Geology

Eruption of Mount St Helens - InterNetwork Media / Getty Images

May 18, 1980: a Look Back at the Deadly Eruption of Mount St. Helens

Tsunami travel time from 1960 Chile earthquake. - NOAA/Department of Commerce

The 8 Most Powerful Earthquakes Ever Recorded

Alejandro Rivera/E+/Getty Images

What Are the Best Geology Apps for iOS and Android?

Geology
The Latest in Geology
Diverging plates in a volcanic fissure zone, Myvatn, Iceland, Polar Regions - Christian Kober / robertharding/Getty Images
Here are the Sizes of Tectonic or Lithospheric Plates
Here is a table listing the lithosphere's tectonic plates by order of size. The lithosphere is the brittle outer layer of the solid Earth.
Hawaii's Kilauea Caldera at Twilight - Kevin Thrash/Moment/Getty Images
These Are the World's Largest Calderas
Here is a table of the world's largest known calderas. Calderas, or supervolcanoes, are located in Russia, the United States, Argentina, and more.
James Hutton, 1726 - 1797. Geologist - National Galleries of Scotland / Getty Images
These Geologists Changed the Way We Look at Earth
These influential and important geologists forever changed the way that humans think about the planet.
What Are the Best Geology Apps for iOS and Android?
From geologic mapping to earthquake reporting, here is a list of useful geoscience apps for iPhone, iPad and Android.
Obed Wild & Scenic River - Posnov / Getty Images
The Geology and Landmarks of the Appalachian Plateau
A look at the geologic history, coal production and unique attractions of the Appalachian Plateau.
Angels Landing, Zion National Park, Utah - Bas Vermolen / Moment / Getty Images
Geology of Zion National Park
Nearly 275 million years of sedimentation, lithification, uplift and erosion can be seen in the geologic features of Zion National Park.
Uranium Concentrations in North America - Credit: USGS
Map of Natural Radioactivity in the U.S.
A look at natural radioactivity and some of the regions in the United States where Uranium is found in especially high or low concentrations.
Age of the cceanic lithosphere - Credit: National Oceanic and Atmospheric Administration/Department of Commerce
How Old Is the Ocean Floor?
The oceanic crust is much younger than the continental crust, rarely reaching more than 180 million years in age.
A large, intrusive dike - Mangiwau / Moment / Getty Images
What Are Dikes and How Do They Form?
Dikes are igneous or sedimentary intrusions that form in the pre-existing, vertical fractures of older rock.
An illustration of subduction zones - Wikimedia Commons user MagentaGreen/ licensed under CC BY-SA 3.0
Subduction: The Sinking of Tectonic Plates
Subduction occurs along convergent boundaries involving at least one oceanic plate. As the tectonic plates collide, one sinks below the other.
The San Andreas Fault - Chris Sattlberger / Cultura Exclusive / Getty Images
Transform Boundaries - When Earth's Plates Move Past Each Other
Transform boundaries or transform faults occur wherever the Earth's plates move past each other.
Different Types of Faulting - Encyclopaedia Britannica / Universal Images Group / Getty Images
Fault Types with Diagrams
Faulting can cause major earthquakes and create large mountain chains. Get a more in-depth look, with helpful diagrams, here.
An oceanic divergent boundary. - jack0m / DigitalVision Vectors / Getty Images
Divergent Boundaries: Where the Earth Splits Apart
Take a deeper look at how oceans and continents split apart and form new Earth at divergent boundaries.
Oceanic-oceanic convergent plate boundary. - Image by Wikimedia Commons user Domdomegg / licensed under CC-BY-4.0. Text labels added by Brooks Mitchell
What are Convergent Plates?
Convergent plate boundaries form the world's most intense volcanoes, deepest ocean trenches and highest mountains.
Snow covered mountains on the Antarctic Peninsula. - Michael Nolan / robertharding / Getty Images
Want to See What Antarctica Looks Like Beneath the Ice?
Although Antartica is almost entirely covered by glaciers, geologists are slowly beginning to understand what lies below the ice.
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