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General Geology Articles and Information


Igneous and Volcanic
igneous and volcanic features
Igneous and Volcanic Features an introduction to how these rocks occur below and above ground.
Roadside Geology
Roadside Geology
Roadside Geology Guides Explain the Geology of your state as seen from the road.
Minerals
Minerals
Minerals - Descriptions, photos, articles, properties and uses for common minerals..
Geology Dictionary
Geology Dictionary
Geology Dictionary - contains thousands of geological terms with their definitions.
Tallest Waterfall
Tallest Waterfall
Angel Falls in Venezuela is the tallest waterfall in the world - it is 3212 feet tall.
Geologic Time Scale
Geologic Time Scale
Divisions of Geologic Time USGS periodically revises rock unit names and age estimates.
Rare Earth Elements
Rare Earth Elements
REEs Special metals used in cell phones, DVDs, batteries, magnets & many other products.
Maps Of Pangaea
Pangaea Maps
Pangaea Maps A sequence of maps shows how a large supercontinent fragmented.
Rocks
Rocks
Rocks Galleries of igneous, sedimentary and metamorphic rock photos with descriptions.
Land Below Sea Level
Land Below Sea Level
Land Below Sea Level - Did you know that dozens of land locations are below sea level?
Plate Tectonics
Plate Tectonics
Plate Tectonics Articles, theory, plate diagrams, plate maps and teaching ideas.
Geology Tools
Geology Tools
Geology Tools - Hammers, field bags, hand lenses, maps, hardness picks, gold pans.
What is a Maar?
What is a Maar?
What is a Maar? The second most common volcanic landscape feature on Earth.
What Is Earth Science?
What Is Earth Science?
What Is Earth Science? The study of Earth and its neighbors in space. Learn more!
Sliding Rocks
Sliding Rocks
Sliding Rocks - How these rocks slide across a dry lake bed is a mystery.
What Geologists Do
What Does a Geologist Do?
What Does a Geologist Do? Information and two videos about the relevance of geology today.
Salt Domes
Salt Domes
Salt Domes - Salt structures that are often associated with oil and natural gas.
What is a Geyser?
What is a Geyser?
What is a Geyser? Photos of geysers from around the world. Causes, height and more.
Gold History and Uses
Gold History and Uses
Gold A history of gold uses, mining and prospecting over thousands of years.
Diamonds from Coal?
Diamonds from Coal?
Diamonds from Coal? They form under several conditions that rarely involve coal.
What are Glaciers?
What are Glaciers?
What are Glaciers? Learn how glaciers form, flow, advance, retreat, and change over time.
Dowsing
dowsing
Dowsing is a method used to find underground water that is rejected by most geologists.
San Andreas Fault
What is the San Andreas Fault?
What is the San Andreas Fault? Map, photos and description of the fault.
Grand Canyon
How Old is the Grand Canyon?
How Old is the Grand Canyon? Wayne Ranney explores the Canyon*s age.
Homeowner Insurance
Homeowner\'s Insurance and Geologic Hazards
Homeowners Insurance and Geologic Hazards Most policies do not cover geologic hazards.
Volcanoes
Volcanoes
Volcanoes Articles about volcanoes, volcanic hazards and eruptions past and present.
Gold Panning Kits
Gold Pans
Gold Pans and Panning Kits - classifiers, snuffer bottles. Learn how to pan for gold!
Bear Attacks
Bear Attacks
Bear Attacks Knowing how to react to a bear encounter and attack could save your life.
Green River Fossils
Green River Fossils
Spectacular Fossils of the Green River Formation. Some of the world\'s best fossil fish.
Salt Glaciers
Salt Glaciers
Salt Glaciers are masses of salt that flow downslope under their own weight.
Great Rift Valley
Great Rift Valley
The East Africa Rift System Learn about the complex East Africa Rift Valley system.
Bottled Water
Bottled Water
The Geology of Bottled Water It costs 1000x as much as tap water. What are you getting?
Methane Hydrate
Methane Hydrate
Methane Hydrate deposits contain more fuel value than all other fossil fuels combined.
Gifts That Rock
Gifts That Rock
Gifts That Rock - What are the most popular gift items in the Geology.com store?
Landslides
Landslides
Landslides A USGS fact sheet about landslides and events that trigger them.
Selenga River
Selenga River
The Selenga River delivers most of the water to Lake Baikal, the largest lake in the world.
Rock Glaciers
Rock Glaciers
Rock Glaciers - Masses of ice, snow, rock, mud and water that slowly flow down slope.
Waterproof Paper
Waterproof Paper
Waterproof Paper - Don't take chances with your field notes and maps. Use waterproof paper.
Cell Phone Photos
macro lens photos
Take Great Cell Phone Photos - Low-cost, easy-to-use lenses will improve your photos.
Stream Gaging
Stream Gaging
Stream Gaging Stations Used by hydrologists to monitor streams or other water bodies.
Yosemite Glaciers
Yosemite Glaciers
Yosemite Glaciers There are two active glaciers in Yosemite - both slowly melting away.
Yosemite Rock Fall
Yosemite Rock Fall Photos
Yosemite Rock Fall Photos A photo sequence of a rockfall and debris avalanche by Herb Dunn.
What is a Hydrograph?
What is a Hydrograph?
What is a Hydrograph? Charts that display the change of a hydrologic variable over time.
Air Bubbles in Amber
Air Bubbles in Amber
Bubbles in Amber Cretaceous oxygen levels determed from air bubbles trapped in amber.
Troglobites
Troglobites
Troglobites are creatures that have adapted to a permanent life in the darkness of a cave.