A satellite image showing snow, blue ice, and rocks in Antarctica.

Why are Most Meteorites Found in Antarctica?

Caitlin Dempsey

More meteorites have been found in Antarctica than all other continents combined. Why is that?

Rhyolite banding, Pinnacles National Park, 2014.

Geography of Igneous Rocks in the United States

Caitlin Dempsey

About 15% of the Earth's present land surface is made up of igneous rocks.

One source of uranium and radon in the Denver Basin aquifer system is sediments from the Pikes Peak granite, which have been weathering for millions of years.

Geology Quick Facts for Each U.S. State

Caitlin Dempsey

Listed here are the official state rock, gemstone, mineral, and fossil for each U.S. State.

Hoodoos at Bryce Canyon National Park. Photo: Bryce Canyon NPS, Public domain.

The World’s Highest Concentration of Hoodoos

Caitlin Dempsey

Hoodoos are tall, thin rock spires that occur all around the world.

Ground Movement in Norway

Caitlin Dempsey

Data from InSAR Norway has helped the  Geological Survey of Norway learn where there are areas of significant ground movement in both natural and urban areas of Norway.  

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