphic rock photos with descriptions.
What are Glaciers?What are Glaciers? What are Glaciers? Learn how glaciers form, flow, advance, retreat, and change over time. Maps Of PangaeaPangaea Maps Pangaea Maps A sequence of maps shows how a large supercontinent fragmented. Dowsingdowsing Dowsing is a method used to find underground water that is rejected by most geologists. Gold History and UsesGold History and Uses Gold A history of gold uses, mining and prospecting over thousands of years.
VolcanosVolcanos Volcanos Articles about volcanoes, volcanic hazards and eruptions past and present. Rare Earth ElementsRare Earth Elements REEs Special metals used in cell phones, DVDs, batteries, magnets & many other products. Grand CanyonHow Old is the Grand Canyon? How Old is the Grand Canyon? Wayne Ranney explores the Canyon*s age. What is a Maar?What is a Maar? What is a Maar? The second most common volcanic landscape feature on Earth.
Salt DomesSalt Domes Salt Domes - Salt structures that are often associated with oil and natural gas. San Andreas FaultWhat is the San Andreas Fault? What is the San Andreas Fault? Map, photos and description of the fault. Great Rift ValleyGreat Rift Valley The East Africa Rift System Learn about the complex East Africa Rift Valley system. LandslidesLandslides Landslides A USGS fact sheet about landslides and events that trigger them.
Sliding RocksSliding Rocks Sliding Rocks - How these rocks slide across a dry lake bed is a mystery. Bear AttacksBear Attacks Bear Attacks Knowing how to react to a bear encounter and attack could save your life. Roadside GeologyRoadside Geology Roadside Geology Guides Explain the Geology of your state as seen from the road. Salt GlaciersSalt Glaciers Salt Glaciers are masses of salt that flow downslope under their own weight.
What is a Geyser?What is a Geyser? What is a Geyser? Photos of geysers from around the world. Causes, height and more. Bottled WaterBottled Water The Geology of Bottled Water It costs 1000x as much as tap water. What are you getting? Green River FossilsGreen River Fossils Spectacular Fossils of the Green River Formation. Some of the world\'s best fossil fish. Air Bubbles in AmberAir Bubbles in Amber Bubbles in Amber Cretaceous oxygen levels determed from air bubbles trapped in amber.
Rock GlaciersRock Glaciers Rock Glaciers - Masses of ice, snow, rock, mud and water that slowly flow down slope. Methane HydrateMethane Hydrate Methane Hydrate deposits contain more fuel value than all other fossil fuels combined. Diamonds from Coal?Diamonds from Coal? Diamonds from Coal? They form under several conditions that rarely involve coal. Selenga RiverSelenga River The Selenga River delivers most of the water to Lake Baikal, the largest lake in the world.
What is a Hydrograph?What is a Hydrograph? What is a Hydrograph? Charts that display the change of a hydrologic variable over time. Yosemite GlaciersYosemite Glaciers Yosemite Glaciers There are two active glaciers in Yosemite - both slowly melting away. Cell Phone Photosmacro lens photos Take Great Cell Phone Photos - Low-cost, easy-to-use lenses will improve your photos. Yosemite Rock FallYosemite Rock Fall Photos Yosemite Rock Fall Photos A photo sequence of a rockfall and debris avalanche by Herb Dunn.
TroglobitesTroglobites Troglobites are creatures that have adapted to a permanent life in the darkness of a cave. Stream GagingStream Gaging Stream Gaging Stations Used by hydrologists to monitor streams or other water bodies.    

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